BH9008 BOD Water Quality On-line Automatic Monitor
Product Principle:
Water sample, potassium dichromate digestion solution, silver sulfate solution (silver sulfate as a catalyst to join can more effectively straight-chain fatty compound oxide) and sulfuric acid mixture is heated to 175 ºC, dichromate ion oxide solution of organic matter after color change, analyzer to detect the changes in color, and the change of conversion into BOD value output and consumption of dichromate ion content of oxidizable organic matter quantity.
Technical Parameters:
| No. | Name | Technical Parameters |
| 1 | Application Range | This product is suitable for wastewater with chemical oxygen demand in the range of 10~2000mg/L and chloride concentration lower than 2.5g/L Cl-. It can be extended to wastewater with chloride concentration lower than 20g/L Cl- according to customers' actual demand. |
| 2 | Test Methods | Potassium dichromate was digested at high temperature and colorimetric determination. |
| 3 | Measuring range | 10~2000mg/L |
| 4 | Lower limit of Detection | 3 |
| 5 | Resolution | 0.1 |
| 6 | Accuracy | ±10% or ±8mg/L(Take the bigger value) |
| 7 | Repeatability | 10% or 6mg/L(Take the bigger value) |
| 8 | Zero Drift | ±5mg/L |
| 9 | Span Drift | 10% |
| 10 | Measurement cycle | Minimum 20 minutes. Depending on 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) |
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