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LINEAR DISPLACEMENT POTENTIOMETER

SIMPLE INSTALLATION,
NO CRITICAL ALIGNMENT,
MINIMUM WEAR UNDER VIBRATION OF MOVING ELEMENT.

Click here to download Datasheet

This range of low cost linear position transducers will provide measurement of the movement of a valve, actuator, damper, or any other moving device, and provide a current, voltage or resistive feedback signal proportional to position.

The transmitter uses a potentiometer as the variable element. A coated steel wire is wound onto a pulley wheel with a constant force spring arrangement for cord retraction. The construction provides a measure of damping if the anchor point of the wire is subject to vibration, and obviates mechanical wear if the motion is out of line with the potentiometer.  It is very simple to fit.  Bolt the case to the static element and hook the cord end on to the moving element.

Standard Features

  • Constant force return spring even up to the longest pull version.

  • Ceramic brush for the cord exit to reduce wear, miss-alignment of cord up to 30 degree.

  • Rolling bearings on internal component to extend life and decrease stiction (except low cost OEM position transducer).

  • 3 wire potentiometric (1 kOhm standard, other values available).

  • Nylon coated S/Steel pull cord.

Options

  • Alternative pull cord materials, e.g. braided stainless steel, Kevlar.

  • Pull cord extensions for mounting at a distance form the subject.

  • Various end fittings can be supplied, e.g. split ring, snap link, anti-rotation swivel.

  • Electrical plug and socket can be supplied.

  • Armoured cable for harsh environments.

  • Custom brackets and pulleys to suit client's application (we will design to your needs).

  • Non-standard pull lengths.

  • Integral 4-20 mA 2-wire transmitter, or 0-10 V 3-wire transmitter.

  • The transmitter versions have span and zero calibration adjustments built in.

  • The transmitter electronics are also available as a stand-alone device to bring the span and zero adjustments to a convenient location away from the linear displacement transducer, e.g. in a safe area.

Nominal travel (mm)  35   75  150 300 500 1000 1250
Potentiometer type
CP = Conductive Plastic
WW = Wire Wound
CP CP WW WW WW WW WW
Standard Resistance overall 1K 1K 1K 1K 1K 1K 1K
Linearity better than (%)  2 2 1 1 1 1 1
Repeatability (typical)(%) 0.1 0.1 0.1 0.1 0.1 0.1 0.1

Standard Industrial Linear Potentiometer
Available as: 3 wire potentiometric or 2 wire 4-20mA current loop, 3 wire 0-10V, both with adjustable Span and Zero.
Measuring ranges: from 35mm to 1250mm.
Size (mm): 140 long (inc. feet), 65 wide, 56 high.
Sealed to IP55.

Standard Industrial Linear position transducer.
Shown with 2 wire 4-20mA current loop and armoured cable.

Standard Industrial Model, click for larger image.
 Shown with 2 wire 4-20mA current loop, nylon coated stainless steel cord with split ring connector and optional plug & socket electrical connector.


 

Industrial Linear Potentiometer - Extended Stroke
Available as: 3 wire potentiometric or 2 wire 4-20mA
current loop, 3 wire 0-10v, both with adjustable Span and Zero.
Measuring ranges: from 1300mm to 1650mm.
Size (mm): 170 long (inc. feet), 102 wide, 76 high. 
Sealed to IP55.

Linear position transducer - Extended stroke, click for larger image. 
Shown with 3 wire potentiometer, nylon coated stainless steel cord with split ring connector and standard PVC electrical cable.



Industrial Linear Potentiometer - Long Stroke

Available as: 3 wire potentiometric or 2 wire 4-20mA current loop and 3 wire 0-10v, both with adjustable Span and Zero.
Measuring ranges: from 1500mm to 5000mm (to 10000mm in larger case).
Size (mm): 222 long (inc. feet), 122 wide, 56 high, (106 larger case).
Sealed to IP55.

Position transducer - Long stroke, click for larger image.
Shown with 2 wire 4-20mA, nylon coated stainless steel cord with latched hook connector and standard PVC electrical cable. Shown with clear display lid.



Low Cost OEM Active Open Frame Linear Potentiometer
Available as: 2 wire current loop and 3 wire 0-10v, both with adjustable Span and Zero.
Measuring ranges: from 20mm to 800mm.Size (mm): 100 long, 52 wide, 52 high. 
Position transducer - OEM Active, Click to display larger image.
Shown with Kevlar non-kink cord and latched hook connector.

NOTE: Minimum order quantity applies for OEM models.



Low Cost OEM Passive Open Frame Linear Potentiometer
Available as: 3 wire potentiometric.
Measuring ranges: from 20mm to 800mm.
Size (mm): 90 long, 52 wide, 52 high. 
LDP - OEM Passive, Click to display larger image.
Shown with stranded stainless steel cord and latched hook connector.

NOTE: Minimum order quantity applies for OEM models.


 

Contact Information: e-mail to info@jkcontrols.co.uk, or telephone +44 1732 522353

Registered Address: JK Controls Ltd, The Barn, 65 High Street, East Malling, Kent, ME19 6AJ.  Reg. No. 3073964

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