COD meter
COD Meter: The Ultimate Solution for Water Quality Analysis
A COD meter (Chemical Oxygen Demand meter) is an essential tool for monitoring water quality in industrial, environmental, and laboratory settings. It measures the amount of oxygen required to chemically oxidize organic compounds in water, providing critical data for pollution control and treatment processes.
Key Features of Our COD Meter
- Advanced photometric technology for precise measurements
- Wide measurement range: 0-15000 mg/L
- High-resolution color touchscreen display
- Built-in thermal printer for immediate results
- 500-test memory capacity with data export
- IP67 waterproof rating for harsh environments
- Automatic temperature compensation
Technical Specifications
| Parameter | Specification |
|---|---|
| Measurement Range | 0-15000 mg/L (COD) |
| Accuracy | ±5% of reading or ±10 mg/L (whichever is greater) |
| Resolution | 1 mg/L (0-999 mg/L), 10 mg/L (1000-15000 mg/L) |
| Wavelength | 420 nm, 610 nm (dual wavelength system) |
| Response Time | 15 minutes for standard test |
| Power Supply | AC 100-240V, 50/60Hz or rechargeable battery (8 hours operation) |
| Dimensions | 320 × 265 × 145 mm (L × W × H) |
| Weight | 3.2 kg |
COD Meter Applications
The COD meter is widely used in various industries for environmental monitoring and process control:
- Wastewater treatment plants
- Environmental monitoring agencies
- Food and beverage production
- Chemical and pharmaceutical manufacturing
- Research laboratories
- Municipal water systems
FAQ About COD Meter
How often should I calibrate my COD meter?
For optimal performance, we recommend calibrating your COD meter every 30 days or after every 100 tests, whichever comes first. More frequent calibration may be necessary if you're working with extreme sample concentrations or require higher accuracy. The meter includes an auto-calibration function that simplifies this process using standard solutions.
What maintenance does a COD meter require?
Regular maintenance of your COD meter includes cleaning the sample chamber after each use, replacing the digestion tubes when showing signs of wear, and periodically checking the light source intensity. The instrument has self-diagnostic functions that alert users when maintenance is required. Proper maintenance ensures consistent accuracy and extends the lifespan of your COD meter.
Can the COD meter measure other water quality parameters?
Our advanced COD meter model can measure additional parameters including BOD (Biochemical Oxygen Demand), TOC (Total Organic Carbon), and nitrate levels when equipped with optional sensor modules. These multi-parameter capabilities make it a versatile tool for comprehensive water quality analysis while maintaining the precision of COD measurements as its primary function.
Why Choose Our COD Meter?
Our COD meter stands out in the market due to its:
- Industry-leading accuracy and repeatability
- Robust construction for field and lab use
- Intuitive software with multiple language options
- Comprehensive technical support
- Global certification including CE, RoHS, and ISO 9001
For professionals who demand reliable water quality data, our COD meter provides the perfect combination of precision, durability, and user-friendly operation. Whether you're monitoring industrial effluent or conducting environmental research, this instrument delivers consistent, trustworthy results that meet international standards.
COD Meter Operation Principles
The COD meter operates on the principle of dichromate oxidation. The sample is digested with potassium dichromate in strong sulfuric acid at high temperature (150°C). Organic compounds are oxidized, reducing the dichromate ion (Cr6+ to Cr3+). The color change is measured photometrically and correlated to COD concentration through pre-programmed calibration curves.
With its advanced optical system, our COD meter achieves superior accuracy even with challenging samples containing suspended solids or colored compounds. The instrument automatically compensates for these interferences, eliminating the need for manual corrections and reducing operator errors.