JPS552959A - Automatic cod measuring device - Google Patents

Automatic cod measuring device

Info

Publication number
JPS552959A
JPS552959A JP7615278A JP7615278A JPS552959A JP S552959 A JPS552959 A JP S552959A JP 7615278 A JP7615278 A JP 7615278A JP 7615278 A JP7615278 A JP 7615278A JP S552959 A JPS552959 A JP S552959A
Authority
JP
Japan
Prior art keywords
tank
water
weighing
tested
opened
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP7615278A
Other languages
Japanese (ja)
Inventor
Yoshio Kamahori
Younosuke Nakahara
Toshiaki Yamamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sharp Corp filed Critical Sharp Corp
Priority to JP7615278A priority Critical patent/JPS552959A/en
Publication of JPS552959A publication Critical patent/JPS552959A/en
Pending legal-status Critical Current

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  • Automatic Analysis And Handling Materials Therefor (AREA)

Abstract

PURPOSE: To obtain constantly accurate measurement results, to take most reliable COD values of the oxidation capacity of oxidation-reduction agents through electronic control.
CONSTITUTION: The water to be tested is introduced into a weighing tank 3 from a test water sipply pipe 2 with a pinch valve 1 opened. The diluent water to be tested is led into said weighing tank 3 from a diluent tank 5 through a supply pipe 6 with a pinch valve 4 opened. Said weighing tank 3 has a capacity of 20ml for example. Excess water is drained through an overflow pipe 7. The water and diluent water in said weighting tank 3 are introduced into a measuring tank 10 through a conduit 9 with a pinch valve 8 opened. Further given kinds of reagent are fed to a reagent weighing tank 18 from reagent storage tanks 16W17 by pumps P1 and P2 for weighing, and into said measuring tank 10 through an auxiliary weighing tank 19 to measure the COD value of the water to be tested. The oxidation reduction potential in said measuring tank 10 is detected by a detecting electrode 11. The signal of thus-obtained detection value is fed to a detector 12 for amplification and transferred to an arithmetic section 13 to control the operation of said pinch valves 1, 4 and 8.
COPYRIGHT: (C)1980,JPO&Japio
JP7615278A 1978-06-22 1978-06-22 Automatic cod measuring device Pending JPS552959A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7615278A JPS552959A (en) 1978-06-22 1978-06-22 Automatic cod measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7615278A JPS552959A (en) 1978-06-22 1978-06-22 Automatic cod measuring device

Publications (1)

Publication Number Publication Date
JPS552959A true JPS552959A (en) 1980-01-10

Family

ID=13597041

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7615278A Pending JPS552959A (en) 1978-06-22 1978-06-22 Automatic cod measuring device

Country Status (1)

Country Link
JP (1) JPS552959A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5069294A (en) * 1973-10-19 1975-06-10
JPS6156958A (en) * 1984-08-28 1986-03-22 Yokogawa Hokushin Electric Corp Hydrazine concentration measuring apparatus
US5667754A (en) * 1995-09-25 1997-09-16 Hach Company Device for chloride ion removal prior to chemical oxygen demand analysis
US5683914A (en) * 1995-09-25 1997-11-04 Hach Company Method for chloride ion removal prior to chemical oxygen demand analysis
WO2004025672A3 (en) * 2002-09-11 2004-06-24 Korea Biosystems Corp Composite electrode for electrochemical cod measurement
CN103777030A (en) * 2014-01-26 2014-05-07 石家庄德润环保科技有限公司 Automatic laboratory chemical oxygen demand analysis device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5069294A (en) * 1973-10-19 1975-06-10
JPS6156958A (en) * 1984-08-28 1986-03-22 Yokogawa Hokushin Electric Corp Hydrazine concentration measuring apparatus
US5667754A (en) * 1995-09-25 1997-09-16 Hach Company Device for chloride ion removal prior to chemical oxygen demand analysis
US5683914A (en) * 1995-09-25 1997-11-04 Hach Company Method for chloride ion removal prior to chemical oxygen demand analysis
US5932174A (en) * 1995-09-25 1999-08-03 Hach Company Device for chloride ion removal prior to chemical oxygen demand analysis
WO2004025672A3 (en) * 2002-09-11 2004-06-24 Korea Biosystems Corp Composite electrode for electrochemical cod measurement
CN103777030A (en) * 2014-01-26 2014-05-07 石家庄德润环保科技有限公司 Automatic laboratory chemical oxygen demand analysis device

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