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LVDT / RVDT Signal Conditioner

LVDT / RVDT Signal Conditioner

5 year warranty offer
Environmental Data
Operating Temperature -20 to 75°C (0 to 165°F)
Temperature Sensitivity <0.02% of FSO/°C (<0.01% of FSO/°F)
EMC Compliance Emissions: EN55011:2007
Immunity: EN61000-4-2:2009,
EN61000-4-4:2004, EN61000-4-6:2009,
EN61000-4-3:2010+A2:2010
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  • 0-5V, 0-10V, 0.5-4.5V, ±5V,
    ±10V, or 4-20 mA output
  • 1.5Vrmsor 3.0Vrmssensor excitation
  • 2.5, 5, 7.5, or 10 kHz excitation frequency
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  • Push-button or RS-485 command auto-calibration
  • Analog voltage or current loop output
  • Digital RS-485 interface
  • Supports all standard AC LVDTs, RVDTs, and
    VR half-bridge sensors
  • Master/slave excitation synchronization
  • DIN-rail mountable
  • Color-coded terminal blocks

The EAZY-CAL™ LVC-4000 is a standalone signal conditioner, supporting a wide range of AC LVDTs, RVDTs, and VR half-bridges, while providing several choices of voltage, current, and digital RS-485 outputs. Push-button calibration offers intuitive operation as compared to signal conditioners with span and offset trim pots. Fault conditions, such as a wire break on LVDT or RVDT connections, are indicated by blinking LEDs, fault condition error output, and Error Flag Open Collector signal (see manual for details). The LVC-4000 operates from a 9-30V DC power supply and is housed in a polyamide DIN rail-mounted enclosure. Calibration instructions, terminal functions, LVDT connection diagram and DIP switch functions are printed on the side panels for convenience.

Synchronization to other signal conditioners is accomplished by a daisy chain connection to a synchronization bus. One unit will assume the Master function based on DIP switch priority setting. If a fault should occur, the next highest priority unit will take over as Master.

With the use of the RS-485 port, a host computer is able to retrieve measurement data, receive operational status, perform remote calibration, and perform hot swap reconfiguration.

Electrical Data
Power Input 9-30V DC (90 mA max. @ 24V DC)
Sensor Excitation 3.0Vrms (1.5Vrms selectable)
Sensor Excitation Frequency 2.5 kHz, 5 kHz, 7.5 kHz, or 10 kHz
Input Sensitivity Range 55 mVrms to 5.5 Vrms full scale input produces full scale DC output
Full Scale Output 0-5V DC, 0-10V DC, 0.5-4.5V DC, ±5V DC, ±10V DC or 4-20 mA
Output Non-Linearity ≤ ±0.1% Full Scale Output
Output Voltage Ripple 1 mVrms max. (2.5 kHz excitation, no filter)
2 mVrms max. (10 kHz excitation, no filter)
Output Voltage Ripple 1 mVrms max. (2.5 kHz excitation, no filter)
2 mVrms max. (10 kHz excitation, no filter)
Frequency Response (-3dB) 500 Hz max.
LVC-4000
LVDT / LVRT Connection Diagram
lvdt wiring
Half-Bridge Connection Diagram
half bridge sensor wiring
Dimensional Data
signal conditioner dimensions
LVDT / RVDT Signal Conditioner Ordering Information

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