| 摘要 |
PROBLEM TO BE SOLVED: To attain the first object that a timing for monitoring consumption of gas between a gas demand monitor device and a gas meter can be synchronized and the second object that a setting of alert condition or the like can be customized in compliance with a trend of gas consumption of consumers.SOLUTION: A gas demand monitor device 10 comprises a clock circuit 11 for counting a demand time limit; a clock operating part 12 for receiving a meter synchronizing operation and resetting a time counting of the clock circuit 11; an alert condition setting part 14 for receiving and storing one operation for dividing the demand time limit into a plurality of time zones and the other operation for setting an alert condition and an alert releasing condition based on a gas accumulated value in regard to at least one of the divided time zones; and an alert control part 15 monitoring the establishment of the alert condition and alert releasing condition for every prescribed time and starting a display of demand alert if a prescribed surplus time elapses while the alert releasing condition is not being established after the alert condition is established.SELECTED DRAWING: Figure 1 |
