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.
WRONG
FL
OW
Figure 12: Incorrect Meter Placement
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.
FL
O
W
WRONG
FL
OW
RIGHT
Do not install in a vertical, downward position.
Position "On/Off" valves on downstream side.
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 ensures the detector remains full of liquid at all times.
Figure 14: Pipe Positioned to Keep Water in Detector
SSK
513
Electromagnetic Flow Meter
Page 12
March 2014