Leadless oil filled pressure transducer

Details Leadless oil filled pressure transducer Leadless oil filled pressure transducer

2011-04-12

2011-04-12

Allen, Andre J (Department: 2855)

Measuring and testing

Fluid pressure gauge

Combined

Reexamination Certificate

active

07921721

ABSTRACT:
An oil-filled pressure transducer including a glass pre-form having contact pins and a oil-filled tube, each running top to bottom through holes in the pre-form. The oil-filled tube extends beyond the top of the pre-form. A glass alignment plate has an alignment aperture designed to fit over the extended oil-filled tube and-another aperture placed at a predetermined position from the alignment aperture which is shaped to accommodate a sensor. When the plate is aligned over the oil-filled tube, a sensor module can be positioned accurately in the alignment aperture so that contact is made with the pins. A header having a central diaphragm is placed over the pre-form and the aligned sensor creating a space between the diaphragm and the sensor which is filled with oil. The transducer utilizes less oil and exhibits a lower backpressure with increasing temperature than other oil-filled pressure transducers of similar size.

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