Resources
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 Fit Straight Line, Best Fit Straight Line Through Zero, and Zero Based Average Terminal.
It is possible to use LVDTs in a vacuum environment, but certain factors such as outgassing and heat dissipation need to be addressed.
Mechanical Frequency Response of the Series 350
The frequency response of a gaging transducer is typically determined by the springs used to extend the shaft. Frequency response values are listed in this TekNote.
Passive Signal Conditioning for DC LVDTs
In the Series 350, the LVDTs are powered by a DC voltage, and provide a DC voltage output. The normal output is bi-polar, ranging from a negative voltage to positive voltage passing through zero, or the null position. In certain applications, it is necessary to have a unipolar output or bipolar output of a certain magnitude. Using a simple resistive voltage divider network, the output can be offset and scaled.