Patent ID: 7921721

Claim:
An oil-filled pressure transducer, comprising: a glass pre-form having a plurality of pin accommodating apertures and having an oil tube accommodating aperture, said glass pre-form having a top and bottom surface, with said apertures extending between said surfaces, a plurality of contact pins each inserted into and associated with one of said pin accommodating apertures and extending from said top to said bottom surface of said pre-form, an oil fill tube inserted in to said oil tube accommodating aperture and extending from said bottom to said top surface of said pre-form with one end of said tube extending above said top surface of said pre-form, a glass alignment plate having an alignment aperture for encircling said extended oil fill tube at said top pre-form surface and having a sensor accommodating shaped aperture located at a predetermined position from said alignment aperture, a sensor module inserted in said shaped aperture and having contacts which are aligned with said pins to contact said pins when said sensor is positioned in said shaped aperture, a header having a central aperture surrounded at a top surface by a peripheral flange with said sensor as positioned on said pre-form, secured in said header aperture, a diaphragm covering said top surface of said header to create a space between the top surface of said sensor and the bottom surface of said diaphragm which space is determined by the height of said flange and the thickness of said alignment glass secured to said pre-form to provide an oil accommodating area for containing a volume of oil to substantially reduce back pressure as compared to a conventional transducer of the same size.