2 power connection – INFICON SKY CDG160D 1 ... 1000 Torr / mbar User Manual
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tina53e1-c (2011-11)
3.2 Power
Connection
Make sure the vacuum connection is properly made
(
→ 16).
DANGER
The gauge may only be connected to power sup-
plies, instruments or control devices that conform
to the requirements of a grounded protective extra-
low voltage (SELV) and limited power source
(LPS), Class 2. The connection to the gauge has to
be fused
5)
.
Ground loops, differences of potential, or EMC problems
may affect the measurement signal. For optimum signal
quality, please do observe the following notes:
• Use an overall metal braided shielded cable. The
connector must have a metal case.
• Connect the cable shield to ground at one side via the
connector case. Make sure the connector case has
direct contact to the cable's shield on its whole cir-
cumference.
Do not connect the other side of the
shield.
• Connect the supply common with protective ground
directly at the power supply.
• Use differential measurement input (signal common
and supply common conducted separately).
• Potential difference between supply common and
housing ≤18 V (overvoltage protection).
5)
INFICON controllers fulfill this requirement.