LVDT Signal Conditioner | LVDT Amplifier

Delivers a Conditioned Analogue Output from your LVDT Transducer

LVDT Signal Conditioner and Amplifier

At a Glance

  • 4.5Vac LVDT Excitation @ 1-5kHz
  • Output: 0-5Vdc, 0-10Vdc, 4-20mA, 0-20mA, ±5Vdc or ±10Vdc
  • Environmental Protection: IP65
  • Bandwidth: 200Hz max.
  • Mains & 18-24Vdc Versions
  • Delivers Conditioned Analogue Outputs From Your LVDT Transducers 
  • Wide Bandwidth (20 HZ) Ideal for Test & Measurement Applications
  • Choose an AC or DC Powered Unit Depending on Your Setup
  • Ideal to use in Harsh Environments – Total Dust & Low Pressure Water Jet Protection


The LVDT signal conditioner / LVDT amplifier from Applied Measurements is designed specifically for use with LVDT displacement transducers to provide a conditioned analogue voltage or current output.

There are two versions of the LVDT signal conditioner available: the LVDT/A which operates from 110/240Vac and the LVDT/D requires a DC supply of between 18 and 24 Volts.

The LVDT signal conditioner provides an excitation voltage of 4.5Vrms with switch selectable frequencies ranging from 1kHz to 5kHz, making it suitable for use with LVDTs from many different manufacturers.  LVDT sensitivities between 20 milivolts and 10 volts can be adjusted for using DIL switches with potentiometric fine adjustment of zero and gain for precise calibration.

A wide frequency response is available from DC to 200Hz, plus a low pass filter when required to reduce high frequency fluctuations or induced electrical noise.

Suitable LVDT displacement transducers for use with the LVDT signal conditioner can be found in our LVDT Displacement Sensor product section.

Technical Specifications

Power supply AC LVDT/A only (110/230 V AC) 50-60Hz99/198110/230126/253Vac
Power supply DC: LVDT/A and /D182428Vdc
Power supply current DC: (depends on loading)138145150mA (200R)
Excitation-4.5-V rms
LVDT Frequency (Selected by Switch 1,2,3,4,5 kHz)1-5kHz
LVDT Impedance50200-Ohms
LVDT Sensitivity (switchable)0.02-10V
Gain Adjustment (Pot – fine adj)--25% FSD
Offset Adjustment (Pot – fine adj)--10% FSD
Offset Adjustment (Switchable – coarse adj)--30% FSD
Output Load (voltage output)0-2mA
Output Load (current output)--500Ohms
Filter cut-off (switchable ranges)5-200Hz
Zero Temperature Coefficient-24µV/˚C
Span Temperature Coefficient-0.010.015%/˚C
Linearity-0.050.1% FSD
Gain Stability- 1st 1000 hours-0.20.4% FSD
90 Day Offset Stability-610µV
Noise (1kHz / 20Hz filter / DC powered)-37mV p-p
Output Options±10V, ±5V, 0 - 10 V, 0 - 5V, 0 - 20mA, 4 -20mA. NB: Current output is link selectable for source or negative sink (common negative or common positive.
Operating Temperature0-50˚C
Storage Temperature-20-70˚C
Humidity95 maximum non condensing%
ConnectionsField screw terminals - 2.5mm² rising clamp
EnclosureABS case 160 x 80 x 55 sealed to IP65 fitted with 3 off cable glands
ControlsGain pot, Offset pot, Coarse gain switches, Coarse offset switches, Filter cut-off switches, Frequency select switch, Output mode switch.
Environmental ProtectionABS case sealed to IP65
Dimensions160 x 80 x 55 (depth)mm
Safety/Low Voltage Directive73/23/EEC amended by 93/68/EEC
BS EN 61010-1:2001, IEC 1010-1-1990
EMC Directive89/336/EEC
Basic Standard BS EN 61326:1998
EMC EmissionsBS EN 55011:1998
EMC ImmunityBS EN 61000-42:1995
BS EN 61000-4-3:2002
BS EN 61000-4-4:2004
BS EN 61000-4-11:2004

Product Dimensions

LVDT Signal Conditioning Amplifier Outline Drawing

Ordering Codes & Options

Core ProductSupply VoltageExample Result
LVDT99-120/ 198-253VacLVDT/A Amplifier
LVDT18-28VdcLVDT/D Amplifier


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    • Over 100 years of expert transducer knowledge
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