Signal Isolator, Potentiometer/Resistance Input, 4-20mA Out

Name: Signal Isolator, Potentiometer/Resistance Input, 4-20mA Out
Brand: Such.com
SKU: SUCH-SIGNI-WS9020
Price: 89.52 USD
Availability: InStock
Rating: 5.0 (1 reviews)

1 review(s) | Add your review

SKU: SUCH-SIGNI-WS9020

$89.52

● Selectable 2.5/5V excitation ● Four ranges 0‑500Ω to 0‑10kΩ ● ≤10ms response ● 0.2% F.S. accuracy

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Output Signal *

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Overview
Spec
Application
FAQ
Reviews

Overview

This analog isolator accepts potentiometer inputs (0‑500Ω to 0‑10kΩ) with selectable 2.5V or 5V excitation. It outputs 4‑20mA, 0‑20mA, 0‑5V, or 0‑10V. Current load ≤500Ω, voltage load ≥10kΩ. Accuracy 0.2% F.S., response ≤10ms, drift 0.005% F.S./°C. As an analog signal isolator, it offers 1500VAC isolation and ≥100MΩ insulation. This 4‑20mA signal conditioner has single input/output, consumes ≤50mA at 24V, operates -20-55°C. Powered by DC 24V ±10%, DIN-rail mount. Ideal for potentiometer position sensing in industrial controls.

Feature

Excitation voltage: selectable 2.5V or 5V matches potentiometer sensitivities, improving measurement resolution over the 0‑500Ω to 10kΩ range.
Input ranges: four ranges from 0‑500Ω to 0‑10kΩ cover valve, damper, and arm position feedback in one model.
Response time: ≤10 ms (0‑90%, typ.) is 5× faster than typical 50 ms isolators, ideal for servo control.
Accuracy & drift: 0.2% F.S. accuracy with 0.005% F.S./°C drift maintains precision from -20°C to 55°C, reducing recalibration.
Current consumption: ≤50 mA at 24V DC supply with 20 mA output minimizes load, enabling daisy‑chaining multiple units.
Dielectric strength: 1500 V AC/1 min with ≥100 MΩ insulation resistance protects control systems from surges and ground loops.

Dimension (Unit: mm)

Dimensional drawing of signal isolator

Wiring Diagram

Spec

Input Signal (Potentiometer range)	0-500 Ω
	0-1 kΩ
	0-5 kΩ
	0-10 kΩ
Output Signal	4-20 mA
	0-20 mA
	0-5 V
	0-10 V
Excitation Voltage	2.5 V
Excitation Voltage	5 V
Output Load Resistance	For 4-20mA: R_L ≤ 500Ω
	For 0-20mA: R_L ≤ 500Ω
	For 0-5V: R_L ≥ 10 kΩ
	For 0-10V: R_L ≥ 10 kΩ
Basic Accuracy	0.2% F.S.
Response Time	≤10 ms (0-90%) (TYP)
Temperature Drift	0.005% F.S./°C (-20°C - 55°C)
Dielectric Strength	1500 V AC / 1 min (between inputs, outputs, power supplies)
Insulation Resistance	≥100 MΩ (between inputs, outputs, power supplies)
Power Supply	DC 24V, ±10%
Current Consumption	1 in 1 out, 24V supply, 20mA output: ≤50 mA
Operating Temperature Range	-20 - 55°C
Applicable Equipment	Potentiometer
Channel Configuration	Fixed, not selectable: 1 Input / 1 Output

Application

Agricultural Irrigation

Application of signal isolator for shaft positioning, leveling detection, and safety control feedback in elevator and hoisting equipment.

Elevator & Hoist

Rolling Mill

FAQ

Q1: What potentiometer ranges does this unit support, and can I change it later if my sensor specs change? ❯

A: Supports 0‑500Ω, 0‑1kΩ, 0‑5kΩ, and 0‑10kΩ – you select your range when ordering. The unit is factory‑set to your specified range and is not field‑programmable on this model. If you're unsure about your exact resistance, measure your potentiometer's full‑scale value first, then order the matching range.

Q2: What is the difference between 2.5V and 5V excitation voltages, and which one should I choose? ❯

A: 2.5V excitation: Lower power dissipation, better for sensitive or low‑power potentiometers. Generates less self‑heating, which can affect accuracy in tight spots.

5V excitation: Higher signal‑to‑noise ratio, better for long cable runs or electrically noisy environments.

Choose based on your sensor's spec sheet – if your potentiometer is rated for 5V excitation, use 5V. If it's unrated or particularly sensitive, start with 2.5V as the safer default.

Q3: How fast does it respond, and can I use it for valve position feedback in a control loop? ❯

A: Response time is < 10 ms (0‑90% typical) – extremely fast. This makes it perfect for valve position feedback, actuator control, and servo loops where every millisecond counts. Most competing units are 50ms or slower, so this gives you a real edge in time‑critical applications.

1 review(s)

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From: Matthew Prescott | Date: 8/18/2026 9:52 AM

signal isolator potentiometer works as expected

I bought this for a machine project where the potentiometer signal needed to be connected to a controller. The signal isolator potentiometer was easy to wire and the output stayed stable after a few adjustments. The setup was not complicated, but I had to check the input range carefully at the beginning. After that, it has been working without any problems.

Signal Isolator, Potentiometer/Resistance Input, 4-20mA Out

Feature

Dimension (Unit: mm)

Wiring Diagram

Agricultural Irrigation

Elevator & Hoist

Rolling Mill

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