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APCS SI289 Signal Isolator

The APCS SI289 Signal Isolator is an isolating transmitter designed for factory set input output combinations providing true 3-way galvanic isolation up to 2000V rms.

The APCS SI289 Signal Isolator offers reliable 3-way galvanic isolation up to 2000V RMS. It suits fixed input/output setups and helps protect your system from signal interference. Its wide-range AC/DC power supply connects separately to the input and output, using magnetic coupling for full isolation. The unit transfers signals optically, improving accuracy and noise resistance in demanding industrial settings.

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Specifications

Isolation 3-way galvanic isolation, up to 2000V RMS
Configuration Factory-set, fixed input/output combination
Power Supply Wide-range AC/DC, connected separately to input/output
Isolation Method Magnetic coupling (power) plus optical signal transfer
Signal Transfer Optical, for improved accuracy and noise immunity
Mounting DIN-rail mount signal conditioning module
Application Fixed I/O isolating transmitter

Applications

The APCS SI289 Signal Isolator suits fixed input/output setups requiring dependable isolation:

  • Isolating fixed 4-20mA loops between field transmitters and control systems
  • Protecting SCADA/PLC analogue inputs from field-side transients
  • Breaking ground loops on long cable runs to remote instrumentation
  • Providing galvanic separation for factory-configured OEM signal loops
  • Converting AC/DC powered field signals for isolated transmission
  • Reducing noise pickup in electrically noisy plant environments
  • Supplying reliable isolation where input/output ranges are fixed at build
  • Interfacing legacy fixed-range instrumentation with modern control systems

Documents

Hinco Instruments is your authorised APCS distributor in Perth, WA. Contact us for pricing, availability, and technical support.

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