Method and device for producing absolute pressure-type...

Details Method and device for producing absolute pressure-type... Method and device for producing absolute pressure-type...

2005-06-16

2008-09-02

Allen, Andre J (Department: 2855)

Measuring and testing

Fluid pressure gauge

Mounting and connection

Reexamination Certificate

active

07418873

ABSTRACT:
There is provided a method and device for producing an absolute pressure type pressure sensor that enables a relative pressure type pressure sensor to be modified (converted) into an absolute pressure type pressure sensor in a simple and easy manner. The method is characterized by comprising: a step of arranging a relative pressure type pressure sensor, that has a reference pressure chamber therein, and a pressure guide hole whose one end communicates with the reference pressure chamber and the other end opens to the atmosphere, inside a vacuum chamber with the other end of the pressure guide hole opening upward; a step of placing a solder piece onto the other end of the pressure guide hole; a step of drawing a vacuum inside the vacuum chamber; and a step of heating the solder piece until the solder melts.

REFERENCES:
patent: 4314225 (1982-02-01), Tominaga et al.
patent: 4930353 (1990-06-01), Kato et al.
patent: 5173836 (1992-12-01), Tomase et al.
patent: 7176541 (2007-02-01), Tanaka et al.
patent: 0 849 578 (1998-06-01), None
patent: 58-63826 (1983-04-01), None

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