Edwards nEXT240, Instruction Manual

Page: 17 / 81

B800-00-880 Issue A
Page 10 © Edwards Limited 2009. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Technical data
Note: Pumping speeds quoted are without an inlet screen
Outlet Flange DN25NW DN25NW DN25NW DN25NW
Vent Port 1 / 8 inch BSPP 1 / 8 inch BSPP 1 / 8 inch BSPP 1 / 8 inch BSPP
Purge Port 1 / 8 inch BSPP 1 / 8 inch BSPP 1 / 8 inch BSPP 1 / 8 inch BSPP
Interstage Port DN25NW DN25NW DN25NW DN25NW
Booster Port DN25NW DN25NW DN25NW DN25NW
Inlet Pumping Speed
N
2
He
H
2
400 l/s
390 l/s
325 l/s 400 l/s
390 l/s
325 l/s 400 l/s
390 l/s
325 l/s 400 l/s
390 l/s
325 l/s
Inlet Compression Ratio
N
2
He
H
2
>1 x 10
11
1 x 10
8
5 x 10
5
>1 x 10
11
1 x 10
8
5 x 10
5
>1 x 10
11
>1 x 10
8
1 x 10
6
>1 x 10
11
>1 x 10
8
1 x 10
6
Interstage Pumping Speed
N
2
He
H
2
13 l/s
13 l/s
11 l/s 13 l/s
13 l/s
11 l/s 13 l/s
13 l/s
11 l/s 13 l/s
13 l/s
11 l/s
Peak Booster
Pumping Speed (Nitrogen)
RV12 backing pump
XDS10 backing pump - - 26m
3
h
-1
24m
3
h
-1
26m
3
h
-1
24m
3
h
-1
Ultimate Pressure
*
<1 x 10
-8
mbar <1 x 10
-10
mbar <1 x 10
-8
mbar <2 x 10
-10
mbar
*
Ultimate pressure 48 hours after bakeout for CF version and without bakeout for ISO version with 2-stage
rotary vane backing pump.