Cadmium Online Water Quality Analyzer
Cadmium Online Water Quality Analyzer
>>Overview
>>Principle
The product utilizes the dithizone spectrophotometric method for cadmium determination. After mixing the water sample with conditioning agents, cadmium reacts with the indicator in an acidic environment to form a colored complex. The analyzer detects the color intensity change, converts it into cadmium concentration values, and outputs the results. The amount of colored complex generated is proportional to the cadmium concentration.
>>Technical Parameter
| Test Method |
Dithizone Spectrophotometric Method |
| Measuring Range |
0~2mg/L (segmented measurement, expandable) |
| Detection Limit |
≤0.02mg/L |
| Resolution |
0.001mg/L |
| Accuracy |
±5% |
| Repeatability |
≤±5% |
|
Drift (24h) |
Zero drift: ±5% Span drift: ±10% |
| Measurement Time |
<50min (digestion time adjustable) |
| Measurement Modes |
Adjustable time interval, fixed time point, or triggered measurement |
|
Calibration Modes |
Automatic calibration (1~99 days adjustable) Manual calibration based on actual water samples |
|
Maintenance Cycle |
|
| Human-Machine Interface |
Touchscreen display and command input |
|
Self-Diagnosis & Protection |
Self-diagnoses operational status; retains data during anomalies/power outages Automatically clears residual reactants and resumes operation after reset/power recovery |
| Data Storage |
5-year data capacity |
| Input Interface |
Digital input |
|
Output Interfaces |
1× RS232, 1× RS485 2× 4~20mA analog outputs |
|
Operating Environment |
Indoor use; recommended temperature: 5~28℃, humidity ≤90% (non-condensing) |
|
Power Supply |
Voltage: AC 220±10% V Frequency: 50±0.5 Hz Power: ≤150W (excluding sampling pump) |
|
Dimensions |
520H × 370W × 265D (mm) |
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