Title:
CONTROL DEVICE FOR LIQUID LEVEL POSITION
Document Type and Number:
Japanese Patent JP3879602
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a control device for liquid level position which requires no motive power to adjust the liquid level of test fluid and prevents the test liquid from being volatilized resulting from heating, an environment from becoming worse owing to volatilization, and the test fluid from being oxidized by coming into contact with oxygen.
SOLUTION: A port 43 is opened at a predetermined position which is installed as the liquid level of the test fluid in a storage part 20. When the liquid level of the test fluid becomes higher than the port 43, the port 43 is closed to stop supplying nitrogen from the storage part 20 to a liquid tank 30, so the pressure in the storage part 20 rises and the test fluid reflows to the liquid tank 30. When the liquid level position of the test fluid becomes lower than the port 43, on the other hand, the port 43 is opened to supply nitrogen from the storage part 20 to the liquid tank 30, so the pressure in the liquid tank 30 rises to supply the test fluid to the storage part 20. Consequently, the liquid level position of the test fluid can be adjusted to the constant position by pressure balance of nitrogen without any motive power.
Inventors:
Kunihiko Suzuki
Hiromi Sakai
Hiromi Sakai
Application Number:
JP2002187299A
Publication Date:
February 14, 2007
Filing Date:
June 27, 2002
Export Citation:
Assignee:
株式会社デンソー
International Classes:
G05D9/02; (IPC1-7): G05D9/02
Domestic Patent References:
| JP1271808A | ||||
| JP2004019547A | ||||
| JP2004011452A |
Attorney, Agent or Firm:
Masaki Hattori