INFICON SKY CDG025D-X3 0.1 ... 1000 Torr / mbar process gauge - Manual (Page 16)

16 tina57e1 (2010-01)
3.2 Electrical Connection
Make sure the vacuum connection is properly made
( → 13).
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
4)
.
Ground loops, differences of potential, or EMC problems
may affect the measurement signal. For optimum signal
quality, please do observe the following notes:
• Connect the cable shield to ground on one side via
the chassis ground. 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).
4)
INFICON controllers fulfill this requirement.