Tecfluid MX4 For FLOMAT Series - Manual (Page 7)

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4.1 Sensor position
The optimum position to install the sensor is with the electrodes in the side of the pipe.
This way, air pockets at the top of the pipe are avoided.
4.2 Straight pipe sections
The point where the FLOMAT sensor will be installed must be a straight pipe section,
separated from elements that can disturb the flow profile, such as elbows, diameter
changes, etc. Depending on the element the minimum necessary distances upstream
from the sensor are shown on the next page (BS 1042-2.2:1983 standard):
4 INSTALLATION
This should be made in a straight pipe run that guarantees that the pipe is always
completely full and where there is a fully developed turbulent flow profile (follow
indications on point 4.2).
Avoid high points of the pipes where air pockets usually formed, or pipes with downwards
flow where vacuums can be formed.
Partially full pipes can produce important reading errors.
Flow rate measurement with open discharge makes it necessary to install the flowmeter in
a pipe section with a siphon which avoids stagnation of air in the sensor.
INSTALLATION
4