Robert G Schermeister

US Patent:

20070296569, Dec 27, 2007

Filed:

Jun 22, 2006

Appl. No.:

11/425945

Inventors:

William J. Bray - Minneapolis MN, US
Adrienne G. Thomle - Plymouth MN, US
Donald L. Harju - Brooklyn Park MN, US
Mark B. Panzer - Plymouth MN, US
Robert G. Schermeister - Champlin MN, US

Assignee:

HONEYWELL INTERNATIONAL INC. - Morristown NJ

International Classification:

G08B 29/00

US Classification:

340506

Abstract:

A sensor and alarm system having a power-on sequence. The system has a power supply permanently-like connected to a power line of a facility. There may be a power interrupt to the power supply, which may initiate a power-on sequence of alarms. The sequence of alarms may indicate whether the system is wired properly and operating normally. If the sequence does not occur in a pattern as expected, then there may be a problem with the system. Also, the sensor portion of the system may set off an alarm pattern if a sensed gas has a concentration greater than a first magnitude. The system may set off another alarm pattern if a sensed gas has a concentration greater than a second magnitude. If a sensing element of the sensor portion goes out of calibration, then the system may set off still another alarm pattern.