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针对此情况，设计了在测风装置上加装带PLC的吹扫装置，可以实现风量测量系统取压管的自动吹扫。
So we design purging equipment with PLC, which can finish the blowing behavior automatically on the pressure line of the air flow measuring system.
文章针对锅炉送风矩形大管道，运用“对数一切比雪夫”法的速度一面积法，来设计风量测量装置，以及根据设计的方案选型。
For boiler air-flow rectangular tube, the article introduced using Logarithmic Chebychev method to design air-flow meter and choose appropriate proper model according to design scheme.
介绍了ASHRAE标准关于变风量空调系统中新风量确定的方法，常用的新风量测量方法和控制方法以及新风的利用，探讨了测试中发现的新风量确定和新风品质等问题。
Presents the method for determining the outdoor air volume from ASHRAE Standard 62-1989r, commonly used methods for measuring and controlling the outdoor air, and employment of outdoor air.
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