AC LVDT Signal Conditioner DIN Rail Mount LVC-2500 Series

The Macro Sensors LVC-2500 is a single channel signal conditioner that operates on 10-30 Volts DC power to support standard LVDT, RVDT, and VRT half-bridge sensors. Designed expressly for use in 24 Volt systems with PLCs and mini-PLCs, or in 12 Volt mobile and vehicular testing systems, it offers the user a choice of three analog outputs: 0 to ±10 V DC, 0 to 10 V DC, or 4 to 20 mA (sourcing) current loop in a 3-wire common ground system in which the power ground is connected to the output signal's ground.

The LVC-2500 is packaged in a DIN-rail mounting thermoplastic case with recessed screw-clamp terminals for all connections and multi-turn front-panel-accessible span and zero adjustments. It uses internal circuitry that produces a low distortion sine wave to excite the LVDT and employs a synchronous demodulator to convert the LVDT's AC output signal to more useful DC outputs proportional to core position. Additional circuitry regulates the ASIC’s DC operating power and provides span and zero adjustability, a 2-pole low pass output filter, and the voltage-to-current conversion that drives the 4-20 mA current loop output.

Besides the externally adjustable span control, an LVC-2500 also incorporates movable coarse gain jumpers which allow it to operate over an LVDT full scale output signal range of 100 to 1. The external zero control permits output offset adjustment from -100% to +100% of full scale output. The span and zero controls do not interact with each other. The LVC-2500 does not require a phase adjustment control, so it can work satisfactorily with reasonably long cables between it and the LVDT.

By shifting a movable internal jumper in the LVC-2500, a user can choose 3, 5, or 10 kHz nominal excitation frequencies at a level of 3 Volts rms.

GENERAL SPECIFICATIONS