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This method belongs to the chemical oxygen consumption in the 30 ~ 1000mg / L range, and the chloride concentration of less than 3.5g / L Cl- waste water, according to the actual requirements, can be applied to a chloride concentration of less than 10g / L Cl- wastewater .
Technical parameters:
2.1 Methods based on: the national standard GB11914-89 "Water quality - Determination of chemical oxygen demand - potassium."
2.2 Measuring range: 30-1000 mg / L COD.
2.3 Accuracy: ≥100mg / L at no more than ± 10%; <100mg / L when not exceed ± 8mg / L.
2.4 Repeatability: ≥100mg / L at no more than ± 10%; <100mg / L when not exceed ± 6mg / L.
2.5 Measuring cycle: The minimum measurement period of 20 minutes, according to the actual water samples, in 5 ~ 120min any modification digestion time.
2.6 Sampling period: time interval (20 ~ 9999min adjustable) and the whole point of measurement mode.
2.7 Calibration cycle: 1 to 99 days at any arbitrary time interval is adjustable.
2.8 Maintenance intervals: Usually once a month, each about 30 min.
Output 2.9: GPRS signal.
2.10 Environmental requirements: temperature adjustable interior, recommended temperature + 5 ~ 28 ℃; humidity ≤90% (non-condensing).
2.11 Power: AC220 ± 10% V, 50 ± 10% Hz, 5A.
2.12 Dimensions: length 550 × width 440 × height 1450mm
2.13 Other: abnormal alarm and power without losing data;
Touch screen display and command input;
Error reset and power off the call, the instrument automatically discharge the residual reactants instrument automatically return to work status.
 

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1 - Select the valve assembly: the reagents sampling timing;
2- metering components: photovoltaic systems through visualization reagent metering precision to overcome the peristaltic pump tubing quantitative errors caused due to wear; while enabling accurate quantification of trace agent, only 1.5 ml per dose, greatly reducing the amount of reagent .
3- Injection components: vacuum suction peristaltic pump, tubing between the reagent and there is always an air buffer, to avoid the corrosion of the tubing;
4- sealed digestion components: high temperature and pressure digestion system, speed up the progress of the reaction, the system overcomes the corrosive gas exposure to volatile corrosion of equipment;
5- reagent tubes: The import of modified PTFE transparent hose, diameter greater than 1.5mm, reducing the chances of blockage of water-like particles.