Endress+Hauser Flowphant T ODTT31 Operating Instructions Manual page 14

Mounting
3. Avoid crevices, folds or gaps.
4. Ensure the surface is honed and polished, Ra ≤ 0.76 µm (30 µin).
Pay attention to the following when installing the thermometer to ensure that the cleanability
is not affected:
1. The installed sensor is suitable for CIP (cleaning in place). Cleaning is carried out in
combination with tubing/piping or tank/vessel. In the case of internal tank fixtures
using process connection nozzles, it is important to ensure that the cleaning assembly
sprays this area directly so that it is cleaned properly.
2. The Varivent® connections enable flush-mounted installation.
NOTICE
The following action must be taken if a sealing ring (O-ring) or seal fails:
‣
The thermometer must be removed.
‣
The thread and the O-ring joint/sealing surface must be cleaned.
‣
The sealing ring or seal must be replaced.
‣
CIP must be performed after installation.
4.1.5 Inlet and outlet runs
NOTICE
The thermal measuring principle is sensitive to disturbed flow conditions.
‣
Install the measuring device as far away as possible from any flow disturbances. For further
information → ISO 14511.
‣
Install the sensor upstream from fittings such as valves, T-pieces, elbows etc.
‣
To attain the specified level of accuracy of the measuring device, the inlet and outlet runs
mentioned below must be maintained at the very minimum.
‣
If several flow disturbances are present, maintain the longest specified inlet run.
14
Flow switch ODTT31, ODTT35