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Miniature DC Output Displacement Transducers with Acetal Bearings
TRODEKS Engineering | Thermocouples, Pressure Transducers, Flow Meters, PID Controllers
  • High Output Miniature LVDT Transducers
  • Ideal for Small Actuators
  • Delrin Bearings for Precise Motion
  • Infinite Resolution
  • Rugged Low Mass Construction
  • Compatible with Standard DC Signal Conditioning Modules and Instruments
  • Applications:
     Proprotional Actuators
     Robotic Automation
     Linear Servo Actuator
     Industrial Automation Controls
     Motion Control
 Manuals (contact with email : [email protected])


The LD400 Series miniature dc output LVDT transducers provide a method of measuring displacements up to ±5 mm (±0.20 inch) with very high accuracy and infinite resolution. They have a free-guided armature incorporating Acetal bearings, which provide near frictionless motion to detect the smallest movement the associated instrumentation is capable of identifying. These transducers utilize a precision linear variable differential transformer (LVDT) as the measuring source, together with hybrid ICs which include an oscillator, demodulator, and filter; together, they comprise a self-contained unit that accepts dc input and provides dc output relative to armature position. The unit's high linearity and low mass of moving parts is ideally suited to applications in civil, mechanical, chemical and production engineering.


Linearity: 0.3% FS
Excitation: 10 to 24 Vdc regulated
Energizing Current at 10 Vdc:
  LD400-1: 10 mA
  LD400-25: 10 mA
  LD400-5: 13 mA
Response Time:
  LD400-1 and LD400-2.5 = 5 ms
  LD400-5 = 3 ms
Frequency Response: 50 Hz for -3 dB
Ripple: <1% FS
Thermal Effect:
  LD400-1: <0.02% FS/°C
  LD400-2.5 and LD400-5: <0.01% FC/°C
  Sensitivity: <0.025% FC/°C
Compensated Temperature Range:-20 to 80°C (-4 to 176°F)
Operating Temperature Range: -20 to 80°C (-4 to 176°F)
Electrical Connection: 2.9 m (9') shielded, color-coded cable
Sensitivity and Linearity Data: Provided with a transducer output impedance of 2.4 kΩ into a calibration load of 20 kΩ at 20°C (68°F); variations in these parameters will change performance

Threaded Core: M2 thread
Core Material: Ni/Fe-Radio Metal 50
Case Material: 400 Series stainless steel

Electrical Connections:
  Red: + Excitation
  Blue: - Excitation
  White: + Signal*
  Green: - Signal
  Yellow: No connection
* White and red in phase for positive inward displacement.
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