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Online COD analyzer, chemical oxygen demand CODcr, water quality online automatic monitoring
Online COD analyzer, chemical oxygen demand CODcr, water quality online automatic monitoring
Product details
1、 Measurement principle of online CODcr analyzer:
The water sample, potassium dichromate digestion solution, mercuric sulfate (mercuric sulfate can eliminate the interference of chloride ions in water samples, as chloride ions can form very stable mercuric chloride with mercury ions), and silver sulfate solution (silver sulfate can be added as a catalyst to more effectively oxidize linear fatty compounds) mixed solution are heated to 165 ℃. After the oxidation of organic matter in the solution by dichromate ions, the color will change. The analyzer detects this color change and converts it into COD value output. The amount of potassium dichromate ions consumed is equivalent to the amount of oxidizable organic matter.
IIOnline CODcr analyzerMain features:
Touch screen display and command input, multiple sampling and measurement modes, unique design, lower failure rate, lower maintenance, lower reagent consumption, and higher cost-effectiveness.
IIIOnline CODcr analyzerTechnical indicators:
Method basis: National standard GB11914-89 "Water Quality - Determination of Chemical Oxygen Demand - Potassium Dichromate".
Measurement range: 10 mg/L-5000 mg/L.
Accuracy: not exceeding ± 10%.
4 Repeatability: not exceeding ± 5%.
5 measurement cycles: The minimum measurement cycle is 35 minutes.
6 sampling periods: time interval (adjustable from 10 minutes to 9999 minutes) and whole point measurement mode.
Calibration cycle: (1-99) days, adjustable at any interval and any time.
8 Maintenance cycle: Generally once a month, about 30 minutes each time.
9. Reagent consumption: less than 0.35 yuan/sample.
10 outputs: 1 RS-232, 1 RS485, 2 4mA to 20mA.
11 Environmental requirements: For indoor environments with adjustable temperature, it is recommended to have a temperature range of+5 ℃ to 28 ℃; Humidity ≤ 90% RH (non condensing).
12 Power supply: AC220 ± 10% V, 50 ± 10% Hz, 5 A.
Size 13: Height 1500 mm x Width 500 mm x Depth 450 mm.
14 Other: Abnormal alarms and power outages will not result in data loss;
Touch screen display and command input;
After abnormal reset and power failure, the instrument will automatically discharge residual reactants and restore working status.
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