Tecfluid FLOMID Series - Manual (Page 4)

4
Pumps should be mounted upstream from
the sensor to avoid the suction part of the
pump (vacuum) that could damage the
sensor liner (see the table on page 8).
If there is a point where the difference in level
is greater than 5 m an air inlet valve should
be installed after the sensor to avoid a
vacuum effect that could damage the sensor
liner (see the table on page 8).
Control valves or stop cocks should
always be installed downstream from the
sensor to assure that the pipe is always
full of liquid.
Reduction of the DN
In installations where, for reasons of the
flow rate to be measured, a sensor of a
smaller DN than the pipe DN must be
mounted, the reduction must be done with
an angle smaller than 4º to avoid
turbulences that can give false readings.
If the reduction angle is greater then the
straight pipe sections indicated on the
previous page must be respected.
α
α < 4º
α > 4º
α