Mass flowmeter or the like

Details Mass flowmeter or the like Mass flowmeter or the like

1981-08-10

1983-10-25

Ruehl, Charles A.

Measuring and testing

Volume or rate of flow

With indirect temperature or density compensation

73 32A, G01F 190, G01F 1504

Patent

active

044111614

ABSTRACT:
A quartz tuning fork in a chamber adjacent a gas pipeline carrying a turbine flowmeter. The chamber is connected across the flowmeter turbine to receive a gas at a flow rate high enough to cause the tuning fork to vibrate. A main output frequency is developed which is directly proportional to the product of a function of the tuning fork period of vibration and the turbine meter output signal frequency. The main output frequency is then counted and is displayed on an indicator, the constants of the circuit being so selected that the indicator displays total flow in units of mass. The density sensor measures the gas density at the turbine flowmeter rotor location. This obviates the requirement for expansion factor corrections.

REFERENCES:
patent: 3902365 (1975-09-01), Knauth
patent: 4088022 (1978-05-01), Kalotay
patent: 4262523 (1981-04-01), Stansfeld
patent: 4349881 (1982-09-01), November et al.

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