Pumping Media; Performance Characteristics - Edwards nXDS series Instruction Manual

A735-01-880 Issue C
2.2.2

Pumping media

Do not use the nXDS pump to pump pyrophoric or explosive gas mixtures.
The pump is designed to pump the following gases:
Air

Carbon dioxide

Helium

Carbon monoxide

Nitrogen

Argon

Oxygen (O )

2
The pump can be used to pump water vapour. Caution must be taken to ensure that vapour does not condense inside
the pump. Refer to Section 4.6.1 on how to prevent condensation of water vapour in the pump.
If pumping a vapour or gas not in the list above, contact Edwards for advice.
2.2.3

Performance characteristics

The position of the gas ballast control defines the performance characteristics of the pump. These performance
characteristics are listed in
Description
Gas ballast position 0
Pump ultimate
(mbar)
Gas ballast position 1
Gas ballast flow
Gas ballast position 1
-1
(l min )
Page 8
WARNING
Table 5.
Table 5 - Performance characteristics
Edwards and the Edwards logo are trademarks of Edwards Limited.
nXDS6i nXDS10i
-2 -3
2 x10 7 x 10
-2 -2
5 x 10 4 x 10
12 16
© Edwards Limited 2017. All rights reserved.
nXDS15i nXDS20i
-3 -2
7 x 10 3 x 10
-2 -2
4 x 10 6 x 10
31 24