MST Sensor PH3 0-1.00 ppm 2El.
All Honeywell Analytics electrochemical sensor cells are amperometric type i.e. fuel cell type acting like batteries, where one component required to generate a current is missing: The gas to be detected (target gas). The target gas diffuses through a gas permeable membrane into the sensor where an electrochemical reaction results in a low current that is directly proportional to the measured gas concentration (generally a nA/ppm reading).
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