# transtekinc.com ## Posts - [LVDTs for High Temperature Applications](https://transtekinc.com/blog/lvdts-for-high-temperature-applications/): Linear Variable Differential Transformers (LVDTs) are well known for being versatile, and able to reliably function in many challenging environments. They withstand threats of vibration, pressure, corrosion, and more. Perhaps the most demanding challenge they face is extreme heat. Standard LVDTs simply can’t survive the heat, but their designs can be modified so they can deliver reliable position measurement. Why Do Standard LVDTs Fail in High Heat? So, why exactly are extreme temps a threat to LVDTs? While their housings are durable, it’s their internal winding assemblies that are vulnerable. When subjected to high heat, standard LVDT materials, such as epoxy […] - [Using LVDTs for Vibration Measurement](https://transtekinc.com/blog/using-lvdts-for-vibration-measurement/): Linear Variable Differential Transformers (LVDTs) are precision sensors well known for their reliability in position measurement applications. While they are not the first choice for typical vibration measurement uses, LVDTs do offer advantages for specific applications when certain conditions exist. Typically, these are ones where measurement of both movement and vibration is required. Today, we’ll look at a few examples where LVDTs have proven to be a good choice for vibration measurement. The LVDT Advantage We’ll admit it: accelerometers excel at measuring high-frequency vibrations. They are great for monitoring rotating components in predictive maintenance applications and similar uses. However, accelerometers might […] - [LVDTs vs Alternative Methods For Thickness Measurement](https://transtekinc.com/blog/lvdts-vs-alternative-methods-for-thickness-measurement/): For thickness measurement, manufacturers have a number of options: optical, capacitive, inductive, and contact-based methods. Each has its own strengths and drawbacks. The ideal choice depends on the demands of each use. Let’s see how LVDTs measure up when compared to some alternatives for a few interesting applications. Precision and Environmental Tolerance Generally speaking, LVDTs have been known for their precision and flexibility with relatively simple operations. They thrive in industrial environments where most measurement technologies can’t. Unlike optical systems that cannot perform well under dirty conditions or other extremely harsh settings, an LVDT often works best. Specific examples include the […] - [Comparing LVDT Technology with Alternatives for Hydraulic Actuation](https://transtekinc.com/blog/comparing-lvdt-technology-with-alternatives-for-hydraulic-actuation/): Position sensing plays a crucial role in ensuring precise control and reliable operation for hydraulic actuation. While Linear Variable Differential Transformers (LVDTs) are the go-to sensing solution, several competing technologies offer various advantages and trade-offs. Today we’ll explore the four main position sensing technologies used in hydraulic actuators: LVDTs, magnetostrictive sensors, Hall effect sensors, and resistive sensors. LVDTs: The Time-Tested Solution LVDTs remain one of the most popular choices particularly in aerospace and other mission- and safety-critical applications. This widespread adoption stems from several key advantages LVDTs offer including: However, LVDTs do have some limitations. They typically require more space compared […] - [LVDT Design Considerations for Pressure Vessel Applications](https://transtekinc.com/blog/lvdt-design-considerations-for-pressure-vessel-applications/): Many applications call for LVDTs to be mounted in a pressure vessel. Certain design considerations must be made so the LVDT can still perform well under higher pressures, or when there are subject to significant changes in PSI. While the highest amount of possible pressure is of key concern, other environmental and operating factors, such as temperature and magnetism, must be evaluated and planned for when specifying an LVDT. In a perfect world, all LVDT applications, including high-pressure ones, could be satisfied by a standard or slightly modified version. Due to the range of applications and environmental conditions, this is simply […] - [Linear Position Sensors Reference Guide](https://transtekinc.com/blog/linear-position-sensors-reference-guide/): Linear position sensors play a critical role in various consumer and industrial applications, quietly supporting functionalities from robotics and automation to electronics and automotive systems. Simply put, these devices convert physical movement into electrical signals, providing valuable position data for control, monitoring, and safety purposes.  There’s a diverse range of linear position sensor technologies on the market today, each offering advantages for specific applications. Selecting the ideal one depends on several factors including the required range, resolution, as well as the operating environment and budget. Today, we’ll explore the more common position sensor types and their typical uses: Linear Variable Differential […] - [What Are the Different Types of LVDTs?](https://transtekinc.com/blog/what-are-the-different-types-of-lvdts/): LVDTs are versatile, yet relatively simple devices that are used in a wide variety of applications and industries to measure displacement. They are precision inductive sensors that are built around a simple yet very efficient design. LVDTs are made up of three components: a primary coil, two secondary coils wound coaxially around it, and a movable ferromagnetic core. When an the primary coil is energized by voltage, it creates an electromagnetic field that the ferromagnetic core couples to the secondary coils. This coupling induces voltages in each secondary coil. The secondary coils are wired in series opposition, which means they produce […] - [Choosing the Right Signal Conditioner for Your LVDT](https://transtekinc.com/blog/choosing-the-right-signal-conditioner-for-your-lvdt/): Often, an LVDT installation will require a signal conditioner to convert, process or enhance the generated signals by the sensor. There are lots to choose from on the market, and they are offered with lots of features and options. As a result, we are often asked by customers how to determine which signal conditioner is best for their needs. What Purpose does the Signal Conditioner Serve? Before we get into selection, let’s take a minute to review why you would need a signal conditioner. The most popular reason is compatibility. LVDTs are AC devices. They operate off AC, and output AC. […] - [What’s Best for Your LVDT Needs: Standard, Modified, or Custom?](https://transtekinc.com/blog/whats-best-for-your-lvdt-needs-standard-modified-or-custom/): More and more, LVDT buyers find themselves faced with a choice: should they use a stock unit that doesn’t exactly meet their needs, then make accommodations on their end. Or the reverse, have the LVDT modified to meet their specs, thus simplifying production by making installation less complicated. Or in more extreme cases: go full custom. Let’s look at the options. Clearly, the ideal situation is if the application could use a standard configuration. Often, this is most cost effective. Also, standards tend to have much shorter lead times, as the units may be in stock. Or at least, all the […] - [Linear Velocity Transducers and Their Typical Uses](https://transtekinc.com/blog/linear-velocity-transducers-and-their-typical-uses/): A linear velocity transducer (LVT), simply referred to as a transducer, is used to measure dynamic velocity. It achieves this by converting velocity into a voltage output. It is a rather simple device that consists of a magnet that moves through a wire coil. In this case, velocity and voltage are in a synchronous relationship: as one increases, so does the other. The faster the magnet moves, the higher the resulting voltage. They do not require input power in order to function. As with many simple solutions, these devices can last a long time, often enduring decades of work. However, the […] - [The Use of LVDTs to Control Hydraulic Actuators](https://transtekinc.com/blog/the-use-of-lvdts-to-control-hydraulic-actuators/): Hydraulic actuators are used in a wide range of high-force applications including cranes, excavators, feeder/agitator drives, planes, military vehicles and more. In order to facilitate proper performance for many of these uses, it’s critical to constantly measure position and transmit accurate real-time data. LVDTs have proven to be a suitable, durable and relatively cost-effective way to achieve this. It’s interesting to note that in some cases, measurement by means of a sensor is not necessary. Hydraulics will simply just do their job. In other applications, such as heavy equipment, the operator may glance at the hydraulics, and use this visual feedback […] - [Applications for Gaging Linear Variable Displacement Transducers (LVDTs)](https://transtekinc.com/blog/applications-for-gaging-linear-variable-displacement-transducers-lvdts/): Gaging Linear Variable Displacement Transducers (LVDTs) are used to provide accurate linear displacement measurements for any application that requires a spring-loaded transducer. This alternative design and construction approach is required since a conventional free-unguided LVDT doesn’t always fit the bill. Specifically, they can’t be used where the moving object can’t support a direct connection to the core assembly of an LVDT. Gaging transducers, also known as spring-loaded LVDTs, rely on high-quality springs to perform accurate and consistent measurements, along with a shaft containment and guidance mechanism. The spring type will vary depending on the specific use, but fall into two general […] - [Exploring the Wide Range of LVDT Applications](https://transtekinc.com/blog/exploring-the-wide-range-of-lvdt-applications/): LVDTs are the unsung heroes of countless applications across an extensive range of industries. These include commercial, military, industrial, and consumer uses. Today, we’ll look at several specific applications to provide a visual representation how an LVDT is integrated into each. It’s certainly one of those cases where the pictures are worth a thousand words. Let’s take a look: Automotive/Transportation LVDTs are utilized through vehicles to measure things such as pedal travel, actuator displacement, and pressure regulation.     