Pressure measuring device

Details Pressure measuring device Pressure measuring device

1988-05-11

1989-07-04

Orsino, Joseph A.

Measuring and testing

Fluid pressure gauge

Diaphragm

73729, 338 32H, G01L 914, G01L 710

Patent

active

048438863

ABSTRACT:
The pressure measuring device has a housing in which a pressure chamber is located in a pin extending freely in the interior of the housing from a base. The pressure chamber wall is deformable elastically under an applied pressure. In the free end portion of the pin a magnetoresistive sensor is mounted which is moved with the chamber wall in a displacement occurring because of pressure changes in the chamber and thus is displaced relative to a permanent magnet. The magnet is mounted slightly transversely in the end portion of a compensating sleeve which surrounds the pin with wall contact. The change of the magnetic field at the sensor on displacement causes a proportional resistance change of the sensor so that an electrical signal proportional to the pressure change is generated which is a measure of the pressure. An amplifier for the signal from the magnetoresistive sensor can be mounted inside the housing adjacent the permanent magnet or the magnetoresistive sensor. Also advantageously the space between the housing and the compensating sleeve can be filled with insulation to further reduce temperature compensation requirements.

REFERENCES:
patent: 1422256 (1922-07-01), Conrad et al.
patent: 1744590 (1930-01-01), Sutherland
patent: 4006402 (1977-02-01), Mincuzzi

Affiliated with

Also associated with

Rating

Pressure measuring device does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-843164