Tecfluid COVOL Series - Manual (Page 5)

5
2 RECEPTION
COVOL oscillating piston flowmeters are supplied individually packaged for protection during
transport and storage, including their corresponding instructions manual, for their installation
and use.
All the flowmeters have been verified in our flow rigs, obtaining the K factor for each
device.
3 INSTALLATION
The installation must be made in a point that ensures that the pipe is completely full of
liquid.
Highest points in the installation as well as downwards pipes must be avoided, since air
pockets or vacuums might occur.
In installations where air can be present, a degasser must be installed before the
flowmeter.
Partially full pipe can involve important measurement errors.
3.1 Filter
The installation of a filter before the COVOL oscillating piston is mandatory. This way a
correct performance is guaranteed and severe damage is avoided.
The mesh size must be between 0.1 and 0.2 mm², in order to avoid that bigger particles
can block or get embedded in the oscillating piston, stopping or slowing it and providing
false readings.