Parts Assembly – Using Vented LVDT Used on automation equipment to ensure proper alignment of parts prior to assembly. Suspension System – […] - [Five Questions For Procuring the Right LVDT for Your Application](https://transtekinc.com/blog/five-questions-for-procuring-the-right-lvdt-for-your-application/): LVDTs are used in a variety of applications and operating environments. There are several variables to consider when specifying one for your exact needs. Getting this right could mean make or break for the unit long term. To help guide you in your selection, we’ve boiled the process down to answering five key questions as follows:  How much do you need to measure with the LVDT In other words, what’s your required stroke length? Stroke length is determined by the dimensional range of what you are measuring. There’s a direct relationship between the measurement length and the length of the unit. […] - [Guide to Selecting the Right LVDT for High Pressure Applications](https://transtekinc.com/blog/guide-to-selecting-the-right-lvdt-for-high-pressure-applications/): For a majority of LVDT applications, standard units will fit the bill. However, certain operating environments have higher demands, requiring additional considerations and/or customization. Today, we’re focusing on various high pressure applications, and the how LVDTs can be configured to handle them.  Examples of High Pressure LVDT Uses Servo valves, drilling equipment and high pressure pumps are just a few high pressure applications that employ LVDTs. Intense pressure is a major threat, since it could potentially crush the transformer, or at least cause seal breaks, allowing water to enter. It gets into the wirings and windings and shorts the unit. It’s […] - [Should Your LVDT be AC or DC?](https://transtekinc.com/blog/should-your-lvdt-be-ac-or-dc/): All LVDTs, regardless if they are AC or DC, have an AC operated core. Historically, AC was a sufficient output for earlier controls and instruments. However, as technology evolves, the demand for DC units continues to increase. Ironically, there is a shift back to using AC due to the several benefits it offers. Today we’ll take a closer look at the technology, a bit of history, and get a better understanding of why AC may be back in fashion. Things Were Simpler Then Earlier controls and interfaces were less demanding than today’s hi-tech counterparts. There were no PLCs. Users were not […] - [How Do LVDT’s ‘Measure Up’ Against Competing Methods?](https://transtekinc.com/blog/how-do-lvdts-measure-up-against-competing-methods/): LVDT’s (linear variable differential transformers) were invented in 1936 by George B. Hoadley. They were developed as “…a system for the electrical transmission of intelligence at a distance”. These popular position sensors have evolved a bit since then. Today, they are used in a variety of industries from transportation and defense to commercial printing and power generation. LVDT’s are celebrated primarily for their accuracy and reliability. Though we do get questions occasionally on how they “measure up” against some of the more common alternative approaches to position sensing. These include linear potentiometers, magnetostrictive transducers, lasers and variable inductive transducers. So, which to […] - [How to Calibrate Your LVDTs](https://transtekinc.com/blog/how-to-calibrate-your-lvdts/): Calibration of your LVDT’s is critical to ensure that they are operating within the tolerances of precision and accuracy for which they are well known. That is why every sensor that leaves our factory is calibrated prior to shipping. Today we will detail the approach that we use, along with the information that is included with our reports. While other methods may vary a bit, we’ve found this one to be most accurate and effective. We hope you find this as a useful tool for guiding your own calibration efforts.  You start by establishing and recording the reference data. This process […] - [Choosing the Correct LVDT Frequency for Your Application](https://transtekinc.com/blog/choosing-the-correct-lvdt-frequency-for-your-application/): Linear variable differential transformers (LVDTs) are known to be extremely accurate devices for measuring linear distances. They are used in a variety of applications and industries to measure vibration, stress testing, actuator movement, and much more. However, it is important to note that maximum performance and accuracy are best achieved when an LVDT is excited at a particular frequency that is right for the application. What Effect Does the Frequency Have on Overall Performance? Interestingly, there are no set standards when it comes to frequency. It could be as little as 1, 3 kHz or higher, such as 5, 7, 10 […] - [Understanding Key Terminology for Sourcing LVDTs](https://transtekinc.com/blog/understanding-key-terminology-for-sourcing-lvdts/): Ever notice that every manufacturing field seems to have its very own language? It often includes words and phrases that are unique to their industry. Or, worse yet, common phrases that have entirely different definitions within their world. It’s a reality we can not change. In fact, the sensor industry is guilty of it! Though, when it comes to procurement, having a good understanding of the applicable terms will go a long way. Above all, it will help ensure that you are ordering exactly what the job calls for. Today, we’ll take a look at senor terminology. Let’s start with the […] ## Pages - [Home](https://transtekinc.com/): Series 240 DC-DC LVDT SensorsDesigned for Excellent Linearity, Infinite Resolution, and High SensitivityLearn MoreReverse EngineeringLet Us Reverse Engineer Your LVTDs, LVTs, and other Position SensorsLearn MoreCertified to ISO 9000 & AS9100We’re Committed to Quality and Excellence in Everything We DoLearn MoreMade in the USAProudly Crafted in the USA by Our Expert Technicians Learn MoreSame Day […] - [Privacy Policy](https://transtekinc.com/privacy-policy/): Last modified: September 1, 2026 Trans-Tek Incorporated respects your privacy and our site visitors’ information. We do not sell or rent to third parties any of the information collected via this website.  Information CollectedIf you request or submit information to us by sending an Email or by filling out a “contact” form, we may save […] - [Sitemap](https://transtekinc.com/sitemap/): Sitemap About Us A Few of Our Crew ISO Certified Sales Information Products AC-AC LVDTs DC-DC LVDTs Gaging LVDTs Angular Displacement Linear Velocity Oscillators/Demodulators DC Power Supplies LVDT Indicator LVDT Mounting Clamps Reverse Engineering Custom Design Made In The USA Blog Resources TekNotes LVDT TekNotes Gaging LVDT TekNotes ADT TekNotes LVT TekNotes How Our Sensors Work LVDT Technology ADT Technology LVT Technology Application Examples LVDT Applications Gaging Applications ADT Applications LVT Applications LVT Comparison Contact Us - [Terms of Use](https://transtekinc.com/terms-of-use/): Terms of Use Last updated: 9/1/2026 Please read these Terms of Use (“Terms”, “Terms of Use”) carefully before using the https://transtekinc.com website (“Service”) operated by Trans-Tek Incorporated. (“us”, “we”, or “our”). Your access to and use of the Service is conditioned on your acceptance of and compliance with these Terms. These Terms apply to all visitors, users and others who access or use the Service. By accessing or using the Service you agree to be bound by these Terms. If you disagree with any part of the terms then you may not access the Service. ContentThe content made available through https://transtekinc.com […] - [LVT TekNotes](https://transtekinc.com/resources/lvt-teknotes/): Common Linear Velocity Transducer (LVT) Technical Topics Below are technical topics commonly discussed with our LVT customers. Calibration Report Analysis All of our velocity transducers are inspected for conformance to published specifications. The output is logged on a strip chart recorder where the results are analyzed. The details of this analysis are broken down in this TekNote. Core Extension Rods The Series 100 LVTs come with a magnet and a coil. The magnet is tapped at each end for connection to a suitable extension rod. To attach the magnet to a moving object, an extension rod made of a non-magnetic, poor […] - [Request A Quote](https://transtekinc.com/request-a-quote/): Request A Quote TRANS-TEK, Inc.10 Industrial DriveP.O. Box 338Ellington, CT 06029 P: 860-872-8351F: 860-872-4211info@transtekinc.com Like Us on FacebookFollow Us on LinkedIn - [Blog](https://transtekinc.com/blog/) - [PC Board Drilling](https://transtekinc.com/application-examples/lvt-applications/pc-board-drilling/): Linear Velocity Sensing in a PC Board Drilling Machine According to Faraday’s Law, moving a magnet through a coil of wire will induce a voltage proportional to the magnet’s velocity and field strength. By using this principle of magnetic induction, with a permanent magnet and a fixed geometry, Trans-Tek Series 100 Linear Velocity Transducers (LVT) provide a simple yet accurate means of measuring linear velocity. The coil winding is divided into two sections, whereby the N (North) pole of the magnet induces a voltage in one coil and the S (South) pole induces a voltage in the other coil. With the […] - [Injection Molding Machine](https://transtekinc.com/application-examples/lvt-applications/injection-molding-machine/): Velocity Transducers Control Feed Rate A specific application using a Trans-Tek ADT involves an experiment conducted by the Department of Orthodontics at the University of Connecticut Health Center. The test is designed to measure uniplanar forces and moments delivered by orthodontic appliances. Two mounting chucks, each one coupled to a Series 600 ADT, are used to hold the appliance in place. The movable member of the chuck is restrained by a torque element so that angular displacement sensed by the transducer is proportional to the torque applied to the appliance. The data is then inputted into a PLC which controls displacements […] - [Shock Absorber Testing Machine](https://transtekinc.com/application-examples/lvt-applications/shock-absorber-testing-machine/): Velocity Transducer in Shock Absorber Testing Machine A leading maker of damper dynamometers has several lines of suspension testing machines that are used by automotive companies and OEM manufacturers to quickly and accurately characterize the performance of dampers (better known as shock absorbers in the US). With 500 systems installed worldwide, prominent customers include Ford, GM, Delphi Chassis, Lord Corp., and Harley Davidson. Numerous racing teams from NASCAR’s Winston Cup, Busch and Craftsman Truck Series are also common users. Data representing force, displacement, temperature and velocity is collected from several installed sensors on each machine. This information is fed into instrumentation […] - [Throttle Control](https://transtekinc.com/application-examples/adt-applications/throttle-control/): Angular Displacement Transducer Use In Throttle Control One prominent manufacturer of industrial engines for gas emissions pumping and electric power conversion takes advantage of the precise angular measurement of a Trans‑Tek ADT in throttle control. Installed in a large industrial engine, a Model 605 ADT provides angular position feedback of the throttle arm, which can move up to 90°. The throttle arm is then linked to an internal hydraulic actuator. As the throttle arm moves, the signal from the ADT is fed into a data acquisition system. Comparing the ADT output to a predefined table of voltage vs. engine RPM allows […] - [Orthodontic Fixtures](https://transtekinc.com/application-examples/adt-applications/orthodontic-fixtures/): Angular