Ultraflux Uf 841, User Manual

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NT UF 841 CP GB (d) / June 2015
1.2 Functions
The UF 841 is an ultrasonic flow meter used to measure flows using the transit time difference method.
The measurement can be taken using an installation with up to 4 ultrasonic measurement chords. (One
chord designates the acoustic path between two probes, each alternating between emitting and receiving.
The use of several chords is above all required when the hydraulic conditions are poor and high accuracy is
required).
1.3 Dimensions and weight
•
Height: 160 mm
•
Width: 142 mm
•
Depth: 273 mm (including glands)
•
Weight: 12 kg
1.4 Operating environment
•
For internal or external use
•
Temperature: -20°C to +50°C
•
Hygrometry: 80 % maximum
•
Ventilation: no specific precautions
•
Maximum altitude: 2,000 metres
•
Danger zone: ATEX zone 1 / 2 / 21 / 22 - Class 1 / Class 2 division 1 or 2
1.5 Protection against dust and immersion
IP 67 : Total protection against dust; protection against immersion for 30 minutes under 1m of water. This
protection is only valid if the installation has been carried out or audited by Ultraflux.
This seal is only effective when the glands and/or plugs are in place and tightened (tightening torque
checked).