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Precision Process Signal Isolator

Code: GB-ISO/3

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Provides three way isolation as well as signal conversion if required. Galvanic isolation between the 24 VDC power supply, the input signal and the output signal ensures complete isolation in 24 VDC powered systems. A DC to DC converter isolates the power supply from both the input and output circuitry. The analogue input signal is converted to a frequency signal which is transformer coupled and thus electrically isolated from the output. This frequency output signal is then demodulated and filtered to produce the desired output signal. All inputs are protected against polarity reversal and spikes.
Applications:
Elimination of the effects of ground loops from distributed process signals.

The protection of signals against common mode interferences such as motors, contactors and power line surges.

Process signal amplification in situations where the line impedance is too great to effectively drive the required instrumentation.

Individual channel isolation and the elimination of common mode offsets for non-isolated computer and PLC inputs.
Specifications:
  • Input signal ranges of 0-10 V, ±5 V and 4-20 mA.
  • Input impedance of >1 MΩ for the voltage input and 50 Ω for the current input models.
  • Maximum input signals of 30 V for voltage input and 100 mA for the current input.
  • Output signal range 4-20 mA.
  • Output load >2 kΩ for the voltage output and 500 Ω maximum for the current output.
  • Multi-turn trimpot adjustment for zero and span on the front of the unit.
  • Output zero and span adjustable ±10% of the range.
  • Frequency response 10 Hz.
  • Linearity better than 0.1% of full scale.
  • Input supply 24 VDC ±10%.
  • Power supply current 35 mA.
  • Isolation between input, output and 24 VDC supply >1000 VDC.
  • Operating temperature -10°C to 60°C.
  • 24 hour operational burn-in.
  • Calibration sheet provided for each unit manufactured.
  • DIN rail mounting.
  • Screw terminal connections.
  • Dimensions 25 x 80 x 85 mm (W x H x D).




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