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String pots by seriesReplacement reviewWiring guideQuote / STEP ↗

STRING POTS BY SERIES / SPS-PT

Heavy-Duty Industrial Cable & Rope Potentiometers

Long-stroke cable potentiometers for industrial displacement measurement. Select the electrical interface and mechanical working travel separately, then confirm environmental limits against the application.

10″–200″ (254–5,080 mm)

Configure SPS-PT / Request STEP →
SPSLINEAR TRAVEL3-WIRE SIGNALSWIVEL BASE
Series concept illustration; dimensions subject to drawing review.

Stroke selection

Nominal inch selections with calculated metric equivalents. Confirm the supplied unit’s electrical and mechanical travel.

10″ (254 mm)20″ (508 mm)30″ (762 mm)40″ (1016 mm)60″ (1524 mm)80″ (2032 mm)100″ (2540 mm)150″ (3810 mm)200″ (5080 mm)

Electrical interface

500Ω / 1kΩ / 5kΩ / 10kΩ; conditioned 0–10V or 4–20mA by configuration

Application focus

Hydraulic presses, lifting platforms, gates and industrial test stands

BEFORE THE DRAWING IS RELEASED

Three checks for your configuration

  1. Working stroke versus mechanical reserve and permitted overtravel
  2. Housing, cable material, ingress requirement and operating temperature
  3. Loop supply, load resistance or voltage-output loading

Original model review: Celesco PT1A / PT5A / PT8000 / PT9101, UniMeasure P510 / HX. Comparison candidates require mechanical and electrical verification; no universal drop-in equivalence is implied.

THREE WIRES. ONE POSITION SIGNAL.

Passive voltage-divider wiring reference

A passive string potentiometer uses three electrical connections. The wiper voltage follows string travel as a proportion of the excitation voltage.

Ideal relation: Vout ≈ Vexc × x / L. At 50% travel and 5V excitation, an ideal zero-offset output is 2.5V.

Illustrative colors only. Confirm the exact model pinout, maximum excitation and power rating. Do not apply 24V unless the specified unit permits it. Conditioned voltage and two-wire current-loop models need their own wiring diagram.

Wire 1 · Red · +V excitationWire 2 · Wiper → DAQWire 3 · Black · 0V common
White/green wiper is a diagram convention, not a universal M12 pin assignment.

WORKING AROUND A BACKORDER?

Start with the exact original part number.

Send the model, stroke and drawing. Compare the SPS configuration, mounting and electrical interface before committing to an alternative. Current availability and lead time are confirmed in your quote.

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SPECIFY YOUR MEASUREMENT

Request a quote & configuration drawing

Tell us the stroke, signal and installation. We will review the configuration, availability and STEP request together.

Complete your measurement chain

Optional accessory budget in USD, subject to configuration and quotation. Sensor, shipping and tax are quoted separately.

Selected accessory budget $197

By sending, you agree that SPS Linear Telemetry may use these details to respond to your request. Privacy policy.

Explore the other string pot series

01 / SPS-SP2↗

Compact string pots

2″–50″ (50.8–1,270 mm)

Suspension travel, pedal movement and hydraulic test rigs

Explore configuration →
02 / SPS-MIN↗

Subminiature wire pots

1.5″–10″ (38.1–254 mm)

Structural deflection fixtures, crash-test development and compact robotics

Explore configuration →
03 / SPS-PT↗

Industrial cable potentiometers

10″–200″ (254–5,080 mm)

Hydraulic presses, lifting platforms, gates and industrial test stands

Explore configuration →
04 / SPS-WET↗

Motorsport string pots

5″–50″ (127–1,270 mm)

Baja / off-road suspension development and wet test fixtures

Explore configuration →
05 / SPS-DSP↗

Digital readout kits

1.5″–200″ (38.1–5,080 mm)

Laboratory benches, hydraulic fixtures and code-free position readout

Explore configuration →
SPS ///

SPS Linear Telemetry
String potentiometers for instrumented motion.

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