Communications: electrical – Condition responsive indicating system
Patent
1981-10-08
1983-12-20
Crosland, Donnie L.
Communications: electrical
Condition responsive indicating system
340517, 340501, 340518, 340531, 34087017, 340602, 328 3, 328 4, 307116, 307310, 307475, 374132, 374142, G08B 2300, H01N 3500
Patent
active
044220669
ABSTRACT:
Two condition sensors of two entirely different types are selected and monitored by a single condition sensor interface means. The interface means provides for selection of the sensor to be activated, or can be operated in a mode to repetitively sample both sensors. The sensors rely on a hybrid type device utilizing an integrated circuit, discrete components, and a mounting substrate. The sensors may be mounted on the substrate for temperature stability.
REFERENCES:
patent: 3750155 (1973-07-01), Oman
patent: 3891914 (1975-06-01), Akita
patent: 3938144 (1976-02-01), Pederson et al.
patent: 4031528 (1977-06-01), Harrison
patent: 4198625 (1980-04-01), Mande et al.
patent: 4225860 (1980-09-01), Conforti
Technology News "Multifunction Monitor/Alarm IC's", Jim McDermott, vol. 24, No. 14, Aug. 5, 1979.
Belcourt Francis J.
van Dyke Martin J.
Crosland Donnie L.
Feldman Alfred N.
Honeywell Inc.
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