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LIN Extreme Environment Displacement Transducer


High cycle life
High radiation resistance
High temperature survival
Submersible
Stainless steel
Infinite resolution
image of LIN Extreme Environment Displacement Transducer
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.
The LIN differential-inductance LVDTs are inductive (similar to an LVDT sensor) and because there is no contact across the sensor element it is very robust. The LVDTs are available as either unguided or spring return versions.
This sensor is appropriate for high temperature, high pressure and high nuclear radiation position measurement applications. Many applications in turbines, in nuclear power stations and in research labs are appropriate for this sensor.
Unguided version.
On our 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
End (axial) exit cable.
dimensional drawing of LVDT unguided
D1=15.0mm
D3=3.5mm
D4=4.0mm
ID=4.5mm
TF=M3 x 0.5, 10mm
Type Range Operating temperature range Maximum radiation dose L X (nom) Total weight Armature weight Inward over-travel Linearity error (% F.S.)
LIN52 ±5mm -220℃ to 220℃ 1M Gy 105mm 20mm 150g 7g 5mm ±0.5% F.S.
LIN56 ±5mm -220℃ to 600℃ 1G Gy 105mm 20mm 150g 7g 5mm ±1% F.S.
LIN152 ±15mm -220℃ to 220℃ 1M Gy 182mm 40mm 200g 13g 15mm ±0.5% F.S.
LIN156 ±15mm -220℃ to 600℃ 1G Gy 182mm 40mm 200g 13g 15mm ±1% F.S.
LIN252 ±25mm -220℃ to 220℃ 1M Gy 284mm 60mm 250g 21g 25mm ±0.5% F.S.
LIN256 ±25mm -220℃ to 500℃ 1G Gy 284mm 60mm 250g 21g 25mm ±1% F.S.

Spring return version.
Our 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.
End (axial) exit cable.
dimensional drawing of LVDT spring return
D1=15.0mm
SRD=15mm
TF=M3 x 0.5, 13mm
Type Range Operating temperature range Maximum radiation dose L X (nom) Total weight Spring force at X Spring rate Inward over-travel Outward over-travel Linearity error (% F.S.)
LIN52A ±5mm -220℃ to 220℃ 1M Gy 119mm 57mm 170g 5.2N 1.3N/cm 7mm 23mm ±0.5% F.S.
LIN56A ±5mm -220℃ to 350℃ 1G Gy 119mm 57mm 170g 5.2N 1.3N/cm 7mm 23mm ±1% F.S.
LIN152A ±15mm -220℃ to 220℃ 1M Gy 197mm 99mm 220g 6.9N 1.0N/cm 25mm 20mm ±0.5% F.S.
LIN156A ±15mm -220℃ to 350℃ 1G Gy 197mm 99mm 220g 6.9N 1.0N/cm 25mm 20mm ±1% F.S.
LIN252A ±25mm -220℃ to 220℃ 1M Gy 299mm 94mm 270g 7.4N 1.0N/cm 11mm 20mm ±0.5% F.S.
LIN256A ±25mm -220℃ to 350℃ 1G Gy 299mm 94mm 270g 7.4N 1.0N/cm 11mm 20mm ±1% F.S.

Specification
Excitation/supply (acceptable) 0.5V to 5V rms, 2.4kHz to 9.6kHz (sinusoidal)
Temperature coefficient (combined zero and span) ±0.02% F.S. /℃ (typical)
Electrical termination 2m (integral cable) Longer available to order.
Maximum static pressure 20MPa (250℃ maximum)

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