BH9004 Permanganate (CODmn) water quality Automatic on-line monitor
Product Overview
CODmn refers to the mass concentration of oxygen corresponding to the oxidant consumed when oxidizing organic and inorganic reducing substances in water samples with strong oxidant under certain conditions. CODmn is also an important indicator reflecting the degree of pollution of water body by organic and inorganic reducing substances.
The analyzer can work automatically and continuously for a long time without attendance according to the site settings. It is widely used in industrial pollution source discharge wastewater, municipal sewage treatment plant wastewater, environmental quality surface water and other occasions. According to the complexity of site test conditions, the corresponding pretreatment system can be selected to ensure the test process is reliable,test results are accurate, and fully meet the needs of different occasions.
Product Principle
Manganese COD use permanganate as oxidant and heats it in water bath for 20 minutes.
Technical Parameters
| No. | Name | Technical Parameters |
| 1 | Range | This product is suitable for the chemical oxygen demand in 0~200mg/L range of wastewater. |
| 2 | Test Methods | Acid potassium permanganate REDOX titration |
| 3 | Measuring range | 0~10~20mg/L,adjustable |
| 4 | Detection Lower limit | 0.05 |
| 5 | Resolution | 0.01 |
| 6 | Accuracy | ±5% or 0.2mg/L ,which ever is greater for each range |
| 7 | Repeatability | 5% |
| 8 | Zero Drift | ±0.05mg/L |
| 9 | Span Drift | ±2% |
| 10 | Measurement cycle | The minimum test cycle is 20min. According to the actual water sample, the digestion time can be set from 5 to 120min |
| 11 | Sampling period | Time interval (adjustable), integral hour or trigger measurement mode can be set. |
| 12 | Calibration cycle | Automatic calibration (1-99 days adjustable), according to actual water samples, manual calibration can be set. |
| 13 | Maintenance cycle | Maintenance interval is more than one month, about 30 minutes each time. |
| 14 | Human-machine operation | Touch screen display and instruction input. |
| 15 | Self checking protection |
Working status is self-diagnostic, abnormal or power failure will not lose data. Automatically eliminates residual reactants and resumes work after abnormal reset or power failure. |
| 16 | Data storage | No less than half a year data storage |
| 17 | Input interface | Switch quantity |
| 18 | Output interface | Two RS232 digital output, One 4-20mA analog output |
| 19 | Working Conditions | Working indoors; temperature 5-28ºC; relative humidity≤90% (no condensation,no dew) |
| 20 | Power Supply and Consumption | AC230±10%V, 50~60Hz, 5A |
| 21 | Dimensions | Height1500×Width 550×Depth 450(mm) |