D5W Submersible LVDT Displacement Transducer

High accuracy
Miniature
High cycle life
Submersible
Stainless steel
Infinite resolution



RDP LVDT How it Works

   Data sheet (253kb)
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.

LVDT transducers require external signal conditioning as detailed in the 'Electronics' section of this website.

Unguided version.Connection details
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.
  D1
D5/40W 0.31''
D5/100W to MD5/500W 0.37''
D3 = 0.079''
TF = M3x0.5
CL (Cable length). = See specification.
CSL (Cable sleeve length). = See specification.
Type Range Linearity error (% F.S.) L X (nom) ID Total weight Armature weight TF Inward over-travel Over-Travel
Sensitivity (nom)
D5/40W ±1mm (±0.04'') <±0.5/±0.25 1.83'' 0.6'' 0.091'' 0.7oz 0.05oz 0.50'' 0.08'' 143mV/V
D5/100W ±2.5mm (±0.1'') <±0.5/±0.25 2.07'' 0.8'' 0.090'' 0.8oz 0.05oz 0.55'' 0.06'' 375mV/V
D5/200W ±5mm (±0.2'') <±0.5/±0.25/±0.1 2.17'' 1.0'' 0.090'' 0.8oz 0.06oz 0.73'' 0.11'' 320mV/V
D5/300W ±7.5mm (±0.3'') <±0.5/±0.25/±0.1 2.76'' 1.2'' 0.100'' 0.9oz 0.06oz 0.73'' 0.16'' 435mV/V
D5/400W ±10mm (±0.4'') <±0.5/±0.25 2.91'' 1.3'' 0.100'' 1.2oz 0.07oz 0.73'' 0.15'' 567mV/V
MD5//500W ±12.5mm (±0.5'') <±0.5/±0.25 3.54'' 1.4'' 0.100'' 1.5oz 0.08oz 0.73'' 0.15'' 773mV/V

Side (radial) exit cable.Connection details
  D1
D5/40WRA 0.31''
D5/100WRA to MD5/500WRA 0.37''
D3 = 0.079''
TF = M3x0.5
A = 0.3'' (nominal)
CL1 = 0.7''
CL (Cable length). = See specification.
CSL (Cable sleeve length). = See specification.
Type Range Linearity error (% F.S.) L X (nom) ID Total weight Armature weight TF Inward over-travel Over-Travel
Sensitivity (nom)
D5/40WRA ±1mm (±0.04'') <±0.5/±0.25 1.88'' 0.7'' 0.091'' 0.7oz 0.05oz 0.50'' 0.08'' 143mV/V
D5/100WRA ±2.5mm (±0.1'') <±0.5/±0.25 2.07'' 0.8'' 0.090'' 0.8oz 0.05oz 0.55'' 0.06'' 375mV/V
D5/200WRA ±5mm (±0.2'') <±0.5/±0.25/±0.1 2.17'' 1.0'' 0.090'' 0.8oz 0.06oz 0.73'' 0.11'' 320mV/V
D5/300WRA ±7.5mm (±0.3'') <±0.5/±0.25/±0.1 2.76'' 1.2'' 0.100'' 0.9oz 0.06oz 0.73'' 0.16'' 435mV/V
D5/400WRA ±10mm (±0.4'') <±0.5/±0.25 2.91'' 1.3'' 0.100'' 1.2oz 0.07oz 0.73'' 0.15'' 567mV/V
MD5/500WRA ±12.5mm (±0.5'') <±0.5/±0.25 3.54'' 1.4'' 0.100'' 1.5oz 0.08oz 0.73'' 0.15'' 773mV/V

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.
Spring return transducers should be cleared of air as trapped air may compress under pressure an cause errors. The mechanical frequency response of transducers may be reduced by fluid in the internal tubes.

