Honeywell 201T, User Manual

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12 201T User Manual
511391
Honeywell
2/07
Determining the Number of Systems
Determining the Number of Systems
The number of transmitters required is determined by a unit’s
operational radius of surveillance. Using the table below, the number of
units required can be easily evaluated.
Several factors can influence the number of transmitters required, such
as: intended use, type of gas and the level of protection required. The
greater the number of transmitters, the greater the level of protection.
Gas Detected
Surveillance
Radius
Area Covered
CO Carbon monoxyde
50 ft (15 m) 7854 sq ft (707 sq m)
NO2 Nitrogen dioxide
Others 23 ft (7 m) 1257 sq ft (154 sq m)