Apparatus for the measurement of the mass of a flowing medium

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

1979-11-20

1982-03-02

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

Thermal type

G01F 168

Patent

active

043173659

ABSTRACT:
An apparatus for the measurement of the mass of a flowing medium, such as for the measurement of the induced air mass in internal combustion engines which includes at least one temperature-dependent resistor film disposed in the flow of the medium, the temperature and/or resistance of the film being governed in accordance with the mass of the medium wherein the manipulated variable is a standard for the mass of the medium. The temperature-dependent resistor film is disposed in a region of stabilized flow in the flow cross section and, to this end, the temperature-dependent resistor film may be disposed either upstream of the narrowest cross section of a nozzle-like constriction wherein the pressure steadily decreases or in a gap having a laminar gap flow.

REFERENCES:
patent: 2870305 (1959-01-01), Ling
patent: 3374673 (1968-03-01), Trageser
patent: 4080821 (1978-03-01), Johnston
patent: 4083244 (1978-04-01), Agar et al.
"Heated Sensor Finds Wide Applications in Fluid Flown Measurements", Datametrics Bulletin 600, pp. 13, 14, FIG. 7, 10/70.

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