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2 stage vacuum pump

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Product Summary

A 2 stage vacuum pump is a device that removes gas molecules from a sealed volume in order to leave behind a partial vacuum.

A 2 stage vacuum pump apparatus comprising: a first stage screw-type vacuum pump having a suction port connected to a system to be evacuated and adapted to be driven by a first electric motor; a second stage vacuum pump connected to a discharge port of said first stage vacuum pump and adapted to be driven by a second electric motor; a first pressure sensing means for sensing the pressure in said suction port of said first stage vacuum pump; a second pressure sensing means for sensing the pressure in said discharge port of said first stage vacuum pump; and a control unit including a reference suction pressure setting means for presetting a first reference level for the suction pressure at said suction port.

A 2 stage vacuum pump is capable of attaining a high level of vacuum without any risk for the evacuated system to be contaminated by oil.

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