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Model<br />
Penta 10<br />
Penta 20<br />
Penta 35<br />
Model<br />
Duo 2.5<br />
Duo 35<br />
Duo 120<br />
Duo 255<br />
www.pfeiffer-vacuum.net<br />
2.2.3.2 Two-stage rotary vane vacuum pumps<br />
Two-stage rotary vane pumps are suitable for applications in the low and medium vacuum<br />
ranges to a pressure of 10 -3 mbar. They are equipped with a vacuum safety valve that<br />
prevents oil contamination in the recipient. Integrated gas ballast means allow condensable<br />
vapors to be pumped down.<br />
PentaLine The pumps in the PentaLine series are characterized by their innovative drive concept. These<br />
pumps are powered by an electronically controlled brushless DC motor whose rotor sits<br />
directly on the rotor shaft of the pumping system. The pumps are supplied with alternating<br />
current via an electronic inverter. Voltage ranges of 100 – 120 volts and 200 – 240 volts can<br />
be selected by means of a selector switch. Their advantages include high energy efficiency<br />
with approximately 25 % lower energy consumption than conventional rotary vane pumps,<br />
and the pump’s hermetic seal without shaft feedthrough.<br />
If maximum pump performance is temporarily not required, the RPM of the pump can be<br />
reduced to the standby mode for additional energy savings of 50 %. Thanks to this new drive<br />
concept, it is possible to avoid the high startup currents that typically occur when the pump<br />
is cold, even with asynchronous motors. In addition to the above-mentioned gas ballast, the<br />
PentaLine pumps can be operated with temperature control to increase water vapor tolerance.<br />
The functions of Pump ON, Standby ON and Enhanced Water Vapor Tolerance ON can be<br />
selected by means of a PLC-compatible interface or a remote connection.<br />
Table 2.3: PentaLine performance data<br />
DuoLine <br />
Pumping Speed<br />
11 m³ / h<br />
22 m³ / h<br />
34 m³ / h<br />
Ultimate Pressure<br />
5 . 10 - 3 mbar<br />
5 . 10 - 3 mbar<br />
5 . 10 - 3 mbar<br />
Applications<br />
Ideally suited for turbopump pumping<br />
stations, analysis, industrial applications,<br />
research and development, coating<br />
DuoLine rotary vane vacuum pumps are powered by AC or DC motors, depending upon the<br />
size of the pump. In addition to the standard models, the following designs are also available:<br />
Magnetically coupled pumps (Duo M series) and corrosive gas pumps, both with and without<br />
magnetic coupling (Duo MC series).<br />
Table 2.4: DuoLine performance data<br />
Pumping Speed<br />
2.5 m³ / h<br />
35.0 m³ / h<br />
120.0 m³ / h<br />
250.0 m³ / h<br />
Ultimate Pressure<br />
6 . 10 - 3 mbar<br />
3 . 10 - 3 mbar<br />
6 . 10 - 3 mbar<br />
5 . 10 - 3 mbar<br />
Applications<br />
Suited for Turbopump pumping stations,<br />
analysis, research and development,<br />
coating<br />
Page 33<br />
<strong>Vacuum</strong><br />
<strong>Technology</strong>
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