922937 Solartron Metrology LVDT

Miniature dc Energised_x000D_ With built-in electronic oscillator and demodulator producing an dc output proportional to core position_x000D_ DFg series; have separate coil/electronic assemblies with a free core fitted with a polyacetal homopolymer bearing which can rub on the inside coil assembly to ease guiding requirements_x000D_ DG2.5; This has a non-rotating spring-loaded armature running in precision linear ball bearings_x000D_ _x000D_ Linear Variable Differential Transformers (LVDT)_x000D_ These devices comprise a movable nickel iron core and three coils - one for energisation and two for pick-up. They need to be driven by a sine wave to produce an output amplitude and phase directly proportional to the position of the core with respect to the pick-up coils. A phase sensitive detector is required to demodulate the output signal. The main advantages of LVDTs are;_x000D_ No wear problems as with potentiometers_x000D_ Infinite resolution, high accuracy and linearity_x000D_ No friction introduced into the measured system_x000D_ Available in ranges from ±1mm to ±50mm_x000D_ Note_x000D_ RS LVDT's datasheet Stock No. 232-4049 is available on request.