| 摘要 |
The invention relates to a measuring arrangement for measuring the flow velocity of a gas. With a single measuring sensor, a physical quantity of the gas as well as the gas temperature can be measured. During a first measuring phase in which the measuring sensor is heated to an operating temperature by a heating current, a first measurement quantity is determined from the change of the heating current caused by the physical quantity. During a second measuring phase, the measuring sensor is connected to a resistance measuring device and the heating current of the measuring sensor is reduced in such a manner that the inherent warming of the measuring sensor is small compared to the operating temperature. A second measurement quantity is determined from the resistance of the measuring sensor which is proportional to the temperature of the gas.
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