Displacement Transducer Use In Orthodontic Fixtures A specific application using a Trans-Tek ADT involves an experiment conducted by the Department of Orthodontics at the University of Connecticut Health Center. The test is designed to measure uniplanar forces and moments delivered by orthodontic appliances. Two mounting chucks, each one coupled to a Series 600 ADT, are used to hold the appliance in place. The movable member of the chuck is restrained by a torque element so that angular displacement sensed by the transducer is proportional to the torque applied to the appliance. The data is then inputted into a PLC which […] - [Flight Simulator](https://transtekinc.com/application-examples/adt-applications/flight-simulator/): Flight Simulator Control The Trans-Tek Model 0605 Angular Displacement Transducer (ADT) is an absolute, infinite-resolution rotary sensor based on a differential capacitive technology. Full supporting electronics allow for DC-in/DC-out operation while delivering a precise, stable output proportional to shaft angular displacement in working ranges to 300 degrees. The Model 0605 ADT was designed to provide a simple means of inputting angular position into analog systems. Internal voltage regulation along with a factory set full-scale output allows direct interchanging of units without the need for recalibration. Users can choose from several options including: displacement ranges, output signal, operating temperature range, splashproofing, and method of […] - [Butterfly Valve Control](https://transtekinc.com/butterfly-valve-control/): ADTs Keep Shuttle Level Before Launch The Trans-Tek Series 600 Angular Displacement Transducer (ADT) offers accurate angular position feedback for strokes to 120º. High precision is specified by non-linearities of ±0.05% and ±0.10% available for several working ranges. Discrete, integral electronics provide optimum performance, while delivering a high-level DC voltage output directly proportional to shaft rotation. The ADT design consists of a capacitive element coupled to a solid-state oscillator, a demodulator and an amplifier to yield DC-in/DC-out performance. Because of sophisticated signal conditioning electronics contained in the transducer package, the only equipment required for operation is a power supply (with fixed […] - [Road Profile Machine](https://transtekinc.com/application-examples/adt-applications/road-profile-machine/): Road Profiling with a Trans-tek ADT The Series 600 ADT is the most accurate device offered by Trans-Tek for angular displacement measurement. Accuracy for this unit is defined as ±0.05% or ±0.10% of full stroke over standard working ranges of 60° and 120°. All integral electronics and mechanical features are housed in a rugged package, suitable for operation in most harsh environments. For added protection, options such as Splashproofing and Vibration Control are also available. Taking full advantage of the Series 600 ADT is a well-known manufacturer of paving quality testers. This longstanding customer has incorporated the Model 0600-0000 and Model […] - [Keeping the Shuttle Level](https://transtekinc.com/application-examples/adt-applications/keeping-the-shuttle-level/): ADTs Keep Shuttle Level Before Launch With all that goes into launching the Shuttle, it’s easy to forget about the many preparations that proceed the actual flight. One of the more critical steps in this process is moving the spacecraft into place. This challenging task is accomplished using a massive Crawler/Transporter. Resting on top are the Mobile Launching Platform and the Shuttle, which are slowly carried from the Vehicle Assembly Building to the LaunchPad.   Working with a prime contractor to NASA, several of our Model 0605 ADTs will be incorporated into the Transporter’s leveling and steering systems. They are replacing […] - [Spiral Contractometer](https://transtekinc.com/application-examples/adt-applications/spiral-contractometer/): Series 600 ADT Helps to Detect Stress Our Series 600 ADTs offer high precision angular feedback – similar in performance to an absolute rotary encoder, but for considerably less cost. This advantage was discovered by a leading maker of quality control instruments. They have incorporated the Model 0603-0000-S-010302 (±60°, Lin. ±0.10%) into a newer version of their Spiral Contractometer, a device used to measure excessive plating stress that can cause blistering, distortion, and accelerated corrosion of base metal. The “S” configuration being used is the -010302: the “1” indicates an operating temperature range of +32 to +167°F, the “3” calls for […] - [Cylinder Head Testing](https://transtekinc.com/resources/gaging-applications/cylinder-head-testing/): Gaging Transducers Improve Cylinder Head Testing A gaging transducer, made from an LVDT with a captive, spring-loaded core assembly, offers a versatile means of position feedback. It provides accurate linear measurement and eliminates the need for a hard connection to the core extension rod. This type of transducer is particularly suited for material thickness measurement, machine control, automated testing and numerous other applications. The newest design of gaging transducer from Trans-Tek is the Series 330 3/8” AC-AC Gaging LVDT. This product line features advanced coil winding techniques employed to minimize overall length and carefully selected spring forces to ensure proper balance […] - [Synthetic Diamond Press](https://transtekinc.com/resources/gaging-applications/synthetic-diamond-press/): Gaging Transducer Use in a Synthetic Diamond Press The Series 350 DC-DC Gaging Transducers offer a convenient solution to position sensing with all supporting electronics located internally and packaged together with a durable spring-loaded spindle. Complete electronics provide DC-in/ DC-out operation while the spring actuation feature allows for minimal contact to the tip of the transducer. Similar to a customary LVDT with a free-floating core assembly, the movement of the spindle within the coil produces a voltage change in the output directly proportional to the displacement. One well known hydraulics company, a diversified manufacturing and engineering firm, has incorporated the Model […] - [Precision Gear Tester](https://transtekinc.com/resources/gaging-applications/precision-gear-tester/): AC LVDT: A Critical Part of Medical Device The Trans-Tek Models 0350-0010 and 0351-0006 DC-DC Gaging Transducers, found in the Series 350 family of LVDTs, offer an interesting alternative to the conventional spring-loaded LVDT. Each unit consists of full supporting electronics contained in a separate package wired six feet from the gaging mechanism. Isolating the electronics in this fashion leaves the gaging head with an excellent length to stroke ratio and only a 3/8” housing diameter, allowing for installation in tight areas. With strokes of ±.050” and ±.010” respectively, the Models 0350-0010 and 0351-0006 combine the size advantage of an AC […] - [Fuel Tank Expansion Testing](https://transtekinc.com/resources/gaging-applications/fuel-tank-expansion-testing/): Trans-Tek gaging transducers offer precision linear feedback in a spring-loaded package, often replacing the more common free-unguided LVDTs where the object being measured can not support a direct connection to the core assembly. The Series 310-320 AC-style gaging transducer covers long-stroke requirements ranging from ±0.25” to ±10.0”. Each model in this group uses the Series 210-220 LVDT as part of its construction. For example, the Model 0215-0000 is used to make the Model 0315-0000. As a result, the Series 310-320 features the same performance advantages as our AC-AC LVDTs: exceptional linearity, temperature coefficient, and resolution. The Series 310-320 is assembled using […] - [Dental Experiment](https://transtekinc.com/resources/gaging-applications/dental-experiment/): AC LVDT: A Critical Part of Medical Device The Dept. of Orthodontics at Yonsei University, Seoul, Korea, has developed a sophisticated test rig to perform in-depth dental experiments. The combination of this cutting edge hardware and innovative test procedures brings testing in this field to a new level. While previous setups used finite element methods or double exposure laser interferometry to make static measurements, this system, designed by Dr. Kwangchul Choy, monitors minute tooth movements noninvasively and in real-time. In designing this system for optimal results, it was important to establish multiple points of data collection. The unique configuration of the […] - [Keeping Mt. Rushmore Stable](https://transtekinc.com/resources/gaging-applications/keeping-mt-rushmore-stable/): DC Gaging LVDTs Monitor Stability of Mt. Rushmore Mount Rushmore is located in the Black Hills, near Keystone, SD. It is composed of granite characterized by bands of large crystals cutting through the mountain. In addition, numerous joints and fractures also intersect the mountain. Like most rock masses, Mount Rushmore can be viewed as a group of interconnected rock blocks. In 1989, a series of studies was conducted to assess the stability of the sculpture. Key block analyses revealed three “critical” rock blocks, meaning those portions of the rock mass more prone to movement. Although this sculpture has been stable for […] - [Hydraulic Cylinder Displacement](https://transtekinc.com/resources/lvdt-applications/hydraulic-cylinder-displacement/): LVDTs for Position Sensing in Hydraulic Cylinders Mounting the transducer external to the cylinder is the easiest implementation. In Figure 1, the LVDT is mounted via clamps or pillow blocks in parallel with the cylinder. The coils are fixed on the cylinder housing, and the core assembly is free to move with the piston rod, providing the displacement measurement. The alternative is to mount the LVDT directly inside the cylinder, under pressures of 3,000 to 5,000 PSI. To accommodate these high pressures, we can either seal the unit against the pressure, or vent the housing and equalize the pressure. Figure 2 […] - [Servo Valve Positioning](https://transtekinc.com/resources/lvdt-applications/servo-valve-positioning/): LVDT Use in Servo Valve Displacement Sensing There is a growing interest in the use of LVDT’s to provide position feedback for electrohydraulic proportional valves, a direct result of the enhanced performance that is realized when LVDT’s are utilized for process control. Mounted on the hydraulic valve, the LVDT contacts the spool to provide an electrical signal corresponding to spool position. The valve’s electronics compares this signal to the desired spool position. The result is a closed inner-loop system that continuously monitors and corrects the spool position. The benefits that are experienced from this application include increased frequency response and reduced […] - [Weighing Systems](https://transtekinc.com/resources/lvdt-applications/weighing-systems/): LVDT Use in Weighing Systems LVDT’s are frequently used to measure spring deformation in weighing systems and force measuring transducers (load cells). The