| 摘要 |
A device for measuring a gas flow (F) has a measuring body (1) in the form o f a cylinder, and a heating means (12) for heating the measuring body. A slot (5) extends axially into the cylinder fro m one end thereof so as to divide a first portion of the cylinder into two symmetrical halves (6a, 6b). The heating means (12) is disposed in a second cylinder portion which is not di- vided by the slot (5). A temperature sensor (13) is arranged in the second cylinder portion, and a temperature sensor (14, 15) is arranged in each cylinder half (6a, 6b). For measuring a gas flow (F), the measuring body (1) is so disposed in the gas flow that the slot (5) extends at right angles to the gas flow with one half (6a) faci ng the gas flow and with the other half (6b) facing away from the gas flow. The measuring body (1) is heated by the heating means (12 ) to a temperature exceeding the ambient tempera- ture by a predetermined value. The temperature is measured in each of the tw o symmetrical cylinder halves (6a, 6b), whereupon the gas flow is calculated on the basis of the measured temperatures.</SDOAB >
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