Tecfluid LP Series - Manual (Page 4)

4
1 WORKING PRINCIPLE
Based on Archimedes principle of a body immersed in a liquid.
A rod with a density similar to the operation liquid is suspended by a spring to maintain
an equilibrium with its weight.
Variations in the liquid level causes a change of the weight of the rod (partially
immersed), that can be measured by means of the extension or compression of the
spring.
Variation on the spring length is transmitted to the indicating needle by means of
magnetic coupling.
2 RECEPTION
The LP level displacers are supplied tested in our facilities, ready for installation and
service.
The level meters are supplied conveniently packaged for transportation and storage.
2.1 Unpacking
Unpack the instrument carefully, removing any remains of the packing from the inside of
the sensor.
It is recommended to check that the measuring system is mechanically correct by means
of the following verification:
The indicating needle is initially at 100% of the scale at the top. Pull slowly on the hook
under the coupling piece to the tank.
A progressive and even resistance will be noted until the end stop is reached. When
pulling on the hook the indicating needle will move towards the beginning of the scale.