End (axial) exit cable.Connection details
  D1 D2 D3 L2
D5/40AW 0.31'' 0.28'' 0.156'' 0.29''
D5/100AW to MD5/500AW 0.37'' 0.31'' 0.187'' 0.31''
CL (Cable length).   =   See specification.
CSL (Cable sleeve length).   =   See specification.
Type Range Linearity error (% F.S.) L X (nom) Total weight Over-Travel Sensitivity (nom)
Inward over-travel Outward over-travel
D5/40AW ±1mm (±0.04'') <±0.5/±0.25 2.28'' 0.5'' 0.4oz 0.04'' 0.06'' 143mV/V
D5/100AW ±2.5mm (±0.1'') <±0.5/±0.25 2.72'' 0.5'' 1.1oz 0.04'' 0.04'' 375mV/V
D5/200AW ±5mm (±0.2'') <±0.5/±0.25/±0.1 2.99'' 0.5'' 1.2oz 0.06'' 0.01'' 320mV/V
D5/300AW ±7.5mm (±0.3'') <±0.5/±0.25/±0.1 3.87'' 0.6'' 1.3oz 0.06'' 0.05'' 435mV/V
D5/400AW ±10mm (±0.4'') <±0.5/±0.25 4.31'' 0.7'' 1.6oz 0.05'' 0.05'' 567mV/V
MD5/500AW ±12.5mm (±0.5'') <±0.5/±0.25 5.20'' 0.9'' 1.8oz 0.07'' 0.05'' 773mV/V

Side (radial) exit cable.Connection details
  D1 D2 D3 L2
D5/40AWRA 0.31'' 0.28'' 0.156'' 0.29''
D5/100AWRA to MD5/500AWRA 0.37'' 0.31'' 0.187'' 0.31''
A = 0.3'' (nominal)
CL1 = 0.7''
CL (Cable length). = See specification.
CSL (Cable sleeve length). = See specification.
Type Range Linearity error (% F.S.) L X (nom) Total weight Over-Travel Sensitivity (nom)
Inward over-travel Outward over-travel
D5/40AWRA ±1mm (±0.04'') <±0.5/±0.25 2.34'' 0.5'' 0.4oz 0.04'' 0.06'' 143mV/V
D5/100AWRA ±2.5mm (±0.1'') <±0.5/±0.25 2.72'' 0.5'' 1.1oz 0.04'' 0.04'' 375mV/V
D5/200AWRA ±5mm (±0.2'') <±0.5/±0.25/±0.1 2.99'' 0.5'' 1.2oz 0.06'' 0.01'' 320mV/V
D5/300AWRA ±7.5mm (±0.3'') <±0.5/±0.25/±0.1 3.87'' 0.6'' 1.3oz 0.06'' 0.05'' 435mV/V
D5/400AWRA ±10mm (±0.4'') <±0.5/±0.25 4.31'' 0.7'' 1.6oz 0.05'' 0.05'' 567mV/V
MD5/500AWRA ±12.5mm (±0.5'') <±0.5/±0.25 5.20'' 0.9'' 1.8oz 0.07'' 0.05'' 773mV/V

Specification

Excitation/supply (acceptable)0.5V to 7V rms, 2kHz to 10kHz (sinusoidal) Operating temperature range -4F to 257F
Excitation/supply (calibrated)5V rms, 5kHz (sinusoidal) Maximum pressure when sealed on inner cable with TM0960 250psi
Output load100k Ohms Maximum pressure when sealed on cable sleeve 500psi
Temperature coefficient (span)±0.006% F.S. /F (typical)    

Cable length Standard cable CSL (Cable sleeve length) = 6.6ft, CL (Cable length) = 6.6ft
Maximum cable sleeve length 23ft
Option code TM0828 CSL (Cable sleeve length) = 24'', CL (Cable length) = 24'' to 3281ft
Option code TM0960 CSL (Cable sleeve length) = 2'', CL (Cable length) = 24'' to 3281ft

Options and accessories

TM0315 Operating temperature range (maximum) = 392F  ( (On some models) )
Alternative probe tips for LVDTs
Mounting block
E74 In-Line Signal Conditioning Amplifiers   ( Depending on cable type )
Electronics


All dimensions and specifications are nominal. www.rdpe.com/us/d5w.htm 20170119
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.
 

RDP Electrosense
2216 Pottstown Pike
Pottstown, PA 19465
USA
Tel: 610-469-0850
Tel: 800-334-5838
Fax: 610-469-0852
Email: info@rdpe.com

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