Frequency output type hot-wire flow meter

Details Frequency output type hot-wire flow meter Frequency output type hot-wire flow meter

2006-11-28

2006-11-28

Patel, Harshad (Department: 2855)

Measuring and testing

Volume or rate of flow

Thermal type

Reexamination Certificate

active

07140246

ABSTRACT:
According to the invention, to correct the curvature characteristic in output due to individual differences between frequency output type hot-wire flow meters, a frequency output type hot-wire flow meter includes a heating resistor disposed in the measurement target fluid and a voltage frequency conversion circuit for converting the air flow rate voltage signal that is proportional to the current flowing through the heating resistor. The voltage frequency conversion circuit converts the air flow rate voltage signal non-linearly to generate the output frequency.

REFERENCES:
patent: 4334186 (1982-06-01), Sasayama et al.
patent: 5525040 (1996-06-01), Andreae et al.
patent: 2003/0041664 (2003-03-01), Ariyoshi
patent: 0240637 (1987-10-01), None
patent: 1118842 (2001-07-01), None
patent: 1338871 (2003-08-01), None
patent: 55-104719 (1980-08-01), None
patent: 6-160141 (1994-06-01), None
patent: 8-015339 (1996-01-01), None
patent: 08-062012 (1996-03-01), None
patent: 08-094406 (1996-04-01), None
patent: 11-190647 (1999-07-01), None
patent: 11-337382 (1999-12-01), None
patent: 2002-168670 (2000-06-01), None

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