Proservo NMS5
Hauser
27
4.5
Preparation for Mounting of NMS5
4.5.1
Flange
A nozzle and a flange should be prepared prior to mounting NMS5 on the tank. The flange size and the rating
of NMS5 vary depending on the customer’s specifications.
Note!
•
Check the flange size of NMS5.
•
Mount the flange on the top of the tank. The deviation of the flange from the horizontal plane should not
/- 1 degree.
•
When mounting NMS5 on a long nozzle, ensure that the displacer does not touch the inner side of the noz-
zle when the nozzle is in the vertical position.
Figure. 23:
Allowable Inclination of Mounting Flange
Note!
When NMS5 is installed without a guide system, follow the recommendations below:
•
Set the mounting nozzle in the sector between 45 and 90 deg (or -45 and -90 deg.) apart from the inlet
pipe of the tank. This prevents heavy swing of the displacer caused by wave or turbulence of the inlet liquid.
•
Set the mounting nozzle at 500mm or more away from the tank wall. Ensure that the measurement is not
influenced by changes of the ambient temperature.
•
Set the minimum measuring level at 500mm or more above the top of the inlet pipe. This protects the
displacer from direct flow of the inlet liquid.
•
If the stilling well can not be mounted in the tank due to the shape or condition of a tank, attaching a guide
system is recommended. Consult E+H services for further information.
Figure. 24:
Recommended Setting of Mounting Nozzle and Minimum Measuring Level
Caution!
•
Before pouring liquid into the tank, confirm that liquid flowing through the inlet of the pipe does not touch
the displacer directly.
•
When discharging liquid of the tank, ensure that the displacer does not get caught in the liquid current and
sucked into the outlet pipe.
Mounting Nozzle
max. +1°
max. -1°
-90°
90°
-45°
45°
0°
Inlet
Pipe
Mounting
Nozzle
Mounting
Nozzle
Minimum Measuring Level
õMM
Inlet
Pipe
õMM
4 Mounting of NMS5
