Gas flow rate measuring apparatus

Details Gas flow rate measuring apparatus Gas flow rate measuring apparatus

1981-10-20

1984-09-18

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

Thermal type

G01F 168

Patent

active

044716559

ABSTRACT:
An apparatus for measuring the flow rate of a gas wherein resistance wires whose resistance value changes in accordance with temperature are arranged in a flow rate measuring tube providing a path of a gas to be measured, a voltage is applied to the resistance wires to detect the change in resistance value of the resistance wires due to the change in temperature thereof in accordance with the gas flow rate, and the flow rate of the gas is measured. In order to support the resistance wires in the flow rate measuring tube, the support members for supporting the resistance wires have respectively two support rods provided with grooves at positions corresponding to the turning points of the resistance wires wound thereon so that the resistance wires are supported stably lying in the grooves.

REFERENCES:
patent: 1902427 (1933-03-01), Sawyer
patent: 3246515 (1966-04-01), Martino
patent: 3648518 (1972-03-01), Han et al.
patent: 3677085 (1972-07-01), Hayakawa
patent: 3975951 (1976-08-01), Kohama et al.
patent: 4011756 (1977-03-01), Lemos
patent: 4244217 (1981-01-01), Ledbetter
patent: 4357830 (1982-11-01), Kohamaa et al.

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