Fluoride Online Water Quality Analyzer
>>Overview
The fluoride online analyzer employs the national standard method for water quality fluoride determination —
fluorine reagent spectrophotometric method. This instrument is primarily used for monitoring surface water,
groundwater, industrial wastewater, and is particularly critical in
regions with high incidences of dental caries and skeletal fluorosis for monitoring drinking, surface, and groundwater sources.
The analyzer operates autonomously under long-term unattended and continuous operation based on field configurations. It is widely applicable to
industrial wastewater discharge, industrial process wastewater, and
similar scenarios. Depending on on-site complexity, optional
preprocessing systems can be integrated to ensure reliable testing processes, accurate results, and compliance with diverse operational demands.
>>Principle
In an acetate buffer medium at pH 4.1, fluoride ions react with the
fluorine reagent and lanthanum nitrate to form a blue ternary
complex. The color intensity is proportional to the fluoride ion
concentration. The analyzer quantifies fluoride (F⁻) by measuring
absorbance at 620nm wavelength.
>>Technical Parameter
| Test Method | Fluorine reagent spectrophotometric method |
| Measuring Range | 0~50mg/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 | <40min (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 | 1 month per session; ~30min per maintenance
|
| 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) |
