Ultraflux Uf 811 CO, User Manual, Page: 16 / 106

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NT UF 811 CO GB (c) / March 2014
3.2 Wiring instructions
Wiring must be carried out by a person with electrical accreditation. The flow meter must be powered off
before installing or uninstalling. The isolation devices must be locked and tagged. The wiring must respect
the diagrams provided for the power supply and for the inputs/outputs.
It is sometimes necessary to protect the inputs/outputs, the power supply and the ultrasonic chords. You are
strongly recommended to contact Ultraflux to obtain a diagnosis on this point. Ultraflux accepts no
responsibility in the event of the incorrect use of the flow meter, and in such cases, the Ultraflux guarantee
would not be valid.
3.3 Connector wiring
Preliminary comments:
 If using an armoured cable, be careful with the "cutting edge" of the armour after cutting it to
strip the wire. This edge may be very sharp. It is recommended to cover the cut edge of the
armour with insulating tape to prevent any accidents.
 The armour must remain outside the plugs. The shielding must pass through the connector in
order to prevent interfering signals from damaging the quality of the measurement. Remember
to allow sufficient lengths to be able to access the locations of the probes and the
inputs/outputs.
 The length recommendation in the assembly diagrams must be complied with in order to ensure
good contact between wire and pin and provide leaktightness.
 The recommended wire cross-sections must be complied with in order to be compatible with the
connectors.
 The recommended tightening torques must be complied with in order to ensure leaktightness
and the good mechanical strength of the flow meter.
Note : All connectors are supplied with the flow meter.
Tools required:
 18 mm open-ended wrenches
 Combination pliers
 Cutting pliers
 Stripping pliers
 Cutter
 10-m tape
 Torque wrench
 4 mm flat screwdriver