KROHNE CORIMASS G-MFM 4085 EN - Manual (Page 14)

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The converter must not be insulated or heated. For Ex meters refer to ‘important note’ in
‘Insulation’ section above.
In all cases, the installation factor should be monitored and maintained within the normal
levels.
Figure 17
1.3.3 Hot Fluid or Steam Heating
Where pipelines are jacketed with concentric pipes, carrying a hot fluid such as water or steam,
follow the following recommendations.
The jacket should be of as small a diameter as possible and the wall thickness should be as thin
as possible (figure 18).
A radial gap between the process pipe and the inside of the jacket of 5-6mm is suitable.
The minimum clamping distance is increased (figure 18). The first clamp should be moved
further away from the meter.
It is an advantage to avoid process pipework of a large diameter compared to the meter bore.
Krohne can provide further guidelines and dimensions of suitable pipes and jackets.
The jacket must be completely filled with no air pockets present.
Any clamps or supports must be applied at a distance greater than L.
Figure18