Vaisala K-PATENTS PR-43, User Manual

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3. Refractometer connections
The refractometer has an Ethernet connection for digital data acquisition and configuration.
The standard connection cable is made with an 8-pin industrial M12 connector in the
refractometer end. For more information on the cables, see the manual for your refractometer
model.
3.1 Power supply
The PR-43 refractometer requires a 24 V DC power supply (allowable tolerance is ±10 %). The
current consumption of the refractometer is less than 80 mA. The power supply should be
shielded from external voltage surges.
3.2 mA output
The PR-43 refractometer can be connected with just an mA output. The analogue connection
transmits measurement signal only.
PR-43 REFRACTOMETER
M-12-8 pin, A-code, M
non-Ex
max. 200m (656ft)
PR-8680
M12-8 pin, A-code, F
Field plug
PR-8432
Power supply and
mA output cable
F
Figure 1 Analogue connection
3.3 Cable connections
If the refractometer is connected with Split cable PR-8431, both mA and Ethernet outputs are
available.
PR-43 Series User Guide M212455EN-B
8