Measuring and testing – Instrument proving or calibrating – Liquid level or volume measuring apparatus
Patent
1996-07-09
1998-03-17
Raevis, Robert
Measuring and testing
Instrument proving or calibrating
Liquid level or volume measuring apparatus
G01F 2312
Patent
active
057289280
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.
REFERENCES:
patent: 5079950 (1992-01-01), McKiernan et al.
AWECO Kunststofftechnik Geraetebau GmbH & Co. KG
Raevis Robert
LandOfFree
Calibration method for level sensors with pressure transducer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Calibration method for level sensors with pressure transducer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Calibration method for level sensors with pressure transducer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-959647