HBM PW15PH Series, Инструкция по монтажу

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Electrical connection
PW15PH
A03392_02_Y00_00 HBM: public
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5.2 Connection in a four-wire configuration
When transducers in a six-wire configuration are connected to amplifiers in a
four-wire configuration, the sense leads of the transducers must be connected
to the corresponding excitation voltage leads: Marking (+) with (+) and marking
(-) with (-),
see Fig. 5.1 . This measure also reduces the cable resistance of the
excitation voltage leads. However, there will be a voltage loss on the supply
leads due to the cable resistance that is still present and not compensated for
by the 6-wire configuration. A large part of this loss can be eliminated by a
calibration, however, the temperature-dependent part remains.
Important
Therefore, the TC
S
value stated for the transducer in the specifications does
not apply to the cable and transducer combination when connection is in a
four-wire configuration, in which case the cable percentage must be added.
5.3 Shortening the cable
If the transducer is connected to an amplifier in a six-wire configuration, you
can shorten the transducer cable if necessary with no adverse effect on
measurement accuracy.
5.4 Extending the cable
Use only shielded, low-capacitance measurement cables for extending the
cable, making sure there is a proper connection with minimal contact
resistance.
The cable of a six-wire transducer can be extended with a cable of the same
type.
5.5 Parallel connection
Only load cells with a compensated output (nominal (rated) sensitivity and out­
put resistance) are suitable for parallel connection. This option is not available
with type PW15PH load cells.