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 .
WRONG
RIGHT
FLO
W
FLO
W
FLO
W
WRONG
FLO
W
RIGHT
Do not install in a vertical, downward position .
Position “On/Off” valves on downstream side .
Figure 12: Incorrect meter placement
Figure 13: 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 sensor to remain full of liquid at all times .
Figure 14: Pipe positioned to keep water in sensor
Meter Location, Orientation and Applications
Page 14
March 2022
MAG-UM-01272-EN-21
