1.High-temperature and high-pressure digestion for high digestion efficiency and short digestion time
2.Dual-beam measurement to eliminate electromagnetic interference on measurement results
3.Automatic turbidity and color compensation function, suitable for high-turbidity water bodies
4.Capacitive metering method for high precision and good repeatability of samples/reagents
5. Chloride ion interference ≤75000mg/L, adaptable to high-salinity wastewater
6.Low detection limit for measuring water samples under complex conditions
The HQ-3300 is an online automatic monitoring instrument for COD measurement based on the national standard analytical method using the dichromate method. It is suitable for measuring COD in various complex water bodies. The built-in quality control function facilitates remote analysis of instrument status. With its simple structure and easy operation and maintenance, it is ideal for long-term unattended automatic monitoring.
Product Features:
1. High-temperature and high-pressure digestion for high digestion efficiency and short digestion time
2. Dual-beam measurement to eliminate electromagnetic interference on measurement results
3. Automatic turbidity and color compensation function, suitable for high-turbidity water bodies
4. Capacitive metering method for high precision and good repeatability of samples/reagents
5. Chloride ion interference ≤75000mg/L, adaptable to high-salinity wastewater
6. Low detection limit for measuring water samples under complex conditions
Technical Parameters:
Measurement Parameter | CODCr |
Measurement Principle | Potassium dichromate digestion spectrophotometry |
Range | (15-500) mg/L, with a maximum extended range of 25000 mg/L (adjustable range based on customer requirements) |
Repeatability | ≤5 % |
Zero Drift | ±5 % |
Range Drift | ±5 % |
Accuracy | ±10 % |
Measurement Time | 40 min |
Maximum Power | 100W, Average Power: 25W |
Power Supply | (85-264)V AC / (47-63)Hz, expandable to DC 24V power supply |
Dimensions | Approximately (W) 400 × (D) 300 × (H) 640 mm (excluding protrusions) |
Communication Port | RS485 MODBUS |
Analog Output | （4-20）mA |
Environmental Temperature | （5-40）℃ |
Environmental Humidity | ≤85%RH (non-condensing) |