(NewTek Sensor Solutions: Pennsauken, NJ) -- NewTek Sensor Solutions offers a white paper on the “Attributes and Benefits of AC- and DC-operated LVDT Position Sensors” that compares the differences in technology, unique properties, and ideal applications for each type of sensor.

Without any internal electronics, AC-operated displacement sensors can tolerate wider temperature ranges to perform in hostile environments and can be packaged in small sizes to fit in hard-to-reach installations. However, AC-LVDTs require an external signal conditioner that supplies the excitation signal and measures output.

DC-LVDTs, on the other hand, contain high-density microelectronics that incorporate signal conditioning and processing functions. While not performing to the same temperature levels as AC versions, they offer higher accuracy and are available in 4-20mA designs.

 …