Measuring and testing – Volume or rate of flow – Thermal type
Patent
1992-12-03
1994-06-21
Goldstein, Herbert
Measuring and testing
Volume or rate of flow
Thermal type
7320426, G01F 168
Patent
active
053219830
ABSTRACT:
In a method of correcting temperature characteristics of a flow velocity sensor, the flow velocity sensor having a heater and a pair of temperature-measuring sensors arranged on both sides thereof is set such that the temperature-measuring sensors are located at upper and lower vertical positions along the flow of a target gas to be measured. A difference in self-heat amount is set between one of the temperature-measuring sensors, located on an upstream side of the flow of the gas, and the other temperature-measuring sensor located on a downstream side of the flow of the gas.
REFERENCES:
patent: 3938384 (1976-02-01), Blair
patent: 4693116 (1987-09-01), Miura et al.
patent: 4825693 (1989-05-01), Bohrer et al.
patent: 5036701 (1991-08-01), Graff
Goldstein Herbert
Yamatake-Honeywell Co. Ltd.
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