Title:
TRIHALOMETHANE ANALYZER
Document Type and Number:
Japanese Patent JP3018739
Kind Code:
B2
Abstract:
PURPOSE: To keep the output constant within the operating temperature range by eliminating the effect of the outside air temperature on a detection section.
CONSTITUTION: A heat insulating material 31a and a heat ray absorbing filter 32 are fitted to the condensing lens 25a of a projection optical system radiating the light to the flow cell of a fluorescence detector 15a, and the heat conduction from a light source 23 to a flow cell block 24a is cut off. The flow cell block 24a is covered with a heat insulating material 31b to keep it at the proper temperature, a detection section is not affected by the outside air temperature, the output change of the fluorescence intensity of a trihalomethane analyzer under the operating temperature condition (10 to 40°C) is made very small, and a constant output can be invariably measured in the stable state.
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Inventors:
Koji Kawakami
Yoshiharu Tanaka
Yasushi Zaitsu
Yuusuke Nakamura
Yoshiharu Tanaka
Yasushi Zaitsu
Yuusuke Nakamura
Application Number:
JP13291192A
Publication Date:
March 13, 2000
Filing Date:
May 26, 1992
Export Citation:
Assignee:
Fuji Electric Co., Ltd.
International Classes:
G01N21/64; G01N21/78; G01N31/00; (IPC1-7): G01N21/78; G01N21/64; G01N31/00
Domestic Patent References:
| JP3218461A |
Attorney, Agent or Firm:
Masaharu Shinobe