초록 ▼

A continuous liquid level measurement system is disclosed which is based upon a differential pressure measurement. The pressure of the liquid level to be measured is calibrated with a second pressure measurement of the pressure above the liquid in order to get a more accurate pressure measurement wh

A continuous liquid level measurement system is disclosed which is based upon a differential pressure measurement. The pressure of the liquid level to be measured is calibrated with a second pressure measurement of the pressure above the liquid in order to get a more accurate pressure measurement which is related in a predetermined manner to the level of the liquid. For instances in which the liquid to be measured is in a harsh environment, the invention provides for a means for mounting the sensitive pressure measurement devices remotely from the liquid.

대표청구항 ▼

[ What is claimed:] [1.]1. A continuous liquid level measurement system, comprising:a shaft having a proximal end and a distal end;a differential pressure transducer disposed at the proximal end and having a first pressure input and a second pressure input;a flexible bladder disposed at the distal e

[ What is claimed:] [1.]1. A continuous liquid level measurement system, comprising:a shaft having a proximal end and a distal end;a differential pressure transducer disposed at the proximal end and having a first pressure input and a second pressure input;a flexible bladder disposed at the distal end;a first pressure transmission tube disposed within the shaft and coupling the bladder to the first pressure input for substantial equalization of pressure therebetween;a reference pressure port formed in the shaft proximal of the bladder; anda second pressure transmission tube disposed within the shaft and coupling the reference pressure port to the second pressure input for substantial equalization of pressure therebetween;wherein when the bladder is placed below the liquid level and the reference pressure port is placed above the liquid level, the differential pressure transducer will measure a pressure of the liquid on the bladder, and thus the liquid level.