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Electrical connection
In order to keep the size down, the transducer is not fitted with integrated
sense leads for operating in a six‐wire circuit.
When operating with a six‐wire measuring amplifier therefore, the feedback
inputs must be connected to the appropriate supply leads (see Fig. 6.1).
The effect of the fitted four‐wire cable is taken into account during factory
calibration.
6.1
Cable extensions
When operating with a six‐wire measuring amplifier the cable can be extended
without any ill effects (maximum 200 meters).
The prerequisite for this is the use of a high‐grade, low‐capacitance
measurement cable. The supplementary sense leads (HBM colors gray and
green) then assess the voltage at the transducer connection and feed it back to
the six‐wire measuring amplifier. This regulates the voltage so that it reaches
the transducer loss‐free.
WI
9
A01028_05_Y00_01 HBM: public
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