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Page 11
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Technical data
B722-20-880 Issue D
9 x 10
-3
mbar
9 x 10
-1
Pa
9 x 10
-3
mbar
9 x 10
-1
Pa
9 x 10
-3
mbar
9 x 10
-1
Pa
9 x 10
-3
mbar
9 x 10
-1
Pa
air cooling at
35 °C
5 x 10
-3
mbar
5 x 10
-1
Pa
5 x 10
-3
mbar
5 x 10
-1
Pa
5 x 10
-3
mbar
5 x 10
-1
Pa
5 x 10
-3
mbar
5 x 10
-1
Pa
Recommended
backing pump
†††
E2M0.7
E2M0.7
E2M0.7
E2M0.7
Operating attitude Vertical and upright through to horizontal
±
2°
Nominal rotational
speed
90000 r min
-1
90000 r min
-1
90000 r min
-1
90000 r min
-1
Starting time to
90% speed
(EXDC80)
≤
100 sec
≤
100 sec
≤
100 sec
≤
100 sec
Cooling method:
Forced-air/water
Ambient air
temperature
(forced-air
cooling)
0 - 35 °C
Water
temperature
(water-cooling)
10 - 20 °C
Noise level (at 1
metre)
<
50 dB(A)
Compatible drive
modules
EXDC80 24V
maximum power
input
EXDC80 24 V
93 W
*
Optional accessory.
†
Pumping speeds are without inlet-screen or inlet-strainer. Inlet-screens and inlet-strainers reduce speed by
approximately 10% for ISO63. For ISO100 this reduction is less pronounced.
‡
Pb = backing pressure, Qi = flow through the interstage-port (EXT70Hi only), Qp = flow through pump-inlet
**
Ultimate pressure 48 hours after bakeout with 2-stage rotary vane backing-pump.
††
Ultimate pressure 48 hours after bakeout with Pb < 5 mbar (500 Pa).
‡‡
Inlet pressure has risen to 1 x 10
-3
mbar (1 x 10
-1
Pa).
***
Above this pressure, rotational speed drops below nominal.
†††
A larger backing-pump may be required for maximum throughput. A suitable diaphragm pump with ultimate
<
5 mbar may also be used.
Table 2 - EXT255H 24 V / EXT255Hi 24 V technical data
Parameter
EXT255H 24V
EXT255Hi 24V
Notes
Mass
DN100ISO-K inlet flange
5.6 kg
6.0 kg
DN100CF inlet flange
8.2 kg
N/A
Table 1 - EXT 70H 24 V / EXT 70Hi 24 V technical data (continued)
Parameter
EXT70H/ISO63
24 V
EXT70H/
ISO100 24 V
EXT70H/63CF
24 V
EXT70H/NW40
24 V
Notes
