REMOTE MONITORING SYSTEM FOR GAS SUPPLY PRESSURE

摘要

PROBLEM TO BE SOLVED: To reduce the number of call times and to shorten communication time until a center side obtains required pressure data which becomes the history of pressure fluctuation before the occurrence of abnormality after pressure abnormality occurs, to eliminate the need of a trouble until the center-side obtains pressure data and to simultaneously and easily process plural pressure abnormalities. SOLUTION: The inlet pressure and the outlet pressure of a governor 2 are converted into electric signals by pressure sensors 3 and 4 and are inputted to a digital self-registering pressure gage. The signals are sampled, are A/D- converted and are stored in a memory. When pressure abnormality occurs, pressure data including the history of pressure fluctuation for prescribed time is added to alarm information and it is sent to a center device 7 by a telephone line 9 from a communication unit 6 through a base station 10. A personal computer 8 graphs the time lapse of pressure data and displays it with the content of alarm information and a governor name and assists the judgment of a worker.