DEVICE AND METHOD FOR AUTOMATICALLY SWITCHING AND SETTING ALARM DELAY TIME OF GAS LEAK ALARM

PROBLEM TO BE SOLVED: To detect presence/absence of connection based on interlock with a gas meter and to automatically change setting of alarm delay time of a gas leak alarm when connection is detected.SOLUTION: This device for automatically switching and setting the alarm delay time of the gas leak alarm is constituted of: an unconnected detection signal detection part 1 which detects an unconnected detection signal to be periodically transmitted from the meter; a power source answer request signal detection part 2 which detects a power source answer request signal to be periodically transmitted from the meter; a meter connection presence/absence determination part 3 which determines presence/absence of the interlock connection with the gas meter based on a detection of the unconnected detection signal, or the power source answer request signal; and an alarm delay time setting output part 4 which automatically sets the alarm delay time corresponding to interlock connection to be output by output of the meter connection presence/absence determination part 3.