Application Data Sheet |
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C. Place sensors close to possible sources of gas leaks. This includes gas cylinders, any device using gas, valves, fittings, flanges, pump seals, pressure vessels, tubing jungles and gas infusion from the ground or other routes.
D. Place sensors for use as area monitors. Area monitors are used as backup to sensors located close to the source of a leak and to monitor sources that are not fixed such as cars in a parking garage.
E. Place sensors in areas where gas might accumulate. These areas include above false ceilings, in stairwells, gratings, storage cabinets and other locations where gases might migrate due to their density and/or might not be subject to ventilation typical of the area.
F.Place toxic gas and oxygen deficiency sensors in the “breathing zone” in addition to areas defined above. The breathing zone is typically
Other Considerations
After location is determined based upon
Some gases can be both combustible and toxic. Typically, the toxic levels are much lover than the LEL levels.
The proper concentration to be monitored
is determined by the user. For example, in a usually unmanned area, a user may want to monitor for the gas at LEL levels because of the concern of an explosion.
In some cases, the true gas risk is the displacement of oxygen rather than the presence of the toxic gas. In such cases, it is best to install an oxygen deficiency sensor module to protect the personnel.
Sierra Monitor Corporation 1991 Tarob Court Milpitas, California 95035 (408)
