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Submersible LVDT Sensor DCW Series

Image DCW

The DCW Series LVDT 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.

These 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. This series of displacement transducer is available as either an unguided, captive or spring return version.

Available product lines:

  • DCWH - Model with ±5VDC signal output (requires ±15VDC symmetrical supply)
  • DCWV - Model with isolated 0-10VDC signal output (+24VDC supply)
  • DCWL - Model with isolated ±2.2VDC signal output (supply +6~18VDC)
  • DCWC - Model with 4-20mA (2-wire) signal output (supply +12~36VDC)

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 captive guided displacement transducers have bearings to guide the armature inside the measurement sensor. Captive LVDTs are for position measurement applications where guidance may be poor and end bearings may be required.

The 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. Unguided position measurement transducers are appropriate where external guidance is available and give truly non-contact operation

The spring displacement transducer has bearings to guide the armature inside the measurement sensor and a spring which pushes the armature to the fully out position. Spring return LVDTs are appropriate where it is not possible to connect the transducer armature to the moving component being measured.


  • High cycle life
  • Stainless steel
  • High accuracy
  • Submersible
  • High resolution
  • Voltage / 4-20mA output


  • General
  • Academic instrumentation