Endress+Hauser Prosonic Flow 90, Operating Instructions Manual

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Proline Prosonic Flow 90 7 Maintenance
Hauser 73
7 Maintenance
The Prosonic Flow 90 flow measuring system requires no special maintenance.
Exterior cleaning
When cleaning the exterior of measuring devices, always use cleaning agents that do not attack the
surface of the housing and the seals.
Coupling fluid
A coupling fluid is required to ensure the acoustic link between the sensor and the piping. This is
applied to the sensor surface during commissioning. Periodic replacement of the coupling fluid is
usually not required.
A0001144
Fig. 48: Application of the coupling fluid
1 Coupling fluid
2 Sensor surface Prosonic Flow W/P
3 Sensor surface Prosonic Flow U
2
3
1