displacement measurement and the characteristics of the spring (force/unit displacement) are used to calculate the applied force. A simple weighing system like the one illustrated below will consist of a weighing pan, displacement sensor, coil springs, and a base. Both the LVDT and springs are attached to the base, with the core assembly connected to the weighing pan. Alignment of the core assembly is precise enough to assure that no rubbing between the core and transducer ID takes […] - [Specific Gravity Sensor](https://transtekinc.com/resources/lvdt-applications/specific-gravity-sensor/): LVDT Use in Specific Gravity Sensors Engineers, as a means to create, often strive for the “least energy method” – or, in other words, the simplest way to accomplish a task. It is this concept that has led to the overwhelming popularity of the Trans-Tek DC-DC LVDT, represented by the Series 200 and Series 240. This accurate position feedback device is made convenient by complete signal conditioning electronics housed internally for DC-input/DC-output operation. The DC-DC LVDT, or DCDT, is an integrated package consisting of a precision LVDT, a solid state oscillator and a passive demodulator. Powered with a regulated DC voltage, […] - [Robotic Manipulator](https://transtekinc.com/resources/lvdt-applications/robotic-manipulator/): LVDT Use in Robotic Manipulator The Trans-Tek Series 240 DC-DC LVDT, available in strokes ranging from ±0.05” to ±3.0”, is an accurate position sensing transducer complete with internal supporting electronics. Driven by a regulated power supply between 6 and 30 VDC, this transducer provides a linear DC voltage output over its working range, with a standard ±0.5% maximum non-linearity of full stroke. A leading manufacturer of industrial manipulators has selected our Series 240 DC LVDTs for use in their product. These manipulators are used in severe-duty applications – where heat, dust, and vibration are the norm. These rugged, long-reach machines are […] - [Dollar Bill Thickness in ATM Machines](https://transtekinc.com/resources/lvdt-applications/dollar-bill-thickness-in-atm-machines/): LVDT Use in ATM to Sense Dollar Bills Miniature transducers, such as the Series 230 AC-AC LVDT, offer high accuracy linear measurement in a compact design. Packaged in a 3/8” diameter housing with excellent stroke to length ratio, these units are often utilized where size constraints prohibit the use of standard LVDT’s. In addition, the low-mass core is ideal for systems with low driving forces or high acceleration and, therefore, will not adversely influence the delicate nature of these applications. Operating ranges are available from ±0.005” to ±1.00”, divided into eight intermediate strokes. Despite their small size, the models from the […] - [Automotive Suspension System](https://transtekinc.com/resources/lvdt-applications/automotive-suspension-system/): LVDT Use in Automotive Suspension For OEM applications, AC-AC LVDT’s from the Series 270-280-290 provide cost-effective solutions for accurate position feedback. To fully support these transducers, only basic electronics are required, including one of several commercially available Integrated Chips or I/C’s. Combining an AC-AC LVDT with the necessary electrical components will result in a relatively low-cost system with high-end performance. AimRite Holdings Corporation is a pioneer in the field of computer-controlled suspension technology for the automotive industry. Targeting mainly sports utility vehicles (SUV), trucks, buses, and RV’s, AimRite’s trademark product – the COAST system – uses the Model 0283-0000 AC-AC LVDT […] - [Scanning Laser Tomography](https://transtekinc.com/resources/lvdt-applications/scanning-laser-tomography/): LVDT Use in a Scanning Laser Tomography Instrument At one time, everyone feared a glaucoma test when visiting the optometrist – squirming in your chair while waiting for that sudden puff of air. That is until Laser Diagnostic Technologies, San Diego, Calif. designed a scanning laser system that uses a near infrared diode laser instead of an airstream for imaging and measurement of retinal topography. The light probe is nearly undetectable by the patient and images are acquired through undilated pupils. The TopSS XL-2020 is a multiple purpose tomograph which offers several scan ranges and selectable placement of the image series. […] - [Bottle Height Inspection](https://transtekinc.com/resources/lvdt-applications/bottle-height-inspection/): LVDT Use in a Bottle Inspection Machine LVDT’s present a great opportunity to upgrade nearly any system already equipped with a finite position feedback device. When replacing an existing sensor such as a proximity switch, an LVDT can enhance the overall performance by providing continuous measurement feedback with infinite resolution. In addition, an entire series of proximity switches can be substituted with one LVDT, making this a cost effective change for the better. Retrofitting the LVDT as a replacement sensor is often easy to do, usually requiring simple re-fixturing and installation. Electronic compatibility is based on the type of replacement. To […] - [Octane Analyzer - LVDT Application](https://transtekinc.com/resources/lvdt-applications/octane-analyzer-lvdt-application/): LVDT Use in Octane Analyzer Seeking a precision sensor, a prominent manufacturer of engine test systems selected the Model 0216-00000 AC-AC LVDT and Model 1000-0012 O/D as a linear feedback system for their Octane Analyzer product line. This sophisticated analyzer is supplied to the energy and environmental sectors for the continuous monitoring of refinery, petrochemical and industrial processes. Its main task is to provide an accurate, cost effective means to determine octane numbers for various fuel mixtures. The Model 0216 was chosen over a competitor’s equivalent AC LVDT because of its excellent housing length to stroke ratio. The search for such […] - [Borehole Extensometer](https://transtekinc.com/resources/lvdt-applications/borehole-extensometer/): LVDT Use in a Borehole Extensometer A leading manufacturer of borehole extensometers currently uses several models from the Series 240 DC-DC LVDT for three different extensometer product lines. These devices accurately measure longitudinal or vertical displacements in rock masses and man-made boreholes. Typical applications include monitoring deformations around tunnels, mines and other underground excavations, settlement of structures, stability of natural and cut slopes and movement in dams and embankments. Occasionally, several extensometers are assembled in series to measure an extremely long deformation gradient. One extensometer in particular is designed for measuring longitudinal displacements in numerous types of boreholes. It is comprised […] - [Robotic Cleaner](https://transtekinc.com/resources/lvdt-applications/robotic-cleaner/): Liquid Level Sensing in a Hydraulic System Over the years, Trans-Tek has developed numerous variations on standard LVDT product lines. The Series 240 DC LVDT, being one of the highest volume sellers, probably contains the most modifications. One spin-off derived from specific customer requirements is a group of DCDTs which can be submersed in nonconductive, noncorrosive fluids at ambient pressure conditions. This style transducer is an interesting alternative, making exposure to this kind of medium possible. Although not commonly advertised, there are unique model numbers with the same working ranges as the regular Series 240: STD. SERIES 240 MOD. SERIES 240 […] - [Portable Friction Welder](https://transtekinc.com/resources/lvdt-applications/portable-friction-welder/): Compact AC LVDT Fits Design of Friction Welder Increasingly, there is the need to make things more compact. This is certainly the case in the design world, where making smaller products requires smaller components. In the field of linear position control, Trans-Tek addresses this issue with the Series 230 AC-AC LVDT. To achieve its miniature size, a special winding process is used resulting in an excellent length to stroke ratio for each model, while always maintaining a 3/8” outer diameter. Working ranges include: ±0.005”, ±0.010”, ±0.025”, ±0.050”, ±0.100”, ±0.250”,±0.500”, and ±1.000”. With the main emphasis on size, the Series 230 transducer […] - [Force Generation System](https://transtekinc.com/resources/lvdt-applications/force-generation-system/): DC-DC LVDT in Force Generation System This testing equipment manufacturer has been using our Series 240 DC-DC LVDTs for many years in their force generation systems. These sophisticated devices offer a wide range of force/torque capabilities geared for structural testing applications. Each system consists of an Exciter Head, Master Controller, and Hydraulic Power Supply. The Models 0243-00000 and 0244-00000 DCDTs are typically located in the Linear Exciter Head. Position feedback from the DCDT provides control of the test variables. Force transducers are also installed to measure force or torque for the structure being tested. Torsional and inertial mass Exciter Heads are […] - [Automation Assembly Equipment](https://transtekinc.com/resources/lvdt-applications/automation-assembly-equipment/): Miniature Gaging for Manufacturing Machinery Improvements Trans-Tek has addressed the ongoing need for precision linear feedback in a compact design with two transducer groups: the Series 230 and Series 330 AC-AC LVDT. Featuring a 3/8” diameter housing with excellent stroke to length ratio, these sensors are growing in popularity because of their superior measurement ability and miniature size. While having the same available working ranges and electrical parameters, the Series 230 and Series 330 differ only in their mechanical configurations. The Series 230 AC LVDT contains an ID hole through the center of the transducer’s coil form where a ferromagnetic core […] - [Product Inspection Machine](https://transtekinc.com/resources/lvdt-applications/product-inspection-machine/): Miniature LVDTs in Inspection Machines A prominent Japanese company has incorporated a few different units from our Series 230 3/8” AC LVDTs for in-house and OEM inspection machines. An example of these machines – used to perform final inspection of large flat-panel displays – is pictured below. They are mostly installed in their own production facilities, but are also sold as OEM systems to other manufacturers. The flat-panel displays eventually become PC and laptop monitors. Specific LVDTs that are featured include the Models 0230-000 (±0.005”), 0233-0000 (±0.050”), and to a greater extent the 0234-0000 (±0.100”). The displays are moved along on […] - [Replacing the “Fastar”](https://transtekinc.com/resources/lvdt-applications/replacing-the-fastar/): LVDTs in Place of Variable Inductors A builder of massive material testing systems called in search of a replacement position sensor for the discontinued Data Instruments “Fastar”. We were quick to respond with our Series 210-220 AC LVDTs. The “Fastar” transducer is actually a Precision Variable Inductor. Rather than