Mass flowmeter for measuring by the CT method

Details Mass flowmeter for measuring by the CT method Mass flowmeter for measuring by the CT method

2006-04-18

2006-04-18

Patel, Harshad (Department: 2855)

Measuring and testing

Volume or rate of flow

Proportional

C073S204270

Reexamination Certificate

active

07028544

ABSTRACT:
A mass flowmeter of the thermal type provided with a flow sensor with a flow tube through which a fluid can flow during operation, with a temperature sensor in an upstream position (A) and a heater (H) in a downstream position (B), and power control means and temperature measuring means for keeping the temperature difference between A and B at a predetermined constant value. Between A and B, the flowmeter is provided with means for preventing the temperature at A from rising owing to thermal conduction from B to A via the tube in the case of no flow or a weak flow.

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patent: 4016759 (1977-04-01), Baker et al.
patent: 5285673 (1994-02-01), Drexel et al.
patent: 5359878 (1994-11-01), Mudd
patent: 5831159 (1998-11-01), Renger
patent: 6595049 (2003-07-01), Maginnis et al.
patent: 6779394 (2004-08-01), Ambrosina et al.
patent: 1 139 073 (2001-10-01), None
patent: WO 92/20006 (1992-11-01), None

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