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Action TRANSPAK™ T752 Potentiometer Input Isolating, Field Configurable Two-Wire Transmitter

Provides an Isolated Current Loop in Proportion to a 3-Wire Potentiometer Input.

  • Accepts 0-50 Ohm to 0-200k Ohm Potentiometers
  • Protects Equipment with 600V Input-to-Output Isolation
  • Eliminates Ground Loops
  • Wide Ranging Zero and Span Adjustability
  • FM Safety Approval for Hazardous Installations



The T752 accepts potentiometer inputs from 0 to 50 Ohms to 0 to 200k Ohms (end to end). The T752 provides 600 VDC of isolation with outputs of either 4-20mA or 10-50mA which are field selectable via top accessed DIP switch. The current outputs are in proportion to the potentiometer input. Urethane coating of internal circuitry for protection from corrosive atmospheres is included as standard.

The T752 has 80% zero and span adjustability within the input range of the potentiometer. This allows the user to field calibrate the unit for a wide variety of input spans from the maximum (100%) down to any minimum (20%) span (e.g., 4% to 24%) as long as the adjusted span remains within the input range of the potentiometer.

The T752 is useful in any application requiring isolation of a 2-wire loop current from a 3-wire potentiometer. Typical applications include tank level data acquisition and position sensor conditioning. The output of the T752 can be used to drive a digital meter for direct display or interface with a computer for monitoring or control.

The T752 is FM approved for intrinsically safe operation in Class I, Division 1, Groups A, B, C, and D; Nonincendive Class I Division 2, Groups A, B, C and D, and Classes II & III, Division 2, Group G hazardous locations when installed per manufacturer's drawing 790-0024-00.

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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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