have an LVDT’s primary winding, two secondary windings and an iron/nickel core, a Variable Inductor is constructed of a single coil of wire with an aluminum core. The unit is powered by a very high-frequency AC voltage – typically 112 kHz vs. the 3 or 7 kHz we specify for our AC […] - [“Brain Probing” Medical Device](https://transtekinc.com/resources/lvdt-applications/brain-probing-medical-device/): AC LVDT: A Critical Part of Medical Device Brain surgery is something nobody wants to go through, but is often necessary to treat symptoms of Parkinson’s and other neurological diseases. A medical products company has developed a sophisticated modular probe drive to support streamlined implantation of deep brain stimulating electrodes. This device addresses the clinician’s need for precise placement of electrodes for functional neurosurgery. At the heart of this system is our Model 0237-0003 AC-AC LVDT (±1.0” stroke). This transducer is a special version of our standard Model 0237, modified to withstand steam autoclaving – the sterilization process often required for […] - [Pill Making Machine](https://transtekinc.com/resources/lvdt-applications/pill-making-machine-lvdt-application/): AC-AC LVDT in Pill-Making Machine Trans-Tek’s involvement in the medical industry has been well documented in application notes and articles through the years. Another interesting story describing the use of our transducers in this field comes from an innovative company that designs and builds machine presses that fabricate medicine pills and tablets. This process is sometimes referred to as “tableting”. Through constant monitoring of several moving components, the Model 0216-0000 AC-AC LVDTs (±0.50” stroke) ensure that each pressed tablet is correctly made to a predetermined thickness and weight. Each LVDT is wired to a Model 1000-0012 O/D to facilitate DC-in/DC-out operation. […] - [Testing Soil Strength](https://transtekinc.com/resources/lvdt-applications/testing-soil-strength-lvdt-application/): DC LVDTs Assist in Testing Soil Strength A manufacturer of automated load testing equipment utilizes our LVDTs in their machines to help test soil strength. Windows-based software – featuring user-friendly graphical interfaces – gives these systems an ultramodern look. Among the many sensors used to profile the soil sample, a DC-DC LVDT from our Series 240 measures deformation of the sample under load; this customer chooses from the Models 0242, 0243 & 0244 to match the stroke requirement of the application. As seen in the photo, the LVDT is hard-mounted to the deformation bracket at the very top of the machine. […] - [Crankshaft Balancer](https://transtekinc.com/resources/lvdt-applications/crankshaft-balancer-lvdt-application/): Low-Cost AC LVDTs Keep Things in Balance The Series 280 AC-AC LVDTs represent our low-cost solution for linear position feedback. While this group provides the same stable readings and rugged construction as most LVDTs, other Trans-Tek AC lines offer better overall performance. For example, Linearity is specified as ±0.40% for the Series 280 and ±0.25% for the Series 210-220. This would suggest that the 210-220’s provide a much higher absolute accuracy and resolution than the 280’s. But don’t try telling that to this innovative system designer that has developed a cutting-edge automotive crankshaft balancer using our Model 0280-0000 (±0.050”) to monitor very small […] - [Linear Velocity Transducer Frequency Response](https://transtekinc.com/resources/lvt-teknotes/teknote-linear-velocity-transducer-frequency-response/): There is a direct relationship between the load impedance, DC resistance of the coils, and frequency response in the transducers. The DC resistance of the coils is given as “R” in the specifications. There are two frequency response values listed for specific load impedance levels: one at “10R” and the other at “100R”. If the load resistance falls between these two values, a linear relationship can be assumed. Load impedances above “100R” will improve the response rate up to a certain level, and then plateau. For load impedances below “10R”, however, there is a significant impact on the operation of the […] - [Linear Velocity Transducer Calibration Report](https://transtekinc.com/resources/lvt-teknotes/teknotes-linear-velocity-transducer-calibration-report/): The Trans-Tek Series 100 Linear Velocity Transducers produce a DC output voltage proportional to the velocity of the magnet relative to the coil. These units are designed and tested to assure that they conform to prescribed specifications. Each unit is calibrated by our QC Dept., and a strip chart recording of the results are packaged with each unit. The items used to conduct a typical calibration are: Strip Chart Recorder, High-Resolution DC Voltage Reference, Digital Volt Meter, and a proprietary Velocity Calibration Stand. The velocity stand provides a constant velocity, moving the magnet relative to the coil at typically 50 mm/sec. […] - [TekNotes | Mechanical Frequency Response of Gaging Transducers](https://transtekinc.com/teknotes-mechanical-frequency-response-of-gaging-transducers/): Linear Velocity Sensing in a PC Board Drilling Machine Trans-Tek has 3 different series of spring-loaded LVDTs: Series 310-320 Long Stroke AC Gaging, Series 330 3/8” AC Gaging, and the Series 350 DC-DC Gaging. These transducers are normally supplied in a spring extended configuration, requiring a force on the tip to displace the shaft. Many times, we are asked to identify the frequency response of the transducer, to insure that the sensor will track the movement of the object being measured. In a standard LVDT, the frequency response is an electrical characteristic only, determined by the signal conditioning circuitry. In a […] - [Velocity Transducer Improves Pipette Puller Design](https://transtekinc.com/application-examples/lvt-applications/latest-applications-velocity-transducer-improves-pipette-puller-design/): Trans-Tek Series 100 Linear Velocity Transducers are based on the principle of magnetic induction and provide accurate velocity measurement in a linear motion. Passing a magnet through the coil form generates a voltage proportional to the magnet’s velocity and field strength. This output signal is used to carefully monitor the speed of moving components in numerous applications. A renowned laboratory instrument manufacturer has incorporated the Trans-Tek Model 0100-0009 LVT (a slightly modified version of the standard Model 0100-0000) for velocity feedback in their micropipette puller, a device used for the fabrication of micropipettes, patch pipettes and microinjection needles. Taking advantage of […] - [Synchronous vs. Asynchronous Demodulation](https://transtekinc.com/resources/lvdt-teknotes/teknote-synchronous-vs-asynchronous-demodulation/): The Trans-Tek Series 1000 Oscillator/Demodulators are designed to provide a user-friendly DC-in/DC-out interface with an AC LVDT. These units are designed to be powered by a wide range of DC voltages, which power a precision oscillator. The AC voltage generated is the excitation voltage for the primary coil of an AC LVDT. The AC voltages from the LVDT’s secondary coils are demodulated (ideally rectified), differenced, and filtered into a usable DC output voltage. Trans-Tek uses an Asynchronous rather than classical Synchronous demodulation for best performance and user convenience. A comparison is made below Synchronous Demodulation Traditional Synchronous demodulation (i.e. oscillator-synchronous) takes […] - [Passive Signal Conditioning For DC LVDTs](https://transtekinc.com/resources/lvdt-teknotes/teknote-passive-signal-conditioning-for-dc-lvdts/): The DC input, DC output LVDT is an AC LVDT with an integral oscillator/demodulator, providing a compact and cost-effective means of sensing displacement. The following explains how to create simple, passive signal conditioning circuits to scale, offset, and allow fine adjustment of zero for a standard, bipolar LVDT. Power Supply DC-DC LVDTs are designed to be excited by a regulated DC power supply. The transducer’s output will track any change in the excitation voltage. As a general recommendation, power supply line and load regulations should be better than 0.1%. However, the power supply stability should be consistent with the system accuracy […] - [LVDT Operation in a Vacuum](https://transtekinc.com/resources/lvdt-teknotes/teknote-lvdt-operation-in-a-vacuum/): Operating an LVDT in an evacuated environment requires some special considerations. Through packaging variations or mounting considerations, the integrity of our standard LVDT’s characteristics can be preserved. In order to select the most appropriate version, the differences between operation in a normal environment and a vacuum must be understood. Heat Dissipation Under normal atmospheric pressure, the majority of the heat generated by the LVDT is dissipated through convection and conduction. In a vacuum, the lack of atmosphere prevents cooling through convection. The device will still conduct thermal energy to objects in contact with it but they have to in turn dissipate […] - [Core Extension Rods](https://transtekinc.com/resources/lvdt-teknotes/teknote-core-extension-rods/): Introduction Inductive sensors such as LVDTs and Linear Velocity Transducers (LVTs) are composed of two major parts: the coils and the core. For LVDTs, the movement of the core relative to the coils produces a change in the flux linkage between the primary and secondaries, resulting in a change in output voltage proportional to the displacement. In LVTs, the movement of the magnet through the coils results in a DC voltage output proportional to the velocity. In both cases, a connection is required between the core and the object being monitored – this is typically done using an extension rod. Extension […] - [Connector And Cable Assemblies](https://transtekinc.com/resources/lvdt-teknotes/teknote-connector-and-cable-assemblies/):  Many Trans-Tek transducers incorporate connectors as their standard method of electrical interface. In other instances, users need to install an in-line connector on a unit that normally terminates in a cable or individual lead wires. To aid in selecting the proper connectors and/or cable assemblies, the diagram to the right illustrates the various options available for many of our transducers.  