Installation Gammapilot M FMG60 PROFIBUS PA
14 Endress+Hauser
3.2.3 Installation conditions for density and concentration measurements
Conditions
• If possible, density and concentration should be measured on vertical pipes with forward
flow from bottom to top.
• If only horizontal pipes are accessible, the path of the beam should also be arranged
horizontally to minimize the influence of air bubbles and deposits.
• The Endress+Hauser clamping device FHG61 or an equivalent clamping device should be
used to secure the radiation source container and the Gammapilot M to the measuring tube.
The clamping device itself must be installed in such a way that it can withstand the weight
of the source container and the Gammapilot M under all anticipated conditions.
• The sample point may not be further than 20 m (66 ft) from the measuring point.
• The distance of the density measurement to pipe bends is ≥3 x pipe diameter, and ≥10 x
pipe diameter in the case of pumps.
Measuring system arrangement
The arrangement of the source container and the Gammapilot M depends on the pipe
diameter (or the length of the irradiated measuring path) and the density measuring range.
These two parameters determine the measuring effect (relative change in the pulse rate). The
measuring effect increases with the length of the radiation path through the medium.
Therefore, it is advisable to use diagonal irradiation or a measurement section for small pipe
diameters.
To select the measuring system arrangement please contact your Endress+Hauser sales
organization or use the Applicator™
1)
1) configuration software. The Applicator™ is available from your Endress+Hauser sales organization.
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