NOTICE
Impairment from contamination and damage
Touching the devices or components with bare hands increases the desorption rate and leads to in-
correct measurements. Dirt (e.g. dust, fingerprints, etc.) and damage impair the function.
► When working on high or ultra high vacuum systems, always wear clean, lint-free and powder-
free laboratory gloves.
► Only use clean tools.
► Make sure that the connection flanges are free of grease.
► Remove protective caps and protective covers from flanges and connections only when necessa-
ry.
► Carry out all work in a well lit area.
Remove the magnetic unit to facilitate installation of the gauge.
Required tools
● Allen key,
WAF 1.5
● Open-end wrench,
WAF 7
5
1
4
2
3
Fig. 4:
Removing/installing magnetic unit
1 Measurement chamber
4
Electronic unit
2 Hexagon head set screw
5
Grub screw
3 Magnetic unit
Removing the magnetic unit
1. Loosen the grub screw on the side of the electronic unit.
2. Remove the electronic unit without exerting any rotary movement.
3. Loosen the hexagon head screw on the magnetic unit.
4. Remove the magnetic unit.
– Separation of the magnetic unit and measurement chamber is made more difficult due to the
effect of magnetic force and the tendency for them to tilt easily.
Installing magnetic unit
1. Fit the magnetic unit.
– Fitting of the magnetic unit is made more difficult due to the effect of magnetic force and the
tendency for it to tilt easily.
2. Fasten the hexagon head set screw on the magnetic unit.
3. Carefully fit the electronic unit.
– The male connector of the Pirani element must engage in the corresponding opening of the
electronic unit.
4. Push the electronic unit as far as the limit stop.
5. Secure the grub screw on the side of the electronic unit.
Installation
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