The listed part numbers refer to complete assemblies, which include all required shells, strain reliefs, and cable bushings. Unless otherwise specified, all of the cables shown are supplied in 15’ lengths. Model 1003 Mating Connectors The Model 1003 Transducer Indicator uses […] - [Angular & Linear Transducer Calibration Method Report](https://transtekinc.com/resources/lvdt-teknotes/angular-linear-transducer-calibration-method-report/): Trans‑Tek calibrates 100% of its transducers before shipment. Linear Velocity transducers come with a strip chart recording of the output which details important parameters such as sensitivity and stroke length. All Linear and Angular Displacement Transducers come with a computer-generated calibration report. In this calibration report, we list measured and calculated parameters such as sensitivity, calibration input voltage, and non-linearity. To calculate non-linearity, we must compare the actual data against a theoretical ideal. Trans‑Tek uses three methods to calculate the ideal comparison line: Zero Base – Average Terminal, Best Fit Straight Line, and Best Fit Straight Line Through Zero. Each calculation […] - [ISO Certified](https://transtekinc.com/about-us/iso-certified/): AS9100 & ISO9000 Certified Business The global sensor manufacturer, Trans-Tek, received two key industry certifications: the ISO 9000 certification for quality management and the AS9100 quality certification for the aerospace industry. The company earned these internationally recognized distinctions following a lengthy and extensive audit of its business practices to ensure they meet demanding standards in quality, productivity, consistency and traceability. In addition to providing marketplace assurances, businesses that meet and maintain ISO standards are better able to manage costs through improved systems and processes, increase customer satisfaction, access new markets, and reduce environmental impact.AS9100 is based on the ISO 9000 quality […] - [A Few of Our Crew](https://transtekinc.com/about-us/a-few-of-our-crew/): A Few of Our Crew Name: Kevin Conlin Position: Director Sales & Marketing Years at the Company: 4 years Favorite aspect of working at Trans-Tek: I love that because we’re a small manufacturer, I get to be involved in so many aspects of the business, and, as a bonus, we have a great group of people working together here. Summary of your role: Responsible for the marketing and sales of our sensing and control products worldwide. Name: Alan J. Amoro Position: Machinist Years at the Company: 9 years Favorite aspect of working at Trans-Tek: Having the pleasure of working with my […] - [Sales Information](https://transtekinc.com/about-us/sales-information/): LVT, ADT & LVDT Sales Information WARRANTY PERIOD Trans-Tek’s Standard Warranty for the initial sale of Goods is for a period of twelve (12) months from date of shipment. Trans-Tek does offer Extended Warranty Periods – for as long as four (4) years from the date of Shipment – for our LVDT, LVT and ADT Products. We will be happy to price Extended Warranty Coverage (in 6 month increments) with Quotes for new Equipment. CALIBRATION VERTIFICATION SERVICES For new LVDT, LVT and ADT coming out of the factory, Trans-Tek can provide NIST Traceable Calibration upon request for a small fee. Also, […] - [Careers](https://transtekinc.com/careers/): We have no openings at this time. Please check back again soon. TRANS-TEK, INCHuman ResourcesP.O. Box 338 Ellington, CT 06029Fax 860-872-4438 Apply Today on Indeed.com! - [ADT Applications](https://transtekinc.com/application-examples/adt-applications/): Angular Displacement Transducer (ADT) Applications & Uses ADTs are used in a wide variety of applications. Several of the more common methods of use have been documented in detailed articles. Spiral Contractometer  This specially designer ADT – with lower starting torque – minimizes friction and backlash.Series 600 Keeping the Shuttle Level NASA has a lot riding on our ADTs…Series 605 Road Profile Machine Large asphalt level tester uses ADT to retrieve data on smoothness of new road construction.Series 600 Butterfly Valve Control Large gate valves used to control waste gas from a power generation plant rely on the excellent repeatability offered […] - [Gaging Applications](https://transtekinc.com/resources/gaging-applications/): Gaging LVDT Applications & Uses Gaging (spring-loaded) LVDTs are used in a wide variety of applications. Several of the more common methods of use have been documented in detailed articles. Keeping Mt. Rushmore Stable  A modified version of a DC Gaging unit withstands harsh conditions while monitoring this rock mass. Series 350 Dental Experiment Multiple small package DC Gagings fit around tooth for testing under applied forces. Series 350 Fuel Tank Expansion Testing Long-stroke transducers assist auto manufacturer in testing stress points on fuel tanks. Series 310-320 Automation Assembly Equipment These assembly systems increase production efficiencies and use our LVDTs for […] - [LVDT Applications](https://transtekinc.com/resources/lvdt-applications/): LVDT Applications & Uses LVDTs are used in a wide variety of applications. Several of the more common methods of use have been documented in detailed articles. Crankshaft Balancer Low-cost LVDT, with refined signal conditioning, resolves to a millionth of an inch for this automotive crankshaft balancer. Series 280 Testing Soil Strength DCDT measures soil sample deformation under load to determine soil strength. Series 240 Pill Making Machine In making tablets from medicinal powder, dual LVDTs control pill weight & thickness. Series 210 “Brain Probing” Medical Device Special AC LVDT is critical part of this medical instrument that assists with brain […] - [LVT Comparison](https://transtekinc.com/resources/lvt-comparison/): Linear Velocity Transducer Competitor Comparison Linear Velocity Transducer Comparison – between Lucas-Varity CSP (Schaevitz) and Trans-Tek Resistance Inductance Coil Mass (grams)  Magnet Mass (grams) Stroke (inches) Schaevitz  TransTek Schaevitz TransTek Schaevitz TransTek Schaevitz TransTek Schaevitz TransTek  0.5  3L5-VT-Z  0100-0000  4000  2000  0.3  0.085  20  20  4  3.5  0.5 cunife  0100-0001  2.5  1.0  3L1-VT-Z  0101-0000  5000  2500  0.2 0.065  25  25 4 4.5  1.0  cunife 0101-0001  3.8  1.0  6L1-VT-Z  0111-0000  20000 13000  5  1.6  78 110 11 11  1.0  cunife 0111-0001  10  2.0  6L2-VT-Z  0112-0000  15000  19000  3.7  2.9 120 150 14 15  2.0  cunife 0112-0001  14  3.0  6L3-VT-Z  0113-0000  26000 25000 6.5 […] - [LVT Technology](https://transtekinc.com/resources/lvt-technology/): Linear Velocity Transducer (LVT) Technology Trans-Tek manufactures and designs Linear Velocity Transducers using inductive technology. Moving a magnet through a coil of wire will induce a voltage in the coil according to Faraday’s and Lenz’ Laws. This voltage is proportional to the magnet’s velocity and field strength. TRANS-TEK LVTs use this principle of magnetic induction, with a permanent magnet and a fixed geometry coil, so the output voltage of the coil is directly proportional to the magnet’s relative velocity over its working range. During operation in the working range of the transducer, both ends of the magnet are inside the coil. […] - [ADT Technology](https://transtekinc.com/resources/adt-technology/): Angular Displacement Transducer (ADT) Technology Trans-Tek designs and manufactures a complete line of Angular Displacement Transducers (ADTs) using capacitive technology. The ADT consists of a differential capacitor with a movable rotor, a shaft mounted in precision ball bearings, and signal conditioning electronics for DC in – DC out operation. The capacitive sensor within the transducer consists of 3 parts: a transmitting electrode, a grounded rotor, and a receiving board containing 2 or 4 separate electrodes. Differencing the capacitance between the receiving electrodes yields an output that is proportional to angular displacement. The exploded view above for the Series 600 transducers shows […] - [LVDT Technology](https://transtekinc.com/resources/lvdt-technology/): What is An LVDT? An LVDT, or linear variable differential transformer, is a type of electrical transformer used to measure linear displacement (or position). They are also known as LVDT sensors. An LVDT consists of a primary coil, a movable core, and two secondary coils. The primary coil is connected to an alternating current (AC) power source, and the secondary coils are connected to a measurement device such as a bridge circuit. As the core moves in or out of the transformer, the relative inductance between the primary coil and each secondary coil changes, causing a change in the output voltage […] - [ADT TekNotes](https://transtekinc.com/resources/adt-teknotes/): Common Angular Displacement Transducer (ADT) Technical Topics Below are technical topics commonly discussed with our ADT customers. Cable and Connector Assemblies The Series 600 and 605 both terminate in an MS style connector. A mating connector is provided with all new units. In instances where a cable assembly or replacement connector is required, part numbers can be found in this TekNote. Calculation Methods for Ideal Straight Line Non-Linearity Comparison Each transducer is calibrated and supplied with a calibration report describing important product details such as non-linearity. Non-linearity is calculated by comparing actual data against ideal data. Calculation methods for the ideal […] - [Gaging LVDT TekNotes](https://transtekinc.com/resources/gaging-lvdt-teknotes/): Common Gaging LVDT Technical Topics Below are technical topics commonly discussed with our LVDT customers. Cable and Connector Assemblies The Series 310-320 and 350 Gaging LVDTs both terminate in an MS style connector. Mating connectors and assemblies are sold separately.  In instances where a connector or cable assembly is required, part numbers can be found in this TekNote. Calculation Methods for Ideal Straight Line Non-Linearity Comparison Each transducer is calibrated and supplied with a calibration report describing important product details such as non-linearity. Non-linearity is calculated by comparing actual data against ideal data. Calculation methods for the ideal data include Best […] - [LVDT TekNotes](https://transtekinc.com/resources/lvdt-teknotes/): Common LVDT Technical Topics Below are technical topics commonly discussed with our LVDT customers. Cable and Connector Assemblies The Series 310-320 and 350 Gaging LVDTs both terminate in an MS style connector. Mating connectors and assemblies are sold separately. In instances where a connector or cable assembly is required, part numbers can be found in this TekNote. Calculation Methods for Ideal Straight Line Non-Linearity Comparison Each transducer is calibrated and supplied with a calibration report describing important product details such as non-linearity. Non-linearity is calculated by comparing actual data against ideal data. Calculation methods for the ideal data include Best Fit […] - [Application Examples](https://transtekinc.com/application-examples/): Latest ADT, LVT, Gaging & LVDT Applications Transducer applications are wide ranging. Our LVDTs, ADTs (angular) and LVTs (velocity) are seemingly everywhere… from unique projects such as monitoring the structural stability of Mt. Rushmore to the levelness of the Space Shuttle Crawler… to more general areas such as hydraulic cylinder feedback, actuator control or structural testing. We’ve helped countless companies get the job done! Below are direct links to numerous application articles, categorized by main product line. LVDT Applications Gaging Applications ADT Applications LVT Applications - [Resources](https://transtekinc.com/resources/): TekNotes LVDT TekNotes Gaging