LIN Extreme Environment Displacement Transducer

High cycle life
High radiation resistance
High temperature survival
Submersible
Stainless steel
Infinite resolution




   Data sheet (262kb)
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.

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.


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

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
  ID= 4,5mm
D1= 15,0mm
D3= 3,5mm
D4= 4,0mm
TF= M3 x 0,5, 10mm
Type Range Operating temperature range Maximum radiation dose L X Total weight Armature weight Over-Travel Linearity error (% F.S.)
Inward over-travel
LIN52 ±5mm -220°C to 220°C 1M Gy 105mm 20mm 150g 7g 5mm <±0,5% F.S.
LIN56 ±5mm -220°C to 600°C 1G Gy 105mm 20mm 150g 7g 5mm <±1% F.S.
LIN152 ±15mm -220°C to 220°C 1M Gy 182mm 40mm 200g 13g 15mm <±0,5% F.S.
LIN156 ±15mm -220°C to 600°C 1G Gy 182mm 40mm 200g 13g 15mm <±1% F.S.
LIN252 ±25mm -220°C to 220°C 1M Gy 284mm 60mm 250g 21g 25mm <±0,5% F.S.
LIN256 ±25mm -220°C to 600°C 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.
D1= 15,0mm
TF= M3 x 0,5, 13mm
SRD= 15mm
Type Range Operating temperature range Maximum radiation dose L X Total weight Spring force (nom) Over-Travel Linearity error (% F.S.)
Spring force at X Spring rate Inward over-travel Outward over-travel
LIN52A ±5mm -220°C to 220°C 1M Gy 119mm 57mm 170g 5,2N 1,3N/cm 7mm 23mm <±0,5% F.S.
LIN56A ±5mm -220°C to 350°C 1G Gy 119mm 57mm 170g 5,2N 1,3N/cm 7mm 23mm <±1% F.S.
LIN152A ±15mm -220°C to 220°C 1M Gy 197mm 99mm 220g 6,9N 1,0N/cm 25mm 20mm <±0,5% F.S.
LIN156A ±15mm -220°C to 350°C 1G Gy 197mm 99mm 220g 6,9N 1,0N/cm 25mm 20mm <±1% F.S.
LIN252A ±25mm -220°C to 220°C 1M Gy 299mm 94mm 270g 7,4N 1,0N/cm 11mm 20mm <±0,5% F.S.
LIN256A ±25mm -220°C to 350°C 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) Electrical termination 2m (integral cable) Longer available to order,
Temperature coefficient (combined zero and span)±0,02% F.S. /°C (typical) Maximum static pressure 20MPa (250°C maximum)


Options and accessories
Electronics


All dimensions and specifications are nominal. www.rdpe.com/za/lin.htm 20080110
Due to our policy of on-going development, specifications may change without notice. Any modification may affect some or all of the specifications for our equipment.
 
Manufacturer
RDP Electronics Ltd
Grove Street, Heath Town
Wolverhampton, West Midlands, WV10 0PY
United Kingdom
Tel: +44 1902 457512
Fax: +44 1902 452000
Email: sales@rdpe.com
URL: www.rdpe.com
 Distributor
Transducer Technology
Unit 8, Canberra Industrial Park
Derrick Coetzee Street
Jet Park, 1459, South Africa

Tel: +27 11 397 7733
Fax: +27 11 397 8909
Email: sales@transducers.co.za

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