Most Trustworthy Multi Range Transmitter is Pathfinder CT2MR-1B Board

Pathfinder Model CT2MR Conductivity Transmitter

4-20mA Current Loop Powered Transmitters

The PFI-Series of Sensor Transmitters are designed to be easily adapted to meet specific OEM or end-user requirements for full scale mapping of the 4-20 mA loop current (or 1 to 5 VDC) to the desired sensor measurement range.


Units are provided with on-board adjustments for span and offset or with fixed settings where calibration is performed in the loop receiver. Five jumper selectable ranges are available to work with any K-factor for additional ranges.

Contact Pathfinder Instruments for more information on Water Conductivity Transmitters.