Tecfluid TM Series - Manual (Page 5)

5
3.1 Filter
A filter should be installed before the turbine to guarantee correct working and avoid
expensive damage. The filter should have a mesh size of maximum of 200 µm to avoid
larger particles that may block the turbine propeller .
3.2 Open discharge
When the flow measurement is to be made before an open discharge, it is necessary to
install the flowmeter in a section of pipe with a trap which avoids the presence of air inside
the meter.
3.3 Position
The installation and position of the turbine flowmeter can be either vertical, horizontal or
inclined. Make sure that the flow direction is as marked by the arrow on the turbine body.
3.4 Straight pipe sections
To obtain good readings, turbulences must be avoided. For this it is necessary to have
straight sections of pipe upstream and downstream of the turbine. The straight pipe
sections must be of the same internal diameter as the turbine and the minimum lengths
must be the following:
Upstream 10 DN
Downstream 7 DN
These sections must be free of deviations or disturbing elements (valves etc.).