Thermal mass flowmeter apparatus and method with temperature...

Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Mechanical measurement system

Reexamination Certificate

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C073S170120

Reexamination Certificate

active

07054767

ABSTRACT:
A thermal mass flowmeter with temperature correction. The flowmeter includes a bridge, a signal conditioner, and a balancer. The balancer provides a bridge signal as feedback to the bridge that balances a flow sensor signal and the temperature sensor signal from the bridge. The flow sensor signal or the temperature sensor signal are adjusted by an overheat factor and a temperature correction factor. The temperature correction factor is determined using a predetermined function of a temperature of the fluid. Methods of determining parameters of the predefined function and using the flowmeter for determining a flow rate of the fluid are disclosed. The flowmeter provides device for determining a flow rate of a fluid over a wide range of temperature and flow rates as well as providing device for determining the temperature of the fluid.

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patent: 1 314 966 (2003-05-01), None

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