nEXT
1230H
Purge gas ow
mbar · I · s
-1
sccm
0.4
24
Pur
ge gas connecon G 1/8"
V
enng connecon G 1/8"
* Depending on the ambien
t temperature, the gas throughput and the type of gas,
forc
ed air cooling or water cooling may be necessary.
4.2.1  Pumping speed curves
Figure 2 Pumping speed curves for nEXT730D
0 
200 
400 
600 
800 
1.000 
Pumping speed in l/s 
Inlet pressure in mbar 
Nitrogen
Helium 
Hydrogen 
Argon 
nEXT730D
10
-6
  10
-5
  10
-4
  10
-3
  10
-2
  10
-1
 
1
BC-0037-A
08/2021 - ©Edwards Limited
Page 25B8J200880_D
300812671_002_C3
B8J200880_D - Technical data