Nanjing Microsensoren Technology Co.,Ltd
| Principle: | Potassium dichromate oxidation, spectrophotometric |
| Range: | 10~500/50~2000/100~5000mg/L |
| Detection limit : | 10mg/L |
| Resolution : | 0.01mg/L |
| Permissible error: | >100mg/L, 10%FS; <100mg/L, 5mg/L; |
| Repeatability: | >100mg/L, 10%FS; <100mg/L, 5mg/L; |
Principle:
Heating a mixture of water sample, potassium dichromate digestion solution, silver sulfate solution (silver sulfate as a catalyst can more effectively oxidize linear fatty compounds), and concentrated sulfuric acid to 175 ℃ will cause a color change after the oxidation of organic matter in the solution by dichromate ions. The analyzer detects this color change and converts it into COD value output. The amount of dichromate ions consumed is equivalent to the amount of oxidizable organic matter.
Features:
touch panel
Multi range, automatic switching
Level 3 operation permissions
State self diagnosis function
Abnormal or power outage data protection
Built in multiple communication protocols
Scheduled testing and automatic verification
Power off and restart, automatic emptying, cleaning, and reset
Running log records, process and operation records can be checked
remote monitoring, remote operation instructions
Timed testing, automatic verification
Parameters:
Measure factor | CODcr |
Principle | Potassium dichromate oxidation, spectrophotometric |
Range | 10~5000mg/L; Grades: 10~500/50~2000/100~5000mg/L (switchable and expandable) |
Detection limit | 10mg/L |
Resolution | 0.01mg/L |
Permissible error | >100mg/L, 10%FS; <100mg/L, 5mg/L; |
Repeatability | >100mg/L, 10%FS; <100mg/L, 5mg/L; |
Zero drift | 5mg/L |
Range drift | 10% |
Measuring cycle | Min. 20 minutes; Digestion time: 5~60 minutes (adjustable) |
Sampling period | Timing analysis, interval analysis, remote control |
Calibration cycle | Automatic calibration/manual calibration |
Maintenance cycle | 1 month (about 1 hour each time) |
Reagent consumption | About RMB 0.5 per sample |
Data storage | More than 1 year of data storage |
Input | Switch |
Output | 1 RS232, 1 RS485, 2 4-20mA |
Power supply | AC(220~240) |
Working current | 5A |
Size | LWD: 1500*500*450mm |
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.
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