LVDT TekNotes ADT TekNotes LVT TekNotes How Our Sensors Work LVDT Technology ADT Technology LVT Technology Application Examples LVDT Applications Gaging Applications ADT Applications LVT Applications LVT Competitive Comparison See how our standard LVT models compare to Lucas-Varity CSP (Schaevitz) LVTs LVT Comparison - [International](https://transtekinc.com/international/) - [Contact Us](https://transtekinc.com/contact-us/): Contact Us Please use this form to reach out to us with any general/product info requests. If you are looking for a quote, please click here for our RFQ form. We look forward to hearing from you! Thank you. TRANS-TEK, Inc.10 Industrial DriveP.O. Box 338Ellington, CT 06029 P: 860-872-8351F: 860-872-4211info@transtekinc.com Like Us on FacebookFollow Us on LinkedIn - [About Us](https://transtekinc.com/about-us/): About Trans-Tek, Inc. Linear & Angular Displacement, Velocity Transducers For over half a century, Trans-Tek, Inc. has been providing the very best Linear and Angular Displacement and Linear Velocity Transducers in the business. Our main focus is Linear Sensors, which are based on LVDT (Linear Variable Differential Transformer) technology. When it comes to solving your measurement problems, our engineers, with their extensive experience, will find the right position or velocity sensor to meet your most demanding requirements. Our complete production facility is geared to meet your delivery needs – whether it’s for a standard or custom sensor solutions. Our LVDT Research & Development (R&D) program is continuously […] - [Custom Design](https://transtekinc.com/capabilities/custom-design/): Custom Design Are you having trouble finding the right LVDT or other sensing product you need? Head over to our contact us page and tell us about your needs. We can take your most strict requirements and custom design and manufacture a product that will work for you.  From big to small we can design them all! - [Reverse Engineering](https://transtekinc.com/capabilities/reverse-engineering/): Reverse Engineering Position Sensors Orphaned or Outpriced? Let us reverse-engineer your irreplaceable LVT’s, LVDT’s and other position sensors: When your current source for position sensors goes out of business (GL Collins LVDT’s), no longer offers a particular design (Schaevitz LVTs; MTS LVDT’s), raises prices, or, you just don’t have adequate documentation or specifications to quote another source, Trans-Tek engineers are poised to help: We’ll work with you to reverse engineer an original design, or evaluate your application for an even better sensor with improved performance. We currently design and manufacture a range of inductive sensors, whether linear, velocity or rotary. Our […] - [LVDT Mounting Clamps](https://transtekinc.com/products/lvdt-mounting-clamps/): LVDT Mounting Clamps STST300 Series Mounting Clamps offer ease of installation by presenting a flat surface instead of the curved shape of the transducer itself. Each clamp includes two mounting screws. Specifications > Download Spec Sheet (PDF) - [LVDT Indicator](https://transtekinc.com/products/lvdt-indicator/): Model 1003 LVDT Transducer Indicator Panel Mount Indicator 4 Independent Setpoints Supports AC and DC Transducers Splashproof Front Panel Calibrating the unit is accomplished via membrane switches on the front panel, eliminating the need for internal trim pot adjustment. The user can calibrate the unit by simply entering the full scale endpoints, the zero position, and decimal point location. This allows a readout in inches, degrees, or other engineering units corresponding to the application. During the calibration, there are 6 user defined setpoints: two high, two low, and the high and low hysteresis points for the system. When the specified tolerances […] - [DC Power Supplies](https://transtekinc.com/products/dual-dc-power-supply/): Series D100 ​ Dual DC Power Supply Compatible with DC LVDTs and ADTs Compact Package High Regulation Short Circuit Protected The Series D100 power supplies are regulated, preset voltage sources, ideally suited for DC excited transducers, discrete and IC function modules. All components are encapsulated to provide reliable continuous operation to rated specifications in laboratory and factory environments. They are equipped with an on-off switch, line cord, binding post terminals, rubber feet and a #4-40 tapped hole located on the bottom side for permanent mounting. The hole is connected to earth ground via the power line cord ground terminal. Dual voltage […] - [Series P010](https://transtekinc.com/products/oscillators-demodulators/series-p010/): Series P010 OEM Oscillator/Demodulator Works with 5 and 6 wire LVDTs Internally Regulated DC Voltage Output Small Size and Low Cost The Series P010 Oscillator/Demodulator PC Boards are the ideal AC LVDT interface for OEM applications. The compact circuit board design includes an ASIC for the oscillation/demodulation function, with peripheral components included for voltage regulation, output scaling and filtering. The synchronous demodulator converts the AC voltages from the secondary coils to a DC voltage, where the output is amplified and filtered. A standardized ±5 VDC output signal is adjustable by manipulating an integral trim pot and can be used as an […] - [Series ED](https://transtekinc.com/products/oscillators-demodulators/series-ed/): Series ED Oscillator/Demodulator Works with 5 and 6 wire LVDTs Internally Regulated DC Voltage Output Small Size and Low Cost The Series ED Oscillator/Demodulator is designed to simplify installation for 35mm DIN Rail and Panel Mount applications. It provides DC-in/DC-out operation for AC LVDTs and is internally regulated for additional stability of the output signal. Optimized for 3 kHz or 7kHz performance. A variety of voltage outputs are available as well as 4-20 mA; all with zero offset and span adjustment. > Download Spec Sheet (PDF) Specifications * Oscillator output voltage adjusted via span adjustment potentiometer.* Oscillator output current operates into […] - [Series 1000](https://transtekinc.com/products/oscillators-demodulators/series-1000/): Series 1000 Oscillator/Demodulator Works with 5 and 6 wire LVDTs Internally Regulated DC Voltage or 4-20 mA Output High Frequency Response The Series 1000 Oscillator/Demodulators provide complete electrical support for AC LVDTs. Working from an unregulated DC input, the modules generate a stable sinusoidal excitation voltage for the transducer. The LVDT’s secondary voltages are converted into DC voltage by the module’s phase sensitive demodulator. The demodulator has automatic phase synchronization which simplifies installation and setup by eliminating the need to make phase angle adjustments for each transducer. An active, three-pole filter in the final stage reduces output ripple while maximizing frequency […] - [Oscillators/Demodulators](https://transtekinc.com/products/oscillators-demodulators/): Oscillators/Demodulators Series 1000 Voltage and Current outputs available Dual DC Supply required > View Details Series ED Variety of Voltage outputs or Current output available DIN rail mount Operates off 22-30V DC single end supply > View Details Series P010 Small size for OEM integration Voltage output Dual DC Supply required > View Details - [Linear Velocity](https://transtekinc.com/products/linear-velocity-transducer/): Series 100 Linear Velocity Transducers Self-Generating DC Voltage Output Magnetically Shielded High Sensitivity High Frequency Response The Series 100 Linear Velocity Transducers provide a simple yet accurate means of measuring linear velocity. They consist of high coercive force permanent magnet cores which induce sizable DC voltage while moving concentrically within shielded coils. The basic design permits operation without external excitation while the generated output voltage varies linearly with core (magnet) velocity. These transducers are ideal for seismology, hydraulic ram speed, drilling rate, and any other application where an instantaneous velocity measurement is required. > Download Spec Sheet (PDF) Electrical Specifications * […] - [Series 607](https://transtekinc.com/products/angular-displacement/series-607/): Series 607 360° Precision Feedback and Display Displays Full 360˚ Working range Speeds to 3,000 RPM Binary-Coded-Decimal (BCD) Output USB Output 0.05˚ Accuracy and 0.05˚ Resolution Analog +/-5 VDC Output The Model 0607-0002 Optical Encoder and Model 1005-0000 Counter Display system provide precision feedback and readout of shaft angular displacement over the full 360° revolution. From a fixed or user settable point, angular position is displayed in degrees over indefinite shaft revolutions at speeds up to 3000 RPM, with equivalent BCD output, USB output and analog output. In simplest mode, Encoder position is displayed in increments of 0.05° over the range […] - [Series 605](https://transtekinc.com/products/angular-displacement/series-605/): Series 605 High Accuracy ADTs Ranges from 12º to 300º DC Voltage/4-20 mA Output Non-linearity < 0.25% 3 KHz Frequency Response The Model 0605 is an absolute rotary position transducer based upon differential capacitance. It has been designed to provide a simple means of inputting angular position into analog or digital systems. Internal voltage regulation along with a factory set full scale output allows the direct interchanging of units without system recalibration. The Model 0605 allows great flexibility in supporting individual customer’s requirements. With eight different full scale ranges from 12° to 300°, five different outputs, termination choices, and other options, […] - [Series 600](https://transtekinc.com/products/angular-displacement/series-600/): Series 600 High Accuracy ADTs Ranges from ±30º to ±60º DC Voltage Operation Non-linearity < 0.05% Absolute Measurement The Series 600 Angular Displacement Transducers (ADT’s) are precision differential capacitors. These transducers do not have the edge effects and dimensional instability characteristic of traditional capacitive devices. The sensing element is coupled to a solid-state oscillator, demodulator, and amplifier to yield DC input – DC output performance. These transducers deliver a high-level analog DC voltage directly proportional to shaft angular displacement with a high degree of conformity. Rotation is continuous and there is no reactive torque. Reliable performance is assured by the absence […] - [Angular Displacement](https://transtekinc.com/products/angular-displacement/): Angular Displacement Transducers Series 600 Precision Differential Capacitance based angular position Rugged construction; long life High temperature; high-speed options > View Details Series 605 Small size 3/8″ diameter Strokes from 0.01″ to 6.0″ High Temp & High Pressure available > View Details Series 607 Small size 3/8″ diameter Strokes from 0.01″ to 6.0″ High Temp & High Pressure available > View Details - [Series 350](https://transtekinc.com/products/gaging-lvdts/series-350/): Series 350 General Purpose DC Gaging LVDTs Ranges from ±0.05” to ±3.0” 6 to 28 VDC