Title:
GAS PRESSURE DETECTING DEVICE
Document Type and Number:
Japanese Patent JP3189516
Kind Code:
B2
Abstract:
PURPOSE: To provide a highly safe and reliable gas pressure detecting device for LP gas and town gas which is subjected to gas-resisting treatment, and can detect the leak to limit leaked gas quantity at minimum if the gas is leaked.
CONSTITUTION: A semiconductor pressure sensor element 1 is held on the upper surface of the pressure inlet pipe 4 of a sensor case 5 having a lead frame 3 and the pressure inlet pipe 4 integrally molded through a gas-resisting adhesive 2 in the airtight state to constitute a pressure detecting passage. An electric circuit such as amplifying circuit is formed on a circuit board 10, and the internal part is housed in a resin case 6 coated with a potting agent 11. A pressure chamber 13 holding the sensor case 5 in the air tight state is provided around a pressure regulating hole 12 above it through an adhesive 9.
Inventors:
Toshinori Arai
Kosaku Kubo
Shinji Miyauchi
Kosaku Kubo
Shinji Miyauchi
Application Number:
JP19707493A
Publication Date:
July 16, 2001
Filing Date:
August 09, 1993
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
G01F1/00; G01L9/00; G01L9/04; G01L19/00; G01L19/12; (IPC1-7): G01L9/04; G01L19/00
Domestic Patent References:
| JP4102036A | ||||
| JP5196532A | ||||
| JP2170032A | ||||
| JP576042U | ||||
| JP447642U |
Attorney, Agent or Firm:
Fumio Iwahashi (2 others)
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