Method for detecting the fill level quantity of a tank system
First Claim
1. A method for detecting a fill level of a tank system utilizing a pressure source, a bridge divider arrangement and a pressure measuring device;
- said pressure source being adapted to generate a change of pressure in said tank system;
said pressure divider arrangement having a reference measuring unit which can be charged with pressure by said pressure source and which includes at least one flow resistor of a predetermined size in at least one reference flow branch;
for checking tightness, said pressure measuring device simultaneously detecting the difference of the pressure in said tank system and of the pressure in said reference measuring unit, the method comprising the steps of;
continuously detecting the time-dependent trace of said difference pressure during at least one of a pressure build-up operation and a pressure decay operation; and
,drawing a conclusion as to said fill level from said time-dependent trace.
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Abstract
The invention is directed to a method for detecting a fill level of a tank system utilizing a pressure source, a bridge divider arrangement and a pressure measuring device. The pressure source is adapted to generate a change of pressure in the tank system. The pressure divider arrangement has a reference measuring unit which can be charged with pressure by the pressure source. The reference measuring unit further includes at least one flow resistor of a predetermined size in at least one reference flow branch. For measuring the tightness, the pressure measuring device simultaneously detects the difference of the pressure in the tank system and of the pressure in the reference measuring unit. In the method, the time-dependent trace of the difference pressure during at least one of a pressure build-up operation and a pressure decay operation is continuously detected. A conclusion is then drawn as to the fill level from the time-dependent trace.
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Citations
7 Claims
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1. A method for detecting a fill level of a tank system utilizing a pressure source, a bridge divider arrangement and a pressure measuring device;
- said pressure source being adapted to generate a change of pressure in said tank system;
said pressure divider arrangement having a reference measuring unit which can be charged with pressure by said pressure source and which includes at least one flow resistor of a predetermined size in at least one reference flow branch;
for checking tightness, said pressure measuring device simultaneously detecting the difference of the pressure in said tank system and of the pressure in said reference measuring unit, the method comprising the steps of;continuously detecting the time-dependent trace of said difference pressure during at least one of a pressure build-up operation and a pressure decay operation; and
,drawing a conclusion as to said fill level from said time-dependent trace. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- said pressure source being adapted to generate a change of pressure in said tank system;
Specification