Failure sensor for a gas detector

Details Failure sensor for a gas detector Failure sensor for a gas detector

1978-08-08

1981-05-12

Karlsen, Ernest F.

Electricity: measuring and testing

Conductor identification or location

Inaccessible

324 52, 324 71SN, 340634, G01R 3108, G01R 2702

Patent

active

042675057

ABSTRACT:
A failure sensor for a gas detector comprises a direct current amplifier having a feed-back path between its output and its input. The feed-back path includes a negative feed-back circuit. A connection is provided in the feed-back path for connection to a gas detector and is arranged to influence the feed-back factor. There is also provided a sensor for sensing differential voltage between the connection and the feed-back path and the output of the amplifier and for providing an output signal indicative of a fault condition where a predetermined differential value occurs.

REFERENCES:
patent: 3573647 (1971-04-01), Antoniou
patent: 4007456 (1977-02-01), Paige et al.

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