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4
MOUNTING THE INSERTION FITTING
The sensor is normally supplied mounted in its insertion fitting. Before welding the fitting to
the pipe , the sensor must be removed to avoid irreparable damage due to excessive
temperatures.
There are two basic types of insertion fitting: threaded fitting and flange fitting.
For the smaller pipe diameters (DN40, 50 & 65) the insertion fitting is supplied fitted to a
short length of pipe with a "T" form. For this type just couple it to the pipe by welding or
gluing in the case of PVC .
135......145
For DN80 and greater, there are three lengths for each of the two types of fittings.
The process of putting the insert in should be done with some precision. The distance (H)
(see drawings on next page) which is what the insert should protrude above the surface of
the pipe is important.
As shown in the table on the next page, to know the distance, the thickness of the pipe (s)
must be known.
To help to position the insert in the pipe, on the side of the insert there is a label with
markings indicating the position of the internal pipe diameter for each DN. Cut this label
above the line corresponding to the DN of the pipe, at a distance equal to the pipe
thickness. Peel off the bottom part of the label. Once the insert is placed into its final
position, where the label was cut must coincide with the exterior of the pipe.
This ensures that the measuring electrodes penetrate far enough in the area of flow profile
that will allow an accurate measurement.
7
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