D5W Submersible LVDT Displacement Transducer - Hylec Controls

D5W Submersible LVDT Displacement Transducer

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These transducers are for displacement / position measurement. They make an accurate position measurement of the movement of the armature (the sliding part) relative to the body of the displacement transducer.

This transducer uses the Linear Variable Differential Transformer (LVDT) principle which means that it is probably the most robust and reliable position sensor type available. The strength of the LVDT sensor's principle is that there is no electrical contact across the transducer position sensing element which for the user of the sensor means clean data, infinite resolution and a very long life.

Our submersible displacement transducers are designed to make measurements whilst submerged in suitable liquids. Fluids which are non-magnetic can be allowed to flood the armature tube without affecting the operation of the transducer.

The LVDTs are available as either unguided or spring return versions.

On our D5W unguided LVDTs the armature assembly is a separate component, to make a measurement the user must guide the armature inside the body without touching the sides. Our D5W unguided position measurement transducers are appropriate where external guidance is available and give truly non-contact operation.


  • high accuracy
  • high cycle life
  • submersible
  • stainless steel
  • infinite resolution
  • miniature


Excitation/supply (acceptable) 0.5V to 7V rms, 2kHz to 10kHz (sinusoidal)
Excitation/supply (calibrated) 5V rms, 5kHz (sinusoidal)
Linearity error (Standard)  ±0.5% F.S.
Linearity error (Optional on some models) ±0.25% F.S.
Linearity error (Optional on some models) ±0.1% F.S.
Temperature coefficient (span)  ±0.01% F.S. /℃ (typical)
Operating temperature range  -20℃ to 125℃
Mounting thread M3x0.5
Electrical termination 2m (integral cable) Longer available to order.
Maximum static pressure 3.4MPa