Edwards B756-51-991, Инструкция по эксплуатации

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TECHNICAL DATA
B756-50-880 Issue C
2 TECHNICAL DATA
2.1 General
2.2 Pumping media
CAUTION
Do not use the EXT70/70/200H to pump gases containing more than 20% oxygen. If gases containing more than
20% oxygen are pumped, the pump lubricant will polymerise and the pump may fail prematurely.
Note: Concentrations of gases may be modified by the compression of the pump.
The EXT70/70/200H is designed to pump the following residual gases normally used in high-vacuum systems:
The pump can be used to pump oxygen and water vapour, subject to the following conditions:

Oxygen - The oxygen concentration must be less than 20% by volume.

Water vapour - Ensure that vapour does not condense inside the pump.
If there is a requirement to pump a gas not in the list above, contact the supplier for advice. If the supplier is not
contacted, the warranty on the pump may be invalidated. The pumps are not suitable for pumping aggressive or
corrosive gases.
Performance See Table 1
Dimensions See Figure 1
Maximum inlet flange temperature 70 ºC
Maximum magnetic field 3.5 mT radial field
>7 mT axial field
Installation category EN61010 part 1, Category 1
Pollution degree EN61010 part 1, Category 2
Ambient operating temperature range 5 ºC to 40 ºC
Ambient operating humidity range 10 to 90% RH (non-condensing)
Maximum operating altitude 2000 m
Ambient storage temperature range -30 ºC to 70 ºC
WARNING
Do not use the EXT70/70/200H to pump explosive gas mixtures as the pump is not suitable for this
purpose.

Air

Argon

Carbon monoxide

Propane

Neon

Carbon dioxide

Ethane

Helium

Methane

Hydrogen

Nitrogen

Butane

Krypton