Ultraflux UF 831, User Manual, Page: 9 / 109

9
NT UF 831 CO GB (b) / March 2014
The cabinet power supply can be provided using an H05-RNF-3G0.75 type cable.
It is recommended to install a disconnectable bipolar circuit breaker interrupter with visible cut-off of 10 A
upstream of the flow meter power supply. It is also recommended to install lightning arresters on each of
the inputs/outputs of the flow meter, along with a galvanic isolator.
Important:
 The wiring and unwiring of the flow meter must be performed by a person with electrical
accreditation. This accreditation must be obtained before dismounting the plate including the keypad
and the display. It is essential for this plate to be closed with a tool after each intervention.
 Connection and disconnection from the outlets must be carried out with the power off and the
equipment isolated.
Ultraflux accepts no responsibility for incidents which may occur following a failure to respect these
instructions.
Comments:
 Check the marking on the cabinet to ensure its supply voltage.
 The flow meter is intended for an overvoltage category II installation.
1.11 Environment for use of the cabinet
 Cabinet: –25°C to 50°C
 Hygrometry: 80% maximum
 Ventilation: no specific precautions.
Warning: This flow meter is a class A device. In a residential environment, it may cause radio-frequency
interference. In this case, the user may be asked to take appropriate measures.
1.12 Cleaning the flow meter
Use a dry cloth to clean the screen and the keypad.
The box may be cleaned with water, diluted alcohol or detergent using a sponge or a soft cloth. Do not use
abrasive materials or solvents.
1.13 Composition of a measuring point
Apart from the electronic converter (the cabinet), a measuring point includes the following elements:

1 to 8 pairs of probes
 1 to 16 special cables for the probes (provided by Ultraflux)
 1 to 4 level measurements per channel (which may or may not be provided by Ultraflux)