4 methods of ozone aging test equipment concentration test

Ozone aging test machine, also known as "ozone aging test chamber", can be used for rubber products such as vulcanized rubber, thermoplastic rubber, cable insulation sheath and other products.

What are the methods of ozone aging test equipment concentration test?

1, electrochemical method: the use of ozone in water in the electro-activated surface of the point of chemical reduction, point of the current change curve in the circuit is proportional to the concentration of ozone in solution, this instrument has a data output function, can be measured online and can achieve closed-loop feedback control of the ozone generator, currently used in large-scale water treatment projects.

2, iodine measurement method: the classic measurement method in the past, the ozone concentration is calculated by the number of sodium thiosulfate consumed by using the ozonation gas to make the iodine oil in the potassium iodide solution out of the color, and then titrating the reduction to colorless with sodium thiosulfate. This method of color development intuitive, cheap equipment, but to use a variety of drugs, wash bottles, measuring cylinders, scales, burettes and other chemical test equipment, the use of inconvenient, and vulnerable to other oxidants (such as NO / CL, etc.) interference, this method is still the scale of China's measurement method.

3, colorimetric method: the same chemical method as the iodine method, is the use of ozone on the reaction of chemical reagents to determine the ozone concentration of color or decolorization phenomenon, it can be used potassium iodide, o-toluidine or indigo dye and other chemicals, can be directly observed with the naked eye and standard color tube or colorimetric disc comparison, but also available spectrophotometer detection, but the test drugs are disposable consumables.

4, UV absorption method: the use of ozone on the wavelength = 254nm UV absorption value of the amount of large, so that UV light in the ozone atmosphere attenuation, and then by photoelectric components, electronic circuit (comparison circuit, data processing, digital-to-analog conversion) to get the data output, this method is accurate, continuous online measurement, but the instrument is more expensive, generally used as a testing unit and production, scientific research units.

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2022-11-25 11:45