G - Physics – 01 – M
Patent
G - Physics
01
M
340/145
G01M 3/32 (2006.01)
Patent
CA 1232958
ABSTRACT OF THE DISCLOSURE Leakage from a gasoline storage tank or other recep- tacle is detected by differentiating the output from a liquid- level monitoring transmitter with stepped voltage output and applying the differentiated transmitter signal through an am- plifier to a latch controlled relay for activating an alarm. An interlock circuit is provided for deenergizing the detector part of the system whenever the contents of the tank is being altered intentionally.
453657
Smart & Biggar
Transamerica Delaval Inc.
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