RKI Replacement Phosphine (PH3) Sensor for the or SC-04 Series Single Gas monitor. The PH3 sensor has a range of 0-20.00 ppm. When ordering an individual sensor, make sure to also order the at the same time. The PH3 sensor utilizes a humidity filter to prevent unstable readings around 0 ppm.

To replace the sensor to a or SC-04 Series Single Gas Monitor, the instrument firmware will need to be updated. This can be done by using the and following the .

Reprogramming the GX-3R Pro firmware:

Note: H2S and PH3 is not a practical combination. If you already have H2S installed in your , you will need to turn that channel off. Instructions for how to turn off a channel can be found in the "Changing the Gas Combination" section of the GX-3R Pro manual.

Part Number:
ESR-A13D-PH3