Excellence in Linear and Angular Displacement
and Linear Velocity Transducers

Home » 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 use of a small, spring-loaded LVDT. These transducers are also an excellent replacement for a standard dial indicator.

Specifications - Electrical (Reference frequency 7.0 KHz)

SPECIFICATION	UNITS	0330-0000	0331-0000	0332-0000	0333-0000	0334-0000	0335-0000	0336-0000	0337-0000
LINEAR RANGE	±Inches ±(mm)	0.005 (0.13)	0.01 (0.26)	0.025 (0.64)	0.05 (1.27)	0.1 (2.54)	0.25 (6.35)	0.5 (12.7)	1.0 (25.4)
NON LINEARITY		< ±0.25% Max.			< ±0.20% Max.
OVERTRAVEL		OUTPUT MONOTONIC OVER ENTIRE MECHANICAL TRAVEL
TEMPERATURE RANGE		-4°F to +176°F (-20°C to +80°C) Operating; -65°F to +176°F (-54°C to +80°C) Storage
TEMP. COEFFICIENTS		ZERO: < ±0.001% Linear Range/°F; SENSITIVITY: < ±0.01% /°F
SENSITIVITY	V/in./V ±10%	4	4	4	4	4	2	1	0.5
PHASE ANGLE	°	5	5	5	5	5	0	0	0
INPUT IMPEDANCE	Ohms	260	255	250	245	480	320	300	355
INPUT RESISTANCE	Ohms DC	36	36	36	36	60	22	30	40
OUTPUT RESISTANCE	Ohms DC	135	135	135	135	205	210	170	185
NULL VOLTAGE	% V Ex. Max.	0.2	0.25	0.3	0.4	0.8	1	1	1
MAXIMUM EXCITATION		15 VRMS

Specifications Mechanical

SPECIFICATION	UNITS	0330-0000	0331-0000	0332-0000	0333-0000	0334-0000	0335-0000	0336-0000	0337-0000
TOTAL LENGTH A	Inches (mm)	2.45 (62.2)	2.45 (62.2)	2.45 (62.2)	2.45 (62.2)	2.93 (74.4)	5.35 (136)	6.86 (174)	10.45 (265)
SHAFT EXTENSION B	Inches (mm)	0.65 (16.5)	0.65 (16.5)	0.65 (16.5)	0.65 (16.5)	0.83 (21.1)	1.22 (30.9)	1.69 (42.9)	2.60 (66.0)
NULL POSITION C	Inches (mm)	0.1 (2.54)	0.1 (2.54)	0.1 (2.54)	0.1 (2.54)	0.15 (3.81)	0.35 (8.89)	0.57 (14.5)	1.15 (29.2)
SPRING FORCE @ NULL	Lbs.	0.73	0.73	0.73	0.73	1.07	0.74	0.57	0.70
FREQ. RESPONSE	Hz	250	180	110	75	45	18	6	6

Dimensional Drawing

Schematic

Accessories

PART NUMBER	DESCRIPTION
A002-0041	Adapter for alternate contact tips: 5-60 Thread to 4-48 UNF-2B Thread
G000-0000	Contact Tip, AGD #7
G000-0008	Contact Tip, .30″ Spherical O.D.; 5-60 Internal Threads. (Included with transducer)

DC-DC Operations with Optional Oscillator/Demodulator

To facilitate prototyping, or in instances where the preference is a DC in – DC out system, any of the standard or High Temperature Series 330 can be used in conjunction with the Model 1000- 0014 Oscillator/Demodulator. Designed to work together, the DC system gives the same level of performance as provided by the AC LVDT alone. The high level DC output voltage can be directly interfaced with analog circuits as well as data acquisition cards, PLCs, or A/D converters. Provisions for customizing the Model 1000-0014 to provide zero offsets and nonstandard gains allow a simple and cost effective method of tailoring a system to meet individual customer requirements.

System Specifications (Combined Performance of LVDT and 1000-0014)

SPECIFICATION	UNITS	0330-0000	0331-0000	0332-0000	0333-0000	0334-0000	0335-0000	0336-0000	0337-0000
SIGNAL OUTPUT	±VDC	0.2	0.4	1.0	2.0	4.0	5.0	5.0	5.0
OUTPUT CURRENT		±3 mA without distortion
OUTPUT RIPPLE	VRMS	0.004	0.008	0.02	0.03	0.03	0.03	0.03	0.03
POWER INPUT		±14.5 to ±28 VDC @ ±100 mA Max.; Input polarity protected
TEMPERATURE RANGE (1000-0014)		+32°F to +158°F (0°C to +70°C) Operating; -65°F to +257°F (-54°C to +125°C) Storage
TEMP. COEFFICIENTS (1000-0014)		Zero < ±0.00035 VDC/°F; Sensitivity < ±0.02%/°F