2020 permanganate index water quality online analyzer-j9九游会官方

application areas

the 2020 permanganate index water quality online analyzer is designed for online monitoring of permanganate index in various water sources, including surface water, groundwater, water supply sources, and municipal water supply.

detection principles

potassium permanganate digestion - redox potential titration method:

in this method, sulfuric acid and excess potassium permanganate solution are added to the sample. after a designated period of digestion at a set temperature, organic pollutants and reducible inorganic substances in the sample are oxidized by potassium permanganate. subsequently, excess sodium oxalate solution is added to react with the remaining potassium permanganate. the excess sodium oxalate solution is then titrated back with potassium permanganate. the change in redox potential during the titration process is used to calculate the volume of titrant at the endpoint. the permanganate index value is then calculated based on the volume, and the result is expressed in milligrams of oxygen consumed per liter of sample.

potassium permanganate digestion - spectrophotometry:

in this approach, sulfuric acid and excess potassium permanganate solution are added to the sample, and after digestion at a specified temperature, organic pollutants and reducible inorganic substances are oxidized by potassium permanganate. excess sodium oxalate solution is introduced to react with the remaining potassium permanganate. a known amount of potassium permanganate solution is then added again, reacting with the remaining sodium oxalate. finally, the absorbance is measured, and the permanganate index is calculated based on this value.

features

equipped with power-off protection and automatic recovery functions.

flexible editing of analysis, calibration, quality control, and other processes.

multi-channel valve sampling with low reagent consumption, avoiding contamination.

ultra-high precision syringe pump to ensure accurate quantification of samples and reagents.

automatic and remote quality control functions, including standard solution verification and spike recovery test.

modular design, allowing for the combination of multiple factors in a single cabinet according to requirements.

technical specifications

detection principle: optional potassium permanganate digestion - redox potential titration method, or potassium permanganate digestion - spectrophotometry.

detection range: 0~20 mg/l, with additional selectable ranges.

measurement modes: periodic mode, controlled mode, hourly mode, continuous mode, manual mode.

verification modes: remote verification, manual verification, automatic verification (triggered periodically or by exceeding limits).

signal output: 4~20 ma, rs232 / rs485.

environmental requirements: 5~40 ℃, rh≤95%.

power requirements: 220±22 vac, 50±0.5 hz.

module dimensions: approximately 490 mm (w) × 400 mm (d) × 210 mm (h).

cabinet dimensions: approximately 600 mm (w) × 550 mm (d) × 1 750 mm (h).