Tecfluid TM Series - Manual (Page 4)

4
1 WORKING PRINCIPLE
One helical rotor turns freely inside a cylindrical tube.
The working liquid pushes the rotor blades, making them turn at a flow speed which is
proportional to the flow rate.
A pick-up coil mounted externally receives the propeller turns and generates an electrical
signal which, once treated by the different electronic converters, can provide flow rate
indication, total or partial volume, digital and analog outputs.
2 RECEPTION
The TM turbine flowmeters are supplied individually packed 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.
2.1 Unpacking
Unpack the instrument carefully, removing any remains of the packing from the inside of
the sensor.
2.2 Storage temperature
-20ºC ... +60ºC
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.