The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 17, 1998
Filed:
Jul. 09, 1996
Michael Wisskirchen, Neukirch, DE;
AWECO Kunststofftechnik Geraetebau GmbH & Co. KG, Neukirch, DE;
Abstract
A method for calibrating a sensor for sensing the level of a liquid. The sensor includes: a frame; a pressure transducer disposed on the frame; an electrical switch disposed on the frame and operatively connected to the pressure transducer; a mechanical transmission operatively connecting the pressure transducer and the electrical switch to one another; and an immersion tube operatively connected to the frame and defining a closure limit location thereon, the sensor further being configured such that, when the level of the liquid rises beyond the closure limit location of the immersion tube along a longitudinal extent thereof, a volume of air is trapped in the sensor, the pressure transducer being configured for recording a pressure of the volume of air, the pressure transducer further being configured for actuating the electrical switch via the mechanical transmission when the level of the liquid rises beyond the closure limit location up to an actual switching level on the immersion tube. The method includes the step of compensating for a variation between the actual switching level on the immersion tube and a desired switching level on the immersion tube caused by random production differences of the sensor by shifting the closure limit location in a direction parallel to the longitudinal extent of the immersion tube.