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一、标准装置的构成气相色谱仪用的转子流量计流量一般在1～10L/h。为了校准这种微小流量转子流量计,我们安排了如图所示的一套小流量标准装置。校准气体转子流量计时(见图中的a),由一个恒压降高位槽和一个定容积的标准量器构成。高位槽的水呈稳流状态,注入标准量器, 高位水槽是一个20L的下口玻璃瓶,直径为273mm。溢出口下沿距离位水槽底部(瓶底) 300mm,水槽与标准量器用橡皮管连接,可升可降。将高位水槽固定在高位架上,溢流口距标准量器入水口中心1200mm,即恒压头高度1200mm。恒压头水位波动不超过1mm。
First, the composition of the standard device Rotameter gas flow meter flow rate is generally 1 ~ 10L / h. To calibrate this tiny flow rotor flow meter, we arranged a small set of flow standards as shown. Calibration gas rotor flow meter (see Figure a), by a constant pressure drop bit tank and a constant volume of the standard device. High trough water steady flow state, into the standard measuring device, high sink is a 20L glass mouth, the diameter of 273mm. Bottom of spill along the bottom of the tank (Bottom) 300mm, Sink and standard measuring device with a rubber tube can be up and down. The high water tank is fixed in the high frame, the overflow port from the standard measuring device inlet center 1200mm, the constant pressure head height 1200mm. Constant pressure head water level fluctuations of not more than 1mm.