Thermal system for measuring liquid levels

Details Thermal system for measuring liquid levels Thermal system for measuring liquid levels

G - Physics

01

F

73/73

G01F 23/22 (2006.01) G01F 23/24 (2006.01)

Patent

CA 1233667

-19- DESCRIPTIVE ABSTRACT Thermal liquid level measuring system comprising a heat sensor with a measuring resistor (2) and a sheathed (1) heating resistor (3), the latter being supplied in pulse-like manner. The signal from the measuring resistor is connected to the inputs of two filters (20, 22) extracting the d.c. component and the a.c. component from the measuring signal. In a computing module (29), the value of the liquid level and its temperature are determined on the basis of output signals from filters (20, 22) and a signal supplied by temperature measuring means (12, 13) with respect to the liquid and the gaseous medium above the liquid. (Figure 3).

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