Title:
FLOW RATE CORRECTING DEVICE
Document Type and Number:
Japanese Patent JP3679174
Kind Code:
B
Abstract:
PROBLEM TO BE SOLVED: To prevent an operation switch from being freely operated by a third person since the display content can be understood when the third person looks at a display unit in the case where the operation switch of the display unit is arranged on the front face of a device.
SOLUTION: In a flow rate correcting device 11, a display window 19 opposed to a liquid crystal display unit 18 arranged in a housing is arranged on the front face of a cover 17 of the housing. A key switch 20, a rotary switch 21 and a push-button switch 22 are arranged on the front face of the cover 17. The display content of the liquid crystal display unit 18 can be selectively switched by a combination of the key switch 20 and a rotary operation position of the rotary switch 21. Therefore, since a third person having no key to be inserted into the key switch 20 can not freely operate the display content of the liquid crystal display unit 18 in a switching system, mischief by the third person can be prevented.
More Like This:
| JP11326161 | SAMPLING DEVICE FOR EXHAUST GAS |
| WO/1983/000924 | TEST DEVICE |
| WO/1996/037758 | METHOD AND DEVICES USED IN FLOW MEASUREMENT |
Inventors:
Iwakawa, Megumi
Negoro, Nobuo
Hojo, Toshiaki
Suzuki, Kazutaka
Negoro, Nobuo
Hojo, Toshiaki
Suzuki, Kazutaka
Application Number:
JP1995000315496
Publication Date:
May 20, 2005
Filing Date:
December 04, 1995
Export Citation:
Assignee:
OSAKA GAS CO LTD
TOKYO GAS CO LTD
TOHO GAS CO LTD
TOKICO LTD
TOKYO GAS CO LTD
TOHO GAS CO LTD
TOKICO LTD
International Classes:
G01F25/00; G01F25/00; (IPC1-7): G01F25/00