G - Physics – 01 – F
Patent
G - Physics
01
F
73/175, 116/69
G01F 23/02 (2006.01)
Patent
CA 1161666
(39 051 ) INVENTION: A LIQUID LEVEL INDICATOR APPARATUS ABSTRACT OF THE DISCLOSURE A liquid level indicator apparatus including a selecting means intended to indicate the level of at least two liquid bodies. The apparatus comprises a chamber having a display tube and containing an indicator liquid. An air passage is connected between the chamber and the selecting device. Air conduits extend from the selecting device to the liquid bodies,whereby these air conduits and dip tubes are immersed in the liquid bodies. The indicator apparatus contains an air displacing member. Upon operation of the air displacing member the volume of the liquid which level is to be measured present inside the dip tube is expelled due to the air pressure built up inside the conduit. There- after the pressure of the liquid body is brought into communication with the chamber containing the indicator liquid, such that the level of the indicator liquid inside the display tube is raised to a level corresponding to the level of the selected liquid body. By means of a pivotably arranged selecting member any one of the liquid bodies may be brought into communication with the indicating apparatus. The switching member is guided by notches and projections therebetween, such that it moves adjacent to any notch defining a selected position axially of the air passage such that when the switching member is in any selected position an airtight connection is established between the switching member and the air passage. The switching member is spring biassed against the notches. - 2 -
373900
Gowling Lafleur Henderson Llp
Ingenjorsfirman Installationsjanst Ab
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