Thermocouple Input, Field Configurable Isolator
Provides an Isolated, Linearized DC Output in Proportion to a Thermocouple Input

  • Easy Field Configurable Input Ranges for J, K, T, R, S, E, and B Type Thermocouples
  • Eliminates Ground Loops with 1800VDC Input-to-Output Isolation
  • Five Field Configurable Output Ranges: 0-5V, 0-10V, 0-1mA, 0-20mA and 4-20mA
  • Ultra Slim 17.7mm Housing Mounts on DIN Rail for High Density Installations
  • Flexible Power Supply Accepts 9 to 30VDC
  • ASIC Technology for High Reliability
  • Lifetime Warranty
  • Datasheet

The G428 is a DIN rail mount, thermocouple input signal conditioner with 1800VDC isolation between input, output and power. The field configurable input and output offer flexible, wide ranging capability for J, K, T, R, S, E and B type thermocouples.

The input of the G428 can be configured for over 60 different thermocouple temperature ranges (see Table 6). The output is linear to temperature and can be set for either 0-5V, 0-10V, 0-1mA, 0-20mA or 4-20mA.

For an RTD and thermocouple input temperature transmitter with improved accuracy and stability, see Action I/Q model Q488. PC or DIP switch programmable.

Wide ranging, precision zero and span pots allow 50% adjustablity of offset and span turn-down within each of the ranges. For example, the 0-1000°C range could be offset and turned down to provide a 4-20mA signal representing 500-1000°C. Similarly, adjustment can be referenced to the output range. The example from above could be used to provide a 12-20mA signal from a 750 to 1000°C temperature input.


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