Partially-Filled Pipe Situations
In some locations, the process pipe may be momentarily only partially filled. Examples include: lack of back pressure,
insufficient line pressure and gravity flow applications.
To eliminate these situations:
• Do not install the meter at the highest point of the pipeline.
• Do not install the meter in a vertical, downward flow section of pipe.
• Always position the ON/OFF valves on the downstream side of the meter.
• Turn ON Empty Pipe for applications or installations where the pipe is sometimes empty.
• Do not install the detector on the suction side of pumps. This could damage the liner (in particular PTFE liners).
• Do not install the detector on pipes with vibrations. If pipes are strongly vibrating, use a remote version.
FLOW
FLOW
Figure 13: Incorrect meter placement
FLOW
WRONG
FLOW
RIGHT
Do not install in a vertical, downward position. Position "On/Off" valves on downstream side.
Figure 14: Position valves on downstream side
To minimize the possibility of partially-full pipe flows in horizontal, gravity or low pressure applications, create a pipe
arrangement that allows the detector to remain full of liquid at all times.
Figure 15: Pipe positioned to keep water in detector
Meter Location, Orientation and Applications
MAG-UM-00219-EN-17 Page 13 June 2021
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