BG 800 300 BE / A (0105) TPG 300
10
3.2 Plug-in boards
3.2.1 Factory configuration
In most cases, the TPG 300 is supplied ready for operation, (with
the plug-in boards already installed). In addition, in units for
combined measurement of medium and high vacuum, the high
vacuum measuring circuit is controlled automatically according to
pressure. This is because switching function A and / or B is
factory assigned to a medium vacuum measuring circuit
(
→
section 4.7.3).
There are two types of configuration:
•
Units with CP 300 measurement plug-in board(s)
The cold cathode measuring circuit is controlled by the Pirani
measuring circuit which is on the same measurement plug-in
board.
•
Units with PI 300D and PE 300 measurement plug-in boards
The cold cathode measuring circuit is controlled by the Pirani
measuring circuit <TPR 2>.
The controlling Pirani gauge and the controlled cold cathode
gauge must both be connected to the same vacuum chamber to
guarantee efficient operation.
No measuring circuit assignment is activated by all other factory
configurations.
3.2.2 Installing / removing plug-in boards
For safety reasons, empty slots should always be covered
with blank plates.
Installing / removing plug-in boards
→
&
[3].
3.3 Connecting plug-in boards
→
&
[3]
3.4 Installation in a 19" rack
If the unit is to be installed in a rack, it must not lower the
protection class of the rack (protection against foreign
objects and water) e.g. DIN VDE 0113 regulations for
switch cabinets when in place.
Take into account the ambiance conditions
(
→
section 5.2).
