Hot-electrical-resistance type gas flow meter and internal combu

Details Hot-electrical-resistance type gas flow meter and internal combu Hot-electrical-resistance type gas flow meter and internal combu

1991-03-04

1993-08-03

Goldstein, Herbert

Measuring and testing

Simulating operating condition

Marine

732025, 73203, G01F 168

Patent

active

052318710

ABSTRACT:
An object of the present invention is to provide a hot-electrical-resistance type gas flow meter wherein a deterioration of a gas-cooled hot-electrical-resistance is prevented at the maximum flow rate, a decrease of sensitivity is prevented at the minimum flow rate and a wide dynamic range is achieve, and a structural feature of such gas flow meter is that the gas flow meter includes auxiliary path flow resistance changing means for changing a flow resistance of the auxiliary path so that the larger the flow rate of the flow is, the larger the flow resistance of the auxiliary path is.

REFERENCES:
patent: 2591195 (1952-04-01), Picciano
patent: 3688576 (1972-09-01), Obermaier et al.
patent: 3769835 (1973-11-01), Obermaier et al.
patent: 4445368 (1984-05-01), Sumal
patent: 4991560 (1991-02-01), Arai et al.

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