Pfeiffer Vacuum UNO - 8 Technical Data

19
Single stage Unit UNO 250 A
Two stage DUO 250 A
Connection nominal diameter
Inlet ISO-F DN 100 DN 100
Outlet ISO-F DN 100 DN 100
Rated volume flow rate at
50 Hz m
3
/h 267 267
60 Hz m
3
/h 320 320
Volume flow rate
50 Hz m
3
/h 250 250
60 Hz m
3
/h 300 300
Final pressure
total without gas ballast mbar < 5.0 • 10
-2
< 3.0 • 10
-3
total with gas ballast mbar < 1 < 6.0 • 10
-3
Auspuffdruck min mbar > 250 > 250
Auspuffdruck max mbar < 1500 < 1500
Water vapour compatibility
50 Hz mbar 33 25
60 Hz mbar 33 25
Water vapour acceptable capacity
50 Hz g/h 5100 4350
60 Hz g/h 6000 5200
Emission sound pressure level
without gas ballast dB(A) 75 75
Operating fluid, amount l 30 23
Max. admissible operating temperature
1)
°C 90 90
Nominal rotation speed of pump
at 50 Hz 1/min 975 975
at 60 Hz 1/min 1175 1175
Nominal motor power for
three phase motor
with temperature sensor at 50 Hz kW 7,5 7,5
at 60 Hz kW 7,5 7,5
Weight pump with
three-phase motor. kg 375 410
1)
The maximum admissible operating temperature of 90 °C is valid for an ambient temperature of 25 °C and
operating fluid P3, without gas ballast.
Operating temperatures in the range of 110 ... 115 °C could be caused by increased ambient temperature to
max. 40 °C (for operating fluid P3).
8. Technical Data