Tecfluid FLOMID Series - Manual (Page 3)

3
Mixtures
If liquids of different conductivities are mixed it is
necessary to install the sensor a minimum of 30 DN
from the point of mixture in order to obtain a uniform
conductivity of the liquid and stabilize the readings.
If this distance is less, the readings may be unstable.
INSTALLATION
This should be made in a point that guarantees that the pipe is always completely full.
Avoid high points of the pipes where air pockets usually form, or pipes with falling flow where
vacuums can form.
Partially full pipes can produce important reading errors.
Straight pipe sections
Are necessary before and after the
sensor. The minimum distances are
the following:
Upstream : 5 DN
Downstream : 3 DN
In installations with turbulent flow it
may be necessary to increase these
distances.
Sensor position
The most adequate position is
with the electrodes in a
horizontal plane. In this way,
deposits of particles on the
electrodes are avoided.
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.