Thermal flowmeter with temperature compensation

Details Thermal flowmeter with temperature compensation Thermal flowmeter with temperature compensation

1982-10-07

1984-10-09

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

Thermal type

731182, G01F 168

Patent

active

044753888

ABSTRACT:
A method for measuring the flow rate of fluid such as liquified petroleum gas fuel for an automobile fuel. A signal of the fluid flow rate and a signal of the fluid temperature are produced by using the signals from an electric heater and a first, second, and third temperature-dependent resistors in a signal processing circuit. The produced signals are supplied to a computer circuit to carry out modification, linearization, and multiplication by a conversion constant for linearization which is corrected regarding temperature characteristic. The result of calculation in the computer circuit is displayed on a display device.

REFERENCES:
patent: 3891391 (1975-06-01), Boone
patent: 3987788 (1976-10-01), Emil
patent: 4276773 (1981-07-01), Kawai et al.

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