5.3 Electrical Mounting
5.3.1 Cable
Solder a shielded cable with diameter 7-8 mm and a core cross-section of 0,5...0,75 mm² to the
enclosed coupling socket.
•
The number of necessary wires is given in the connection diagram (chapter 7).
5.3.1.1 Cable Recommendation
No. of wires/ diameter / type / cable diameter
CABLE 8x0,5mm² LIYCY BLACK, UV- resistant, Ø 7,6 mm
5.3.2 Cable Shield
The connection of the cable shield between sensor and data acquisition device should be selected
in way, that in case of over-voltages no equalizing currents will flow that might destroy the electron-
ic components.
The connection of the cable shield should depend on the selected isolated, or respectively, non-
isolated mounting of the sensors.
5.3.2.1 Connecting Recommendation for the Cable Shield
Sensor Carrier
Sensor
Shielding / Ground
Lightning Protection
1. Metallic measurement
mast, grounded
Isolated
mounting at
the measuring mast
(e.g. by non-metallic
brackets, holder etc. or
by metallic brackets,
holder etc. with isolated
plastic adaptors)
Apply the cable shield
between sensor and data
acquisition device (e.g.
datalogger) both-sided.
Ground data acquisition
device.
Mount metallic lightning pro-
tection rod on the mast.
Alternatively:
Install separate lightning
protection rod beside the
measurement mast.
2. Metallic measurement
mast, grounded
Non-isolated
mounting
at the measurement
mast
(e.g. by metallic brack-
ets, holders etc.)
Apply cable shield be-
tween sensor and data
acquisition device (e.g.
datalogger) only one-
sided at the acquisition
device..
Ground data acquisition
device.
Mount metallic lightning pro-
tection rod on the mast in
isolated condition
, and
ground lightning protection
rod.
Alternatively:
Install separate lightning
protection rod beside the
measurement mast.
3. Metallic measurement
mast, not grounded
(mounted in isolated
condition, e.g. on the
attic)
Non-isolated
mounting
at the measurement
mast.
(e.g. by metallic brack-
ets, holders etc.)
Apply the cable shield
between sensor and data
acquisition device (e.g.
datalogger) both-sided.
Ground data acquisition
device.
Mount metallic lightning pro-
tection rod on the mast in
isolated condition
, and
ground lightning protection
rod.
Alternatively:
Install separate lightning
protection rod beside the
measurement mast.
4. Non-metallic measuring
mast (=isolated)
Mounting at the meas-
urement mast.
(e.g. by metallic brack-
ets, holders etc.)
Apply the cable shield
between sensor and data
acquisition device (e.g.
datalogger) both-sided.
Ground data acquisition
device.
Mount metallic lightning pro-
tection rod on the mast, and
ground lightning protection
rod.
Alternatively:
Install separate lightning
protection rod beside the
measurement mast.
9 - 22
021754/05/14
