Ammonia Gas Detector Installation
At what height should ammonia gas detectors be installed?
Ammonia is lighter than air and will collect on the ceiling (or the highest point in the room). Therefore, gas detectors/sensors should be installed on or in the ceiling.If you install the detector at breathing height (1.2-1.8 m / 4-6 ft above the ground), the ammonia concentration will move downward from the ceiling. With more and more leakage and accumulation in high places. When ammonia levels reach breathable heights, the room is filled with ammonia. This is not only a breathing hazard, but also an explosion/fire hazard. Not to mention the high cost of losing all that ammonia. Our goal is to be alerted to an ammonia leak as soon as possible. So that safety measures can be taken to stop and repair leaks.
NOTE: In the presence of moisture (e.g., high relative humidity), ammonia forms a vapor that is heavier than air and may spread along areas of poor air flow where people may come into contact.
Where should gas detectors be installed in the ceiling?
Ammonia gas detectors should be placed on a ceiling with good air circulation, but away from ventilation fans, openings to the outside, and out of fast-moving air paths. It also should not be placed in a dead area where there is little or no air movement. Ideally, sensors should be placed as close to the air source as possible, above compressors, generators and valves, to ensure early detection.
How Often Should Ammonia gas sensors Be Bump Tested?
Ammonia gas detectors should be bump tested at least monthly as part of the equipment's monthly maintenance program. There is no limit to the number of crash tests; they may be done more often, depending on comfort/confidence in the app and device and how it responds. If the bump test fails, a full calibration should be performed. The bump test date and results should be recorded in the logbook.