| 摘要 |
Apparatus for balancing the flow of a gaseous substance in the branch of a fluid distribution system comprising a set of variable gates to regulate the volume flow input, a screen to establish a pressure differential along the length of the unit and a pressure differential measuring system capable of detecting and measuring the pressure drop in the unit due to the screen as a function of the input flow rate and to allow regulation of the output flow by altering the input flow rate in accordance with prior calibration of the measuring system.
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