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Process Signal Isolator and Power Supply

Code: GB-ISO/2

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Designed to provide a convenient way of powering and isolating process signal inputs. Provides isolated power to two, three or four wire transducers and isolates the resulting measurement signal. Protect the input cards of PLCs while at the same time providing power to the loop providing a high level of system security by isolating and powering each input. In contrast to single power supply systems, should one transducer short the 24 VDC supply, only one measurement is lost and not all of those powered from the common 24 VDC supply.
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.
  • Input signal range 4-20 mA.
  • Input voltage drop of 6 V.
  • Output signal ranges of 4-20 mA and 0-20 mA.
  • Output load 500 Ω maximum.
  • 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 1 Hz.
  • Linearity better than 0.5% of full scale.
  • Input supply 230 or 115 VAC ±10%.
  • Input power surge and fuse protected.
  • Isolation between input, output, 24 VDC auxiliary supply >1,500 VAC.
  • 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 40 x 80 x 85 mm (W x H x D).


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