Sensor Mounting Location
The best location for the transmitter and the sensor may not be the same location. Sensors should be placed in a location where a gas leak is most likely to be detected. When the best sensor placement would not allow the transmitter display to be easily viewed or accessed, a remote junction box can be used to mount the sensor remotely from the transmitter, allowing both to be installed in the optimum location.
Two main factors should be considered when choosing a sensor location. The first is the density of the target gas relative to the air. Gases, such as propane, that are heavier than air should be placed near ground level while gases that are lighter than air should be placed above potential leak sources.
Optimum sensor placement will depend on the surrounding processing equipment, such as pipes, valves, or turbines. MSA offers a fire and gas mapping service that systematically evaluates potential sources of leaks and recommends detector quantity and placement to create the most effective detection system.