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Action ULTRA SLIMPAK® G428-0001 T/C Input Field Configurable Isolator

Provides an Isolated, Linearized DC Output in Proportion to a Thermocouple Input.

  • Field Configurable Input Ranges for J, K, T, R, S, E, and B Type Thermocouples
  • Eliminates Ground Loops
  • Field Configurable Output Ranges: 0-5V, 0-10V, 0-1mA, 0-20mA and 4-20mA
  • Ultra Slim Housing for High Density Installations
  • Flexible Power Supply Accepts 9 to 30 VDC
  • ASIC Technology for Enhanced Reliability
  • RoHS Compliant


The G428 is a DIN rail mount, thermocouple input signal condi- tioner 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 G428 input can be configured for over 60 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.

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 above could be used to provide a 12-20mA signal from a 750 to 1000 C temperature input.

Three way isolation in the G428 completely eliminates ground loops from any source. Isolation protects expensive SCADA systems from ground faults and allows the noise reduction benefits of grounded thermocouples to be realized.

The G428 is equipped with cold junction compensation (CJC) circuitry to provide ice-point reference. Upscale or downscale thermocouple burnout detection is switch selectable.

High density DIN rail mounting offers an extremely compact solution to save valuable panel space.

Click here for the complete information in .pdf format


CTH Controls Inc.   CTH Controls Inc.
5100 South Service Road, Unit 2
Burlington, ON. L7L 6A5 Canada
Phone: 905-792-6829
Toll Free: 1-888-550-6829
Fax: 905-792-6902
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