Mass flowmeter with sensor gain control

Details Mass flowmeter with sensor gain control Mass flowmeter with sensor gain control

1980-02-28

1982-01-19

Gill, James J.

Measuring and testing

Volume or rate of flow

Mass flow by imparting angular or transverse momentum to the...

G01F 184

Patent

active

043110541

ABSTRACT:
A mass flow rate meter is provided having two U-shaped tubular flow loops, means for vibrating the flow loops like the tines of a tuning fork. Opto-electrical sensors on opposite legs of the flow loops generate signals indicative of the times between the passing of the sides of the loop through the static plane of the loop. The times between the passing of the sides of the loops through the static plane may be combined to derive the mass flow rate of material flowing through the loops. Means are provided for varying the gain of the opto-electrical sensors to provide for a constant performance under conditions of changing temperature, voltage variations and aging characteristics.

REFERENCES:
patent: 4054795 (1977-10-01), Kinder
patent: 4097732 (1978-06-01), Krause et al.
patent: 4127028 (1978-11-01), Cox et al.
patent: 4252028 (1981-02-01), Smith et al.

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