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Signal Isolator

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Input type
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Input range
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Required output
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Power supply
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Accuracy requirements

How signal isolator work

A signal isolator receives an electrical signal from a field transmitter or sensor, electrically separates it from the downstream circuit and reproduces it as a standard output signal. 

SUPMEA isolators provide three-way isolation between input, output and power, helping improve anti-interference capability and system stability. Depending on the model, they can accept current or voltage inputs, power 2-wire or 3-wire transmitters, and provide standard current or voltage outputs for PLC, DCS or other instruments. Temperature isolators can convert thermocouple or RTD signals into isolated analog outputs. This separation helps break ground loops, reduce common-mode interference and protect connected equipment. DIN-rail designs support compact installation in control cabinets in process systems.

Applications & Industries

Frequently Asked Questions

What does a signal isolator do?

A signal isolator electrically separates a field signal from the receiving circuit while reproducing the measurement as a standard output. This helps reduce interference, break ground loops and protect connected equipment.

The available input types depend on the model and include standard current, voltage, thermocouple, RTD and mV signals.

Yes. Selected models can convert current or voltage inputs into standard current or voltage outputs. Temperature models convert thermocouple or RTD signals into standard outputs.

Selected current-input models provide isolated operating power for 2-wire and 3-wire transmitters. Confirm the transmitter type and distribution-voltage requirement during selection.

It means the input, output and power-supply circuits are electrically separated from one another, helping improve anti-interference performance and system stability.

Yes. Selected SUP-1000S-series models are offered with single- or dual-output configurations.

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