Extension Cables And Cable Shortening - HBM C2 Montageanleitung

Electrical connection
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leads: marking (+) with (+), and correspondingly, excita­
tion voltage lead (-) with sense lead (-).
Please note: The 6-wire configuration regulates the cable
resistances, allowing the measurement system to work
independently of the connection cable length and any
variations of measuring lead temperature. This electrical
compensation of cable resistances does not occur when
a 4-wire circuit is used. The uncertainty changes subject
to the cable resistances, changes in temperature act as
sensitivity changes.
The connection cable shield is connected to the trans­
ducer housing. If you are not using pre-wired HBM
cables, connect the cable shield to the cable socket
housing. Use shielded plugs on the free ends of the cable
to be connected to the amplifier system, with the shield­
ing extensively applied. With other connection tech­
niques, a good EMC shield must be provided in the
stranded area, where the shielding must also be exten­
sively connected.
8.2 Extension cables and cable
shortening
As the transducer is implemented in a 6-wire configura­
tion, you can shorten the connecting cables without detri­
ment to the measurement accuracy.
Connection cables are available from HBM in various
lengths, so extension cables are not generally necessary.
The maximum cable length depends on the ohmic resis­
tance of the cable and the amplifier used, so please con­
sult the amplifier system operating manual.
Only use low-capacitance, shielded measurement cables
as extension cables. A perfect electrical connection with
low contact resistance is essential, and the cable shield
A0674-5.0 HBM: public
C2