JKC-6G high chlorine wastewater COD digestion instrument Introduction: The JKC-6G high chlorine wastewater COD digestion instrument is used for sample digestion of chemical oxygen demand in high chlorine water bodies (water and wastewater, with chloride ion concentration greater than 1000mg/L). Applicable standard HJ-T-70-2001- High Chlorine COD Determination - Chlorine Calibration Method. Applicable new local standard DB 37T 3737-2019 Determination of Chemical Oxygen Demand for High Chlorine Water Quality Dichromate Method Technical parameters: 1. Host composition: Heating and digestion intelligent control system, automatic endpoint control system, refrigeration cycle system, nitrogen blowing control system, chlorine gas absorption device 2. Heating and digestion intelligent control system: 2.1 Using ceramic infrared radiators for heating, with good thermal conductivity as the heat source, independent temperature control, and uniform digestion. Single hole heating power ≤ 600W (adjustable), with a microcrystalline panel on the surface of the heating unit, resistant to acid and alkali corrosion. 2.2 Digestion unit: no less than 6 samples, single well single control, digestion temperature, timing time, nitrogen flow rate can be freely set, constant temperature circulation condensation, independent digestion of various samples. 3. Automatic endpoint control system: high-precision nitrogen flow metering module, single hole single control, constant flow blowing, automatically stops heating when the set digestion time is reached, nitrogen flow rate automatically switches to static flow rate, and the state automatically switches flow rate without personnel intervention. 4. Detection range: (1000-50000) mg/L (calculated as chlorine) Anti chlorine interference: [Cl -] ≥ 50000mg/L No effect 5. COD measurement range: Water samples with COD ≤ 700mg/L (undiluted) and above 10mg/L, measured by dilution of the water sample 6. Chlorine gas absorption device: In order to ensure the full reflection of chlorine gas and absorption liquid, a chlorine gas absorption device is required. Chlorine gas is absorbed twice through the absorption device, which is located in front of the machine for easy operation! 7. Refrigeration cycle system: Built in compressor cooling system, internal circulating water cooling, no need for external water source, continuous working water temperature, cooling temperature ≤ 25 ℃, automatic one click water addition, automatic stop when reaching liquid level. 8. Nitrogen blowing control system: adopts imported proportional valve, digital regulation of nitrogen flow rate, and automatic closed-loop control of flow rate according to pressure; 8.1 Nitrogen flow control range: (0-100) ml/min Control accuracy: ± 1.5% F.S Repeatability accuracy: ± 0.2% F.S. 8.2 Nitrogen automatic adjustment function: The nitrogen flow rate can work in different time periods and flow rates, and switch automatically! 8.3 Nitrogen flow rate conversion: Automatic high and low flow rate conversion without personnel intervention. 9. Temperature range: (0-450) ℃ (adjustable) Temperature control accuracy: ± 2 ℃ 10. Time control: 0-999 minutes (adjustable) Heating time: 5-8 minutes 11. Intelligent operating system: Operated by an intelligent microcomputer, using a 7-inch color touch screen. For the convenience of experimental personnel, the display screen needs to be fixed in front of the machine 12. Can independently set the required parameters for the experiment; 13. Power supply: AC 220V, 50Hz Environmental temperature: 10-35 ℃ Environmental humidity:<60%
Introduction: The JKC-6G high chlorine wastewater COD digestion instrument is used for sample digestion of chemical oxygen demand in high chlorine water bodies (water and wastewater, with chloride ion concentration greater than 1000mg/L). Applicable standard HJ-T-70-2001- High Chlorine COD Determination - Chlorine Calibration Method. Applicable new local standard DB 37T 3737-2019 Determination of Chemical Oxygen Demand for High Chlorine Water Quality Dichromate Method
