Installation
9
300265097_002_A1 - 05/2014 - © Oerlikon Leybold Vacuum
2.3
Installation
As a rule, all ionisation measurement systems must only
be operated in connection with a properly
earthed
pump system.
Installation and mounting may only be carried out with
the operating unit switched off.
When connecting the vacuum gauges to the vacuum
system it must be strictly observed that during operation
the gauges are not subjected to mechanical oscillations,
impact or vibrations.
The mounting position of the gauge heads has no influence
on proper operation. It is not permissible to install a venting
valve in the immediate vicinity. The then suddenly occurring
air flow may result in mechanical damage to the sensitive
cathode.
When installing several gauge heads at
one
common com-
ponent (T-piece or cross for example) an optical separation
is required. The gauge heads may not directly “see” each
other. Interactions may cause incorrect measurements.
Humidity at the insulators (2/14) caused by condensing
water for example , can give rise to incorrect measure-
ments due to leakage currents.
Connecting the gauge head cable and the exten-
sion cable
Do not use force to connect the plug. When plugging in
make sure first that all pins are lined up in parallel and are
straight. Otherwise the current feedthrough can suffer
damage.
Live Voltages
If during operation the IM 540 suffers a malfunction then
a live voltage may be present at the gauge head cable
connection (CH 1, CH 2).
Affix the touch protection component at the IM 540
(BNC plug). The touch protection component is sup-
plied together with the gauge head cable.
CAUTION
DANGER
NOTICE
