G - Physics – 01 – N
Patent
G - Physics
01
N
73/73
G01N 25/18 (2006.01) G01N 27/18 (2006.01) G01N 33/18 (2006.01)
Patent
CA 1103052
Abstract of the Disclosure Detecting conditions related to the heat absorptive characteristics of a surrounding medium by a heated monitoring device exposed for heat trans- ter to the medium, and connected to a restorative energizing electronic circuit that supplies boating power. The restorative circuit responds to differences between the electrical characteristics (e.g. resistance) of the monitoring device containing the monitoring elements and a reference value to vary the power flow through the device and thus to restore the resistance Or the device toward the reverence value. With two or more elements in the device, the elements are heated in unison by the single energizing circuit each element is disposed in a different relationship to the conditions to be discriminated and differences between the individual element electrical characteristics, reflecting differing ? heat l?? the medium provide indications of the various condi? ? ? ? ? is used, the power flow through the overall device c? ? ? ? of conditions of the surrounding medium. Features of the ? ?ying two elements include positioning one element for convect with water and the other element above the oil/water interface to detect a layer of oil if present. Unique circuit arrange- ments are shown that achieve effective thermistor action with an economt of parts and energizing power.
293360
Potter Bronson M.
Smart & Biggar
LandOfFree
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