Explanation of the performance parameters of the vacuum pump 1. Performance parameters of the vacuum pump 1. The ultimate pressure unit of the ultimate pressure pump of the vacuum pump is Pa, which means that the pump is equipped with a standard test hood at the inlet and works according to the specified conditions. In the case, the lowest pressure tends to be stable.
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specification:ba:30%min si:50%min Al:1.5%max C:1%max s:0.05%max P:0.05%max
ba:28%min si:50%min Al:1.5%max C:1%max s:0.05%max P:0.05%max
2. Pumping rate of vacuum pump The pumping rate of the pump is m3/s or l/s, which means that the pump is equipped with a standard test hood and, when operating according to the specified conditions, the flow of gas flowing through the test hood and the test hood The ratio of the equilibrium pressure measured at the specified location. Referred to as the pumping speed of the pump.
3. Pumping capacity of the vacuum pump The pumping unit of the vacuum pump is Pa m3/s or Pa l/s. Refers to the gas flow at the pump inlet.
4. Starting pressure of vacuum pump The starting pressure unit of vacuum pump is Pa, which refers to the pressure when the pump starts without damage and has pumping action.
5, the pump's front-stage pressure vacuum pump's front-stage pressure unit is Pa, which refers to the outlet pressure of the vacuum pump with a discharge pressure lower than one atmosphere.
6. Maximum front pressure of the vacuum pump The maximum front pressure unit of the vacuum pump port is Pa, which means that the pressure of the front stage that can damage the pump is exceeded.
7. Maximum working pressure of vacuum pump The maximum working pressure unit of vacuum pump is Pa, which refers to the inlet pressure corresponding to the maximum pumping amount. At this pressure, the pump can work continuously without deterioration or damage.
8. Compression ratio The compression ratio refers to the ratio of the outlet pressure of the pump to a given gas and the inlet pressure.
9. The ratio of the actual pumping speed on the area of ​​the pumping passage of the Ho's coefficient pump to the theoretical pumping speed calculated by the molecular effusion.
10. The ratio of the actual pumping speed of the pumping speed coefficient pump to the theoretical pumping speed calculated by the molecular effusion at the pump inlet.
11. The return flow rate unit of the reflux rate pump is g/cm2.s. It refers to the pump flow mass flow rate per unit area through the pump inlet when the pump is operating under specified conditions.
12. The allowable amount of water vapor allowed in water vapor is kg/h, which refers to the mass flow rate of water vapor that can be pumped out by the pump when the pump is under normal environmental conditions.
13. The maximum allowable water vapor inlet pressure is the maximum allowable water vapor inlet pressure unit is Pa. It refers to the highest inlet pressure of water vapor that can be pumped out during continuous operation under normal environmental conditions. 
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