Pathfinder EMIT-pH

The Model EMIT-pH (encapsulated miniature isolated transmitter) is a 2-wire, 4-20 mA pH transmitter featuring input to output isolation, high performance and small size. 

The transmitter accepts as its input any pH probe via a BNC coaxial connector. It transforms the probe signal to a 4 to 20mA current proportional to the pH level. 

This output may be transmitted over two wires to a control location, the same 2 wires provide power to the transmitter. Any D.C. power supply from 12 to 36V may be used. 

There are two adjustments on the transmitter to calibrate probes for “SPAN” and “ZERO”. 

The output can be monitored with a loop powered meter, a load resistor or a multi-meter during operation.