Method and apparatus for detecting abnormality in gas supply equ

Details Method and apparatus for detecting abnormality in gas supply equ Method and apparatus for detecting abnormality in gas supply equ

1993-10-05

1996-09-10

Peng, John K.

Communications: electrical

Condition responsive indicating system

Specific condition

340605, 340606, 340611, 340632, 73 405R, 7386119, 137557, G08B 2100

Patent

active

055549764

ABSTRACT:
An abnormality detecting apparatus constantly monitors even a slight amount of gas which has leaked by checking a gas supply pipe when it is determined that the pressure regulating function of a pressure regulator is abnormal. The abnormality detecting apparatus detects an abnormality of the regulated pressure of a pressure regulator appropriately by comparing the regulated pressure with a predetermined low value of a pressure regulating range when the gas flow rate is high and with a predetermined high value of a pressure regulating range when the gas flow rate is low.

REFERENCES:
patent: 4269061 (1981-05-01), Hatsuno et al.
patent: 4797666 (1989-01-01), Baxter et al.
patent: 4915613 (1990-04-01), Landis et al.
patent: 5057822 (1991-10-01), Hoffman
patent: 5261268 (1993-11-01), Namba

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