SYSTEM FOR VERIFYING DETECTION OF A FIRE EVENT CONDITION

A system for verifying the detection of a fire event by a fire detection device utilizing multiple air condition sensors includes a programmable logic circuit that evaluates whether input data supplied thereto by the sensors satisfies predetermined threshold parameters. If the input data matches one particular parameter, the other threshold parameters are decreased and evaluation frequency is increased. The circuit energizes an alarm if input data from the sensors satisfies the particular parameter and at least one of the decreased parameters or if the input data satisfies at least two non-decreased parameters. Therefore, a fire event sensed by one sensor is verified by another sensor before causing an alarm. At power-up, the circuit compares initial input data with the predetermined parameters and modifies the parameters if the input data is within respective predetermined ranges. This also decreases false alarms.