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Sensor Positioning

Factors influencing sensor positioning

"To detect gas in those locations so that any gas build-up is detected prior to the formation of an explosive, toxic or asphyxiating concentration". EN50073

Personnel to be involved:

-process engineer
-health and safety officer
-manufacturer or his representative
-instrument engineer


Factors that influence the locating of sensors:

-indoor or outdoor location
-potential release location/s of the gas/es
-Vapour density of the gas
-Air flows
-release rate of the gas
-is the gas source likely to be under pressure?, possible jet formation and or will the gas density be changed
-gas temperature – its impact on volatile liquids
-ventilation: natural or mechanical
-plant layout/structural arrangements and their effect on gas accumulation
-thermal effects caused by temperature hotspots
-wind speed and direction effecting outdoor location
-impact of adverse weather conditions on sensors in outdoor locations
-consideration to service engineers for access to sensors during routine calibration

 

 

 




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