(1) The vacuum degree refers to the pressure of the remaining gas in the pumped vessel. The partial pressure is the factory standard, and the total pressure is the auxiliary standard. The thermocouple measures the total pressure of all kinds of steam and permanent gas, while the Maxwell's meter can only measure the partial pressure of the permanent gas, so the values of the two meters are different.
(2) The pumping speed is calculated according to the geometric dimensions. At atmospheric pressure J, the actual pumping speed is basically consistent with the geometric pumping speed. At various pressures, the pumping speed decreases to a certain extent. The relationship between pumping speed and pressure is shown in Fig. 4.
(3) Temperature rise refers to the temperature difference between the oil at the exhaust valve and the room temperature after the pump temperature is stable.
(4) 2X rotary vane vacuum pump model: column 2k-1, 2 represents double-stage pump, K represents rotary vane vacuum pump, and the number behind a horizontal line represents pumping speed per second.
Water Ring Vacuum Pump
Dry Scroll Vacuum Pump
industrial vacuum pumps,vacuum furnaces
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