Measuring and testing – Fluid pressure gauge – Electrical
Patent
1998-08-25
2000-09-26
Fuller, Benjamin R.
Measuring and testing
Fluid pressure gauge
Electrical
73715, G01L 900, G01L 708
Patent
active
061229741
ABSTRACT:
A pressure sensor superior in pressure resistance and capable of covering from a low to high pressure range as a measuring range is to be provided. Plural pressure sensing sections for high and low pressures are formed on a silicon board, the pressure sensing sections each com ing an outer frame portion, a diaphragm portion, a strain gauge portion and an electrode portion. The silicon board side with the strain gauge portions formed thereon and an insulating substrate having electrode take-out portions are bonded together in such a manner that the strain gauge portions are hermetically sealed and that the electrode portions on the silicon board and the electrode take-out portions of the insulating substrate are electrically connected with each other, to constitute a pressure sensing unit. The pressure sensing unit, a low-melting glass and a stem are laminated together in such a manner that lead pins are electrically bonded by solder to the electrode portions of the silicon board through the electrode take-out portions of the insulating substrate. In this state, the low-melting glass is melted to bond the pressure sensing unit and the stem with each other.
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Kubota Masanori
Miki Masayuki
Miyazaki Atsushi
Sasada Yoshiyuki
Sato Shin-ya
Aw-Musse Abdullahi
Fuller Benjamin R.
Hitachi , Ltd.
Hitachi Car Engineering Co. Ltd.
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