Bestech Australia has introduced LVC-2500, a single channel signal conditioner that operates on 10-30VDC power to support standard LVDT, RVDT, and VRT half-bridge sensors.
The LVC-2500 has been designed for use in 24V systems with PLCs and mini-PLCs, or in 12V mobile and vehicular testing systems. The LVC-2500 offers a choice of three analogue outputs of 0 to ±10VDC, 0 to 10VDC or 4 to 20mA.
The LVC-2500 from Macrosensors 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.
The LVC-2500 produces a low distortion sine wave to excite the LVDT and employs a synchronous demodulator to convert the LVDT AC output to more useful DC outputs proportional to core position. The LVC-2500 incorporates a 2-pole low pass output filter.
The external zero control permits output offset adjustment from -100% to +100% of full scale output of this LVDT signal conditioner. 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.
For multiple channel applications, several LVC-2500 modules can be connected together in master/slave mode to synchronise their excitation oscillator frequency, thereby eliminating effects of heterodyning and spurious beat frequency signals, cross talk, and intermodulation effects.
The LVC-2500 includes A+B, A-B, (A+B)/2. Thus two LVC-2500 signal conditioners can be connected together with a pair of LVDT gauging probes to measure differential dimension, thickness, average height, etc.
The features of the LVC-2500 include the following:
- DIN-rail mountable
- Analogue voltage or current loop output
- Non-interactive adjustments
- No phase adjustment needed
- Supports all standard LVDTs and VR half-bridge sensors
The user selectable features include:
- 0 to ±10V, 0 to 10V, or 4 to 20mA output
- 3, 5, or 10kHz excitation frequency
- Master/slave excitation synchronisation
- 250 or 500Hz output filtering