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Beijing Zetron Technology Co., LtdFree·1YRS
Online CODcr automatic analysis and detection instrument
NegotiableUpdate on June 09
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Overview
The chemical oxygen demａnd (COD) online analyzer is based on the national standard method-the determination of chemical oxygen demand-a full-automatic COD online analyzer by the dichromate method. Redox reaction occurs inside the mixed solution formed by water samples, potassium dichromate, silver sulfate (as a catalyst to more fully oxidize linear aliphatic compounds) and concentrated sulfuric acid in a high temperature and high pressure environment, during which the Cr( VI) is reduced to Cr(III), so that the colo......
Product Details
Details
Executive standard:
GB11914-1989 "Water Quality Determination of Chemical Oxygen Demand, Potassium Dichromate Method"
HJ/T 377-2007 "Chemical Oxygen Demａnd (CODcr) Water Quality Online Automatic Monitor"
Performance characteristics:
1. Select valve components: select reagent sampling sequence, flexible and diverse channels, changeable functions, easy maintenance, long life and other advantages.
2. With printing function, it can be connected to a printer (optional) to print the measured data in time.
3. It adopts 7-inch touch screen and simple operation interface, which can make it easy for users to learn, operate and maintain.
4. The large data storage capacity realizes the preservation of historical data of no less than 5 years (measurement interval is 1 time/1h), which greatly meets the needs of customers.
5. Automatic leakage alarm function. When reagent leakage occurs, the instrument will automatically alarm to remind the user to perform maintenance.
6. Quantitative use of light signal recognition function to ensure high accuracy of quantification.
7. The maintenance of chemical reagents is simple and convenient. The reagents are replaced once a month, which greatly reduces the user's maintenance workload.
8. It can accurately measure the COD containing 35000mg/L of chloride ion.
9. One-key upgrade of U disk, software update easier.
GB11914-1989 "Water Quality Determination of Chemical Oxygen Demand, Potassium Dichromate Method"
HJ/T 377-2007 "Chemical Oxygen Demａnd (CODcr) Water Quality Online Automatic Monitor"
Performance characteristics:
1. Select valve components: select reagent sampling sequence, flexible and diverse channels, changeable functions, easy maintenance, long life and other advantages.
2. With printing function, it can be connected to a printer (optional) to print the measured data in time.
3. It adopts 7-inch touch screen and simple operation interface, which can make it easy for users to learn, operate and maintain.
4. The large data storage capacity realizes the preservation of historical data of no less than 5 years (measurement interval is 1 time/1h), which greatly meets the needs of customers.
5. Automatic leakage alarm function. When reagent leakage occurs, the instrument will automatically alarm to remind the user to perform maintenance.
6. Quantitative use of light signal recognition function to ensure high accuracy of quantification.
7. The maintenance of chemical reagents is simple and convenient. The reagents are replaced once a month, which greatly reduces the user's maintenance workload.
8. It can accurately measure the COD containing 35000mg/L of chloride ion.
9. One-key upgrade of U disk, software update easier.
Parameter
Method basis: determination of chemical oxygen demand_dichromate method
Measuring range: 10-5000 mg/L COD
Accuracy: when ≥100mg/L, not more than ±10%; when <100mg/L, not more than ±8mg/L
Repeatability: when ≥100mg/L, not more than ±10%; when <100mg/L, not more than ±6mg/L.
Measurement period: The minimum measurement period is 20 minutes. According to the actual water sample, the digestion time can be arbitrarily modified within 5 to 120 minutes
Sampling period: time interval (10～9999min arbitrarily adjustable) and whole point measurement mode
Calibration cycle: adjustable at any interval from 1 to 99 days
Maintenance cycle: generally once a month, about 30 minutes each time
Output: RS-232, 4-20mA (optional)
Environmental requirements: indoor with adjustable temperature, recommended temperature +5～28℃; humidity ≤90% (no condensation)
Power supply: AC220±10% V, 50±10% Hz, 5A
Measuring range: 10-5000 mg/L COD
Accuracy: when ≥100mg/L, not more than ±10%; when <100mg/L, not more than ±8mg/L
Repeatability: when ≥100mg/L, not more than ±10%; when <100mg/L, not more than ±6mg/L.
Measurement period: The minimum measurement period is 20 minutes. According to the actual water sample, the digestion time can be arbitrarily modified within 5 to 120 minutes
Sampling period: time interval (10～9999min arbitrarily adjustable) and whole point measurement mode
Calibration cycle: adjustable at any interval from 1 to 99 days
Maintenance cycle: generally once a month, about 30 minutes each time
Output: RS-232, 4-20mA (optional)
Environmental requirements: indoor with adjustable temperature, recommended temperature +5～28℃; humidity ≤90% (no condensation)
Power supply: AC220±10% V, 50±10% Hz, 5A
Application
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