INFICON Porter CDG020D 10 ... 1000 Torr / mbar - Manual (Page 9)

tina80e1 (2012-06) 9
Supply
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
2) .
Supply voltage
at the gauge
ripple
+13 … +32 VDC
Class 2 / LPS
≤50 mV
pp
Current consumption <20 mA
Power consumption ≤0.3 W
Fuse required 2) 1 AT (slow), automatic reset
(Polyfuse)
The gauge is protected against reverse polarity of the supply
voltage.
Electrical connection
3CAx-xxx-0xxx
3CAx-xxx-1xxx
3CAx-xxx-Axxx
FCC68/RJ45, 8-pin, socket
D-Sub, 9-pin, male
Binder M12, 8-pin, male
Sensor cable
3CAx-xxx-0xxx
3CAx-xxx-1xxx
3CAx-xxx-Axxx
8-pin plus shielding
9-pin plus shielding
8-pin plus shielding
Cable length ≤100 m (0.14 mm² conductor)
For longer cables, larger conductor cross-sections are required.
Grounding concept
Vacuum flange - signal common → "Power Connection"
Supply common - signal common conducted separately; for dif-
ferential measurement (10 Ω)
2)
INFICON controllers fulfill this requirement.