Excitation Non-linearity < 0.5% High Sensitivity The Series 350 DC Gaging Transducers are an integrated package consisting of a spring-loaded spindle, precision linear variable differential transformer, a solid state oscillator, and a phase-sensitive demodulator. The transducer is designed for excellent linearity, infinite resolution, and high sensitivity. Input and output circuits are electrically isolated from each other and from the coil assembly housing, making them usable directly in floating or ground return systems. DC indicators, recorders, and control systems can usually be driven directly by the […] - [Series 330](https://transtekinc.com/products/gaging-lvdts/series-330/): Series 330 3/8 Inch AC Gaging LVDTs Ranges from ±0.005” to ±1.0” Self-Lubricating Bearing Non-linearity ≤ 0.20% 20 MicroInch Repeatability The Series 330 3/8″ AC Gaging LVDTs provide precise linear displacement sensing in a compact, spring-loaded package. Advanced coil winding techniques are employed to minimize package length and optimize overall performance. Spring forces have been carefully selected to insure the proper balance of mechanical frequency response and tip force. Available in strokes ranging from ± 0.005″ to ± 1.0″, these sensors are ideally suited to material thickness measurements, single or multi-point surface profiling, creep testing, or any other application requiring the […] - [Series 310-320](https://transtekinc.com/products/gaging-lvdts/series-310-320/): Series 310-320 Long Stroke AC Gaging LVDTs Ranges from ±0.25” to ±10.0” Reversible Spring Option Non-linearity ≤0.25% Stainless Steel Construction The Series 310-320 Long Stroke AC Gaging Transducers consist of a precision AC LVDT, a rugged stainless steel outer housing, and a spring actuated, stainless steel shaft. Consistent with the high performance normally found in Trans-Tek precision AC LVDTs, these transducers exhibit excellent non-linearity and extremely low temperature coefficients. Available in full stroke displacements of 0.5 to 20 inches, the transducers are ideal for use in single or multi-point gaging systems, thickness measurements, machine control, or any other applications requiring a precision, spring actuated […] - [Gaging LVDTs](https://transtekinc.com/products/gaging-lvdts/): Gaging LVDTS Trans-Tek’s Gaging LVDTs provide accurate linear displacement measurements in applications requiring a spring loaded transducer. Gaging transducers should be used in place of conventional free-unguided LVDTs whenever the moving object can not support a direct connection to the core assembly of an LVDT. Common applications include thickness measurements, machine control, surface profiling. or any other application where precision measurement is required. Our gaging transducers are available in either AC or DC, and in different sizes. We can also customize the LVDT to your specific requirements. Not sure which is best for your needs? Contact our application engineering team for […] - [Series 240](https://transtekinc.com/products/dc-dc-lvdts/series-240/): Series 240 General Purpose DC LVDTs Ranges from ±0.05” to ±4.0” 6 to 30 VDC Excitation Non-linearity < 0.5% Stainless Steel Construction The Series 200 DC-DC LVDTs are precision Linear Variable Differential Transformers packaged with a solid state oscillator and a phase sensitive demodulator. The transducer is designed to work with DC voltages, and has excellent linearity, infinite resolution, and high sensitivity. Input and output circuits are electrically isolated from each other and from the coil assembly housing, making them usable directly in floating or ground return systems. DC indicators, recorders, and control systems can usually be driven directly by the […] - [Series 200](https://transtekinc.com/products/dc-dc-lvdts/series-200/): Series 200 Short Stroke DC LVDTs Ranges from ±0.05” to 0.20” High Sensitivity Non-linearity < 0.5%, 0.3% Stainless Steel Construction The Series 200 DC-DC LVDTs are precision Linear Variable Differential Transformers packaged with a solid state oscillator and a phase sensitive demodulator. The transducer is designed to work with DC voltages, and has excellent linearity, infinite resolution, and high sensitivity. Input and output circuits are electrically isolated from each other and from the coil assembly housing, making them usable directly in floating or ground return systems. DC indicators, recorders, and control systems can usually be driven directly by the large DC […] - [DC-DC LVDTs](https://transtekinc.com/products/dc-dc-lvdts/): DC-DC LVDTs Trans-Tek manufacturers DC-DC LVDTs, specifically designed to work with DC currents. Our 240 Series is intended for general use, while our 200 series is optimal for short stroke applications. Between the two series, we cover a range +/- 0.05” up to 4.0”. These LVDTs provide excellent linearity and high sensitivity. They are typically constructed of stainless steel, with other materials including alloys available for more demanding uses.  We can also customize our standard units to your specific needs. These typically include extreme operating environments, such as those under high pressure. If you need assistance in sourcing the right DC-DC LVDT for your needs, contact our application engineering […] - [Series 430](https://transtekinc.com/products/ac-ac-lvdts/series-430/): Series 430 0.3” O.D. AC LVDTs Ranges from ±0.010″ to 1.0″ 0.3” Outer Diameter Non-linearity <±0.25% Carbon Steel Construction Lightweight Core Assembly Low Temperature Coefficient The Series 0430, 0.3” O.D. miniature AC LVDTs offer precision linear displacement measurements for applications with strokes from +/-0.01″ to +/-1.0″. The small size of these transducers make them ideal for weight critical applications and placement in tight spaces. The core is light enough to be used in systems with low driving forces or high accelerations without adversely affecting the system performance.   > Download Spec Sheet (PDF) Transducer Specifications *Monotonic output voltage past each end […] - [Series 290](https://transtekinc.com/products/ac-ac-lvdts/series-290/): Series 290 General Purpose AC LVDTs Ranges from ±0.05” to 6.0” Non-linearity ≤ 0.5% High Input Impedance 0.5” and 0.75” Outer Diameter The Series 290 AC LVDTs are general purpose transducers designed to operate in most industrial environments. All units are terminated in 6 leads, allowing convenient connection to most conditioning electronics. > Download Spec Sheet (PDF) Specifications Electrical Notes: Electrical specifications are based on energizing the primary coil with the specified excitation frequency. Nominal values are given for sensitivity. Operating Temperature -50°F to +250°F (-46°C to +121°C)   Specifications – Mechanical For technical drawings, and more information please download the […] - [Series 280](https://transtekinc.com/products/ac-ac-lvdts/series-280/): Series 280 Economy AC LVDTs Ranges from ±0.05” to 2.0” Non-linearity ≤ 0.4% Large Core to Bore Clearance Low Cost The Series 280 AC LVDTs are designed and manufactured to provide an accurate, yet economical, means of measuring linear displacement. The transducers are available in working ranges of 0.1 to 2.0 inches. Maximum non-linearity is specified as ± 0.4% of full scale. > Download Spec Sheet (PDF) Specifications – Electrical Notes: Electrical specifications are based on energizing the primary coil with the specified excitation frequency. Nominal values are given for sensitivity. Operating Temperature -50°F to +250°F (-46°C to +121°C)   Specifications […] - [Series 230](https://transtekinc.com/products/ac-ac-lvdts/series-230/): Series 230 0.375” O.D. AC LVDTs Ranges from ±0.005” to 2.0” 0.375” Outer Diameter Non-linearity ≤0.25% High Sensitivity Low Temperature Coefficient Low Mass Core The Series 230 3/8” AC LVDTs offer precision linear displacement measurements for applications with strokes from 0.01 to 2.0 inches. The transducers have been designed with an extremely low temperature coefficient, and non-linearity of less than ± 0.25% F.S. The small size of these transducers make them ideal for weight critical applications and placement in tight spaces. The core is light enough to be used in systems with low driving forces or high accelerations without adversely affecting the system performance. […] - [Series 210-220](https://transtekinc.com/products/ac-ac-lvdts/series-210-220/): Series 210-220 Long Stroke AC LVDTs Ranges from ±0.25” to 60” Stainless Steel Construction Non-linearity ≤ 0.25% High Sensitivity Low Temperature Coefficient Splashproof The Series 210-220 AC LVDTs offer precision linear displacement measurements for applications with strokes from 0.5 to 60 inches. The transducers have been designed with an extremely low temperature coefficient, and non-linearity of less than ±0.25% F.S. Variable pitch secondary windings are incorporated into the design with computer controlled winding machines to minimize package length to stroke ratio, and assure a uniform product. > Download Spec Sheet (PDF) Transducer Specifications Specifications at Reference Frequency Dimensional Diagram Core Extension […] - [AC-AC LVDTs](https://transtekinc.com/products/ac-ac-lvdts/): AC-AC LVDTs Trans-Tek designs and manufactures AC-AC LVDTs for a variety of standard and specialty applications, available with an extensive list of options and configurations. Ranges as low as ±0.005” with our series 230 up to 60” with our series 210-220. Ultra precision models are available, as well as those for more typical industrial uses.  Our AC-AC LVDTs come in a range of dimensions to accommodate available space and operating room. Diameters as low as 0.30” are available. Materials include stainless steel, carbon steel, with alloys available as an option for more challenging operating environments.  We can also modify our standard […] - [Products](https://transtekinc.com/products/): Products AC-AC LVDTs > View Details DC-DC LVDTs > View Details Gaging LVDTs > View Details Angular Displacement > View Details Linear Velocity > View Details Oscillators/Demodulators > View Details DC Power Supplies > View Details LVDT 1003-Series Meter > View Details LVDT Mounting Clamps > View Details Reverse Engineering > View Details Custom Design > View Details Made in USA > View Details - [Made In The USA](https://transtekinc.com/made-in-the-usa/): Made In The USA Quality Parts – Quality Service We are proud to say, our products are made in the USA! When it comes to solving your measurement problems, we have the tools and expertise to design, build and ship the products you need. Our engineers, with their extensive experience, will find or design the right position or velocity sensor to meet your most demanding requirements. Our complete production facility is geared to meet your delivery needs – whether it’s for a standard or custom sensor solutions. Our LVDT Research & Development (R&D) program is continuously expanding our product line to […] ## Optional - [Agent (MCP protocol)](websites-agents.hostinger.com/transtekinc.com/mcp) [comment]: # (Generated by Hostinger Tools Plugin)