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PCM200-CODcr
PROBEST
PCM200-CODcr Chrome COD Online Analyzer
Principle of Measurement
The dichromate process. Under certain conditions, the mixed solution of potassium dichromate and sulfuric acid is added to the water sample, and the reaction is carried out in the digestion tank, so that the organic reducing matter in the water sample is oxidized. In the reaction, Cr6+ is reduced to Cr3+, which causes the color change of the mixed solution. The color change of the mixed sample is detected by photoelectric colorimeter, and finally converted into the content of oxygen required by the redox reaction, which is the chemical oxygen demand of the water sample under test.
Main Features
l Use sapphire valve core of 10 valve, wear-resisting coefficient tall, resistant to strong acid, alkali, organic solvent resistance, strong service life, high stability;
l Use of special design way of reference, digestion pool mild displacement and digestion pool light pollution does not affect measurements;
l With waste liquid separation function, realizing high concentration waste liquid reaction from low concentration cleaning liquid waste emissions;
l Have dynamic dilution function, can be adjusted automatically according to the range of the scene set diluted multiples;
l With built-in standard addition recovery, blank test verification, the prototype verification, zero check, span, parallel sample testing and other quality control function;
l Can realize automatic, manual, remote start quality control functions;
l Has an automatic fault diagnosis and information uploading, logging, such as component fault, outrange alarm, alarm information such as the excessive alarm, lack of reagent;
l With overheating protection: heating temperature is exorbitant, heater automatically power;
l Abnormal reset and power later, electricity, instrument automatic discharge instrument in residue of reactants, automatically restore to the original working condition;
l With power-on alarm function, the instrument will generate alarm information when power is switched on again;
l With log analysis instrument process and measurement data record and alarm information storage capabilities, to record every hour data calculation, and can store more than 3 years;
l Can U disk rapid export data;
l With three-level management authority.
Typical Application
l On-line monitoring of municipal sewage outfalls, pollution source outlet.
l On-line monitoring of industrial wastewater outlet.
Specification
Range | 0-50000mg/L (Customizable) |
Indication deviation | Range 0-200mg/L，20%* ≤±10%；50%* ≤±8%；80%* ≤±5%；Range＞200mg/L，≤±3% |
Repeatability | ≤ 2% |
Resolution | 0.1mg/L |
Display | 7 inch display |
Measurement mode | Continuous mode, periodic mode (adjustable from 1 hour to 30 days), fixed point mode, controlled mode, and manual mode are optional |
Calibration mode | Manual calibration or automatic calibration |
Maintenance cycle | General once a month |
Power supply | 220VAC±10%，50HZ±10% |
Output | 4~20mA output |
Communication method | MODBUS RS-232、 RS-485 |
Environmental conditions | Temperature adjustable room, recommended temperature +5～40℃ Humidity ≤85% (no condensation) |
Size | 302*271*462mm |
PCM200-CODcr Chrome COD Online Analyzer
Principle of Measurement
The dichromate process. Under certain conditions, the mixed solution of potassium dichromate and sulfuric acid is added to the water sample, and the reaction is carried out in the digestion tank, so that the organic reducing matter in the water sample is oxidized. In the reaction, Cr6+ is reduced to Cr3+, which causes the color change of the mixed solution. The color change of the mixed sample is detected by photoelectric colorimeter, and finally converted into the content of oxygen required by the redox reaction, which is the chemical oxygen demand of the water sample under test.
Main Features
l Use sapphire valve core of 10 valve, wear-resisting coefficient tall, resistant to strong acid, alkali, organic solvent resistance, strong service life, high stability;
l Use of special design way of reference, digestion pool mild displacement and digestion pool light pollution does not affect measurements;
l With waste liquid separation function, realizing high concentration waste liquid reaction from low concentration cleaning liquid waste emissions;
l Have dynamic dilution function, can be adjusted automatically according to the range of the scene set diluted multiples;
l With built-in standard addition recovery, blank test verification, the prototype verification, zero check, span, parallel sample testing and other quality control function;
l Can realize automatic, manual, remote start quality control functions;
l Has an automatic fault diagnosis and information uploading, logging, such as component fault, outrange alarm, alarm information such as the excessive alarm, lack of reagent;
l With overheating protection: heating temperature is exorbitant, heater automatically power;
l Abnormal reset and power later, electricity, instrument automatic discharge instrument in residue of reactants, automatically restore to the original working condition;
l With power-on alarm function, the instrument will generate alarm information when power is switched on again;
l With log analysis instrument process and measurement data record and alarm information storage capabilities, to record every hour data calculation, and can store more than 3 years;
l Can U disk rapid export data;
l With three-level management authority.
Typical Application
l On-line monitoring of municipal sewage outfalls, pollution source outlet.
l On-line monitoring of industrial wastewater outlet.
Specification
Range | 0-50000mg/L (Customizable) |
Indication deviation | Range 0-200mg/L，20%* ≤±10%；50%* ≤±8%；80%* ≤±5%；Range＞200mg/L，≤±3% |
Repeatability | ≤ 2% |
Resolution | 0.1mg/L |
Display | 7 inch display |
Measurement mode | Continuous mode, periodic mode (adjustable from 1 hour to 30 days), fixed point mode, controlled mode, and manual mode are optional |
Calibration mode | Manual calibration or automatic calibration |
Maintenance cycle | General once a month |
Power supply | 220VAC±10%，50HZ±10% |
Output | 4~20mA output |
Communication method | MODBUS RS-232、 RS-485 |
Environmental conditions | Temperature adjustable room, recommended temperature +5～40℃ Humidity ≤85% (no condensation) |
Size | 302*271*462mm |
