Cryogenic liquid level measuring apparatus

Details Cryogenic liquid level measuring apparatus Cryogenic liquid level measuring apparatus

1989-07-27

1991-05-28

Cuchlinski, Jr., William A.

Measuring and testing

Liquid level or depth gauge

Thermal type

73301, 73299, G01F 2300

Patent

active

050183877

ABSTRACT:
An apparatus for measuring a level of a cryogenic fluid in a cryostat includes a semiconductor pressure sensor mounted at the end of an elongated vertically disposed tube. The semiconductor pressure sensor is located at the bottom of the tube and is sealed in the bottom of the tube by a polymeric insulating material. The upper end of the tube is provided with a vent hole which communicates vapor pressure within the cryostat to the interior of the tube. The pressure sensor outputs an electrical signal in accordance with the differential pressure exerted on a semiconductor element of the pressure sensor from opposite sides by the vapor pressure within the tube and the fluid pressure outside the tube.

REFERENCES:
patent: 3421538 (1969-01-01), Hembree
patent: 3918018 (1975-11-01), Tuley et al.
patent: 4368639 (1983-01-01), Owens
patent: 4788648 (1988-11-01), Ferretti et al.
patent: 4843883 (1989-07-01), Glover et al.

Affiliated with

Also associated with

Rating

Cryogenic liquid level measuring apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Cryogenic liquid level measuring apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cryogenic liquid level measuring apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-27448