Measuring and testing – Liquid level or depth gauge – Hydrostatic pressure type
Patent
1981-05-11
1983-03-08
Birmiel, Howard A.
Measuring and testing
Liquid level or depth gauge
Hydrostatic pressure type
73299, 340614, G01F 2316
Patent
active
043757642
ABSTRACT:
A liquid level system employs a pair of vertically spaced sensors in a tank such as a boiler. Each sensor includes a pair of bellows. The first bellows is enclosed by a protective enclosure while the second bellows is exposed to the interior of the tank. The first bellows of the two sensors are interconnected and filled with a liquid forming substance, such as an alkali metal, which is in liquid phase at high temperatures, while the second bellows of each sensor and the enclosure for the first bellows are interconnected and filled with a second liquid-forming substance, such as a metal alloy, which is essentially inert. A transducer is connected to one of the second bellows which produces an electrical output signal proportional to the difference between the pressures at the locations of the second bellows and, thus, the level of liquid in the tank.
REFERENCES:
patent: 1733616 (1929-10-01), McNeill
patent: 3038336 (1962-06-01), Peters
patent: 4109531 (1978-08-01), Lawford et al.
patent: 4332166 (1982-06-01), Lawford
Austin Robert R.
Lawford Victor N.
Birmiel Howard A.
IT&T
Kristofferson T. E.
Peterson T. L.
Stolzy A. D.
LandOfFree
Liquid level system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Liquid level system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Liquid level system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1732387