Ultraflux Uf 841, User Manual

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NT UF 841 CP GB (d) / June 2015
5.2 Main configuration elements
5.2.1 Number of channels
Note: for multi-channel flow meters only, it is possible to define the number of channels to be managed by
the flow meter.
The geometric and physical description of the measuring point must then be produced for each channel.
In the case of several channels, the channels are named in alphabetical order (A, B...). Qa, Qb... are the
flows calculated for each channel. Qt is the total flow.
5.2.2 Description of the pipe
The pipe is described by its outside diameter (or equivalent sectional diameter) and the physical
characteristics of the material(s) of which it is made.
•
In "simple" configuration: you must define the outside diameter, the thickness of the material and
the type of material. The fluid must be water.
•
In "normal" configuration: you can choose the fluid from a list. This list depends on your flow meter
type (gas or liquid).
•
In "advanced" configuration: you can define a wall with up to 3 different materials/layers (see §
5.6.1).
Two different types of probe may be used:
•
External (clamp-on) probe:
the probe is "placed" on the outside of the pipe. The "clamp-on" probes
may be positioned in direct (/), reflex (V), N or W configurations.
•
Intrusive mode (wet probe):
a hole must be drilled in the pipe to install the probes, or the probes
must be installed directly on a sleeve (welded or fixed by flange). Intrusive probes can be placed in
parallel or diametric planes.
Note: The number of chords must be chosen depending on your application and the authorised limit for
your flow meter type.
5.3 Configuring the Uf 841
The configuration for the flow meter is divided into three levels:
•
Simple: simplified configuration for basic use of the flow meter.
•
Normal: configuration allowing more detailed use.
•
Advanced: mode allowing the complete adjustment of the flow meter settings. This mode is
reserved for users with detailed knowledge of the transit time difference flow measuring technique
and with some idea of hydraulic concepts.