| 摘要 |
The invention relates to a device 10 for measuring and regulating an air current, which device comprises a central body portion R1 and ends for the measuring units in connection therewith, a pressure being relayed via the one measuring unit from a measuring point towards the current and a pressure being relayed via the other unit from a measuring point which is protected in relation to the current. On the basis of the pressure differential of the said pressure, the volume of air current is able to be read off. In the design of the device, the plant comprises a control member 12 for the air current which is moved along the body part R1. An end body R2 is connected to the central body part R1, which end body comprises an end flange 15, the duct nozzle 15b of which can be connected to the inset 17b of the end piece 17. <IMAGE>
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