The chemical oxygen demand online analyzer enables long-term unattended automatic monitoring. It adopts the potassium dichromate digestion-spectro photometric method and complies with HJ 828-2017 Water Quality-Determination of COD-Dichromate Method and HJ/T377-2019"Technical Requirements and Testing Methods for COD Online Analyzers.
· Easy maintenance: simple structure, low reagent consumption, minimal maintenance.
· User-friendly: color touchscreen, intuitive interface, customizable reagent volume.
· Accurate and reliable: complies with national standards, ensuring precise and comparable results.
· Digitalized: supports data storage, analysis, and transmission.
· Remote access: wireless data transmission, accessible via pc and mobile devices.
· Long storage: stores over 3 years of data, expandable as needed.
· Wide compatibility: anti-interference design ensures accuracy regardless of turbidity, suitable forvarious water quality monitoring needs.
· Low reagent use: <4ml per test, waste <5ml.
Parameters | Specification |
Range | 0‑200 mg/L，200‑2000 mg/L (Expandable) |
Repeatability | ≤ 5.0 % |
Zero Drift | ±5 mg/L |
Range Drift | ≤ 5.0 % ≤ 3.0 % (For Expanded Range) |
Indication Error | 20 %: ±10.0 % 50 %: ±8.0 % 80 %: ±5.0 % ±3.0 % (For Expanded Range) |
Memory Effect | 80 % → 20 %: ±5.0 mg/L 20 % → 80 %: ±5.0 mg/L |
Voltage Effect | ±5.0 % |
Chloride Ion Effect | ±10 % |
Actual Sample Comparison | CODcr ＜ 50 mg/L : Error ≤ 5 mg/L CODcr ≥ 50 mg/L : Error ≤ 10 % |
Minimal Maintenance Cycle | ≥ 168 h |
Power Supply | AC 220±22 V , 50±0.5 Hz |
Dimensions | L × W × H 428 × 331 × 575 mm |
Weight | ＜ 20 kg |
Widely applicable for monitoring surface water, effluent from pollution sources, industrial wastewater, wastewater from sewage treatment plants, and municipal sewage outlets.
Surface Water |
Effluent From Pollution Sources |
Industrial Wastewater |
Wastewater From Sewage Treatment Plants |
Municipal Sewage Outlets |
Tel: +86 400-800-2810
Email: overseasmarketing@ldchina.cn
Address: No.599 Tianshi Road, Shushan District, Hefei City, Anhui Province, China
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