Apparatus for measuring and indicating the fluid level in vessels
First Claim
1. An apparatus for measuring and indicating the fluid level in vessels comprising a mechanically operating arrangement or a pulse device for initiating a vibration of the vessel wall, a transducer for sensing the oscillation progress varying both in frequency and amplitude with the degree of filling of the vessel, and a processing unit for evaluating the output signal of the transducer and passing the result to an indicator.
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Abstract
The invention relates an apparatus for measuring and indicating the fluid level in a vessel, such as larger LP-gas tubes for household purposes.
A pulse device is used for causing the vessel wall to vibrate, for example by causing a striking pin momentarily to thrust against the wall, and for scanning the oscillation frequency of the wall varying with the filling degree of the vessel. A transducer is provided which, for example, is a piezoelectric element abutting the wall. The output signal from the element is passed to a processing unit for evaluating the signal, and the result is passed to an indicator, which may be of the analog or digital type.
17 Citations
10 Claims
- 1. An apparatus for measuring and indicating the fluid level in vessels comprising a mechanically operating arrangement or a pulse device for initiating a vibration of the vessel wall, a transducer for sensing the oscillation progress varying both in frequency and amplitude with the degree of filling of the vessel, and a processing unit for evaluating the output signal of the transducer and passing the result to an indicator.
Specification