Lead Pb Online Water Quality Analyzer Spectrophotometric Detection Method
Lead Pb Online Water Quality Analyzer
>>Overview
>>Principle
This product employs the spectrophotometric method for lead detection. After mixing the water sample with a conditioning agent, all forms of lead are converted to lead ions (Pb²⁺). Under alkaline conditions and in the presence of a sensitizer, Pb²⁺ reacts with an indicator to form a colored complex. The analyzer detects this color intensity change, converts it into lead concentration values, and outputs the results. The amount of colored complex generated corresponds to the total lead concentration.
>>Technical Parameter
| Test Method |
Spectrophotometric Detection |
| Measuring Range |
0~10mg/L (segmented measurement, expandable) |
| Detection Limit |
≤0.05mg/L |
| Resolution |
0.001mg/L |
| Accuracy |
±10% or ±0.1 mg/L (whichever is greater) |
| Repeatability |
10% or 0.1 mg/L (whichever is greater) |
|
Drift (24h) |
Zero drift: ±0.05 mg/L Span drift: ±10% |
| Measurement Time |
<20min (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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