Film Resistor in Exhaust-gas Pipe
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United States of America Patent
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N/A
Issued Date -
Nov 19, 2009
app pub date -
Jun 29, 2007
filing date -
Jun 30, 2006
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A measurement device, in particular anemometric measurement device of a flow sensor, contains film resistors in one or more opening(s) of a cover or a hollow body. The film resistors are fastened according to the invention in the opening(s). Two film resistors differ with respect to their resistance by one to three orders of magnitude.In an anemometric measurement device of a flow sensor according to the invention, a temperature sensor and a heating capacity sensor are placed in a carrier element. The temperature sensor has a temperature-measuring resistor and a heat conductor as platinum thin-film or thick-film resistors on a ceramic substrate.For self-cleaning of an anemometric measurement device of a flow sensor, in which a temperature-measuring element and a heating element are placed in a carrier element, the temperature-measuring element has a platinum thin-film resistor on a ceramic substrate for temperature measurement and is heated with an additional platinum thin-film resistor.For production of an anemometric measurement device of a flow sensor made of film resistors and a cover or a hollow body, two film resistors differing by one to two orders of magnitude are placed in openings of the cover or hollow body and are fastened in the openings.
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