Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1984-12-14
1986-10-21
Rowland, James L.
Communications: electrical
Condition responsive indicating system
Specific condition
73 40, 73 492, 340518, 340632, G08B 2100
Patent
active
046188550
ABSTRACT:
A soil pollution monitoring system includes a plurality of ducts for conveying gases and air past a sensing device. The sensing device detects selected compounds in the gases and air and provides an output in electrical form which indicates whether or not the levels of certain compounds in the gases and air are greater than a threshold amount thereby indicating that a leak has occurred.
REFERENCES:
patent: 3209343 (1965-09-01), Dunham et al.
Harding Robert C.
Olsen Edward H.
Genelco, Inc.
Myer Daniel
Rowland James L.
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