Apparatus for measuring the mass of a flowing medium

Details Apparatus for measuring the mass of a flowing medium Apparatus for measuring the mass of a flowing medium

1980-04-02

1982-04-20

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

Thermal type

G01F 168

Patent

active

043252532

ABSTRACT:
A temperature-dependent resistor is embodied as a hot wire and secured by support elements in a probe ring. At least one of the support elements has a contact area having the smallest possible cross section on which a hot wire securing portion is defined. The hot wire is secured to the contact area at the securing portion. The contact area may be embodied, for example, as sharp-pointed or cylindrical and cause a minimum possible conduction of heat away from the hot wire along the support element, so that even during a glow burnoff process the entire hot wire length, up to the securing portion is burned free of deposits and thus continuously satisfactory functioning of the air flow rate meter is assured.

REFERENCES:
patent: 1156660 (1915-10-01), Berg
patent: 1257568 (1918-02-01), Wilson
patent: 1260498 (1918-03-01), Wilson
patent: 3971247 (1976-07-01), Rodder
"The Hot Wire Anemometer", Flow Corporation Bulletin, 5/66, p. 1.

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