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Online COD analyzer
Technical data:
◆   Measuring method: Potassium dichromate high-temperature digestion –colorimetric determination method (improved based on the method described in GB11914-89);
◆   Measuring range: (0-500) mg/l, (0-2000) mg/l &(0-5000) mg/l; these three ranges are available;
◆   Max measuring range: 0-40000 mg/l (after automatic dilution);
◆   Chloride ions interference resistance: Max. 40000mg/l (after automatic dilution);
◆   检测下线：8mg/l；
◆   Lower limit of detection: 8 mg/l;
◆   Resolution: <1 mg/l;
◆   Accuracy: <10% for standard solutions; 15% for water samples;
◆   Reproducibility: <5%;
◆   Digestion temperature: 165 °C; adjustable;
◆   Digestion time: 15 min; adjustable;
◆   Trouble-free operation hours: ≧720 h;
◆   Span drift: ±5% F.S.;
◆   HMI: 7’’ 70000-color TFT true-color touch screen; resolution: 800*480;
◆   Print: Reserved printer interface to connect an external industrial micro-printer (optional);
◆   Storage: 20000 data; no loss of data in the case of power failure; automatic coverage of earliest data when the memory is full; (the memory with a capacity of 40000 data may be added;)
◆   Communication interface: One-channel RS232 digital interface or RS485; support the MODBUS communication protocol or self-defined protocol; 1-channel analog signal: 4-20 ma (with the range corresponding to 20 ma adjustable);
◆   Pretreatment system: Auto cleaning, back flushing and precision filtration; ensure good representativeness of samples and avoid pipe blockage by large suspended particles, thereby ensuring data continuity (optional);
◆   Overall dimensions: 900*600*450 (mm);
◆   Weight: 50 kg;
◆   Power supply: AC220 V±20%, 50 HZ±1%;
◆   Power: 300 W;
◆   Ambient temperature: 5-40 °C;
◆   Ambient humidity: ≦85%;
◆   Measuring method: Nessler reagent (high-temperature distillation) colorimetric determination method.