Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1988-02-09
1989-11-21
Yusko, Donald J.
Communications: electrical
Condition responsive indicating system
Specific condition
73 1G, 73 1R, 422 83, 422 98, G08B 1710
Patent
active
048825760
ABSTRACT:
A combustible gas sensor with a calibration test adaptor. A standard combustible gas sensor attached to a transmitter in transmitter housing has a body portion attached thereto which is adapted to receive and slowly distribute test gas in the vicinity of the combustible gas sensor. A flexible bladder fastened to the main body portion receives the test gas, inflates, and slowly releases the test gas through a sintered stainless steel plug mounted in one end of the flexible bladder.
REFERENCES:
patent: 4384925 (1983-05-01), Stetter et al.
patent: 4590789 (1986-05-01), Kunze
patent: 4630038 (1986-12-01), Jordan
Bode George A.
LaHaye D. Neil
Queen Tyrone
Yusko Donald J.
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