tkna80e1 (2018-08)
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 (PELV) and limited power source
(LPS), Class 2. The connection to the gauge has to
be fused.
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
1 AT (slow), automatic reset
(Polyfuse)
The gauge is protected against reverse polarity of the supply
voltage.
Electrical connection
FCC68/RJ45, 8-pin, socket
Sensor cable
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
→
Supply common - signal common conducted separately; for dif-
ferential measurement (10
Ω
)
