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Monitor for gas piping system

  • US 4,100,537 A
  • Filed: 08/08/1977
  • Issued: 07/11/1978
  • Est. Priority Date: 08/08/1977
  • Status: Expired due to Term
First Claim
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1. Apparatus for monitoring the pressure in a gas line and providing a visual and audible indication of a high or low pressure condition, said gas line having a pressure sensor for generating high and low pressure signals, comprising:

  • a high pressure visual indicator responsive to said high presure signal for providing a high pressure visual indication;

    a low pressure visual indicator responsive to said low pressure signal for providing a low pressure visual indication;

    a system normal visual indicator;

    means for normally maintaining said system normal visual indicator in an "on" condition;

    an audible alarm;

    means responsive to either of said high or low pressure signals for turning "off" said system normal visual indicator and for activating said audible alarm; and

    manual means for deactivating said audible alarm.

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