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Action ULTRA SLIMPAK® G438-0001 Potentiometer Input Field Configurable Isolator

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

  • Potentiometers from 100 Ohms to 100K Ohms
  • Wide Ranging Zero & Span Adjustability
  • 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 G438 is a DIN rail mount, potentiometer input signal condi- tioner with 1800VDC isolation between input, output and power. The input provides a constant voltage and is designed to accept any three-wire potentiometer from 100 Ohms to 100K Ohms. The field configurable output is switch selectable providing either a 0-5V, 0-10V, 0-1mA, 0-20mA or 4-20mA DC signal.

Wide ranging precision zero and span pots used in conjunction with DIP switches allow 80% adjustablity of offset and gain to transmit a fullscale output from any 20% portion of the potenti- ometer input.

The G438 is useful in transmitting process control setpoints to remote PID controllers or interfacing position sensors to data acquisition and control systems. The high density DIN rail mounting offers an extremely compact solution for saving valu- able panel space.

In a valve positioning application a potentiometer is sometimes used as a feedback signal. Quite often a wide open valve is only a 25% turn of the feedback potentiometer. In a case such as this, the G438 can easily be adjusted with the zero and span to provide a fullscale output signal (e.g. 4-20mA) representing 0-25% or even 50-75% of the potentiometer input.

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CTH Controls Inc.   CTH Controls Inc.
6-1500 Upper Middle Rd. W. Suite 220
Oakville, ON, Canada, L6M 0C2
Phone: 905-792-6829
Toll Free: 1-888-550-6829
Fax: 905-792-6902
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