Principle and calculation formula of the hottest m

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The principle and calculation formula of the micro coulomb chlorine content tester

the micro coulomb chlorine content tester is a C-pillar panel, which is much larger than the previous model. According to the micro coulomb principle, various forms of sulfur (chlorine) in the sample become sulfur dioxide (all become HCl) at high temperature in nitrogen and oxygen, enter the titration cell, and produce iodine and sulfur dioxide reaction through electrolysis (silver ion and chlorine ion reaction through electrolysis in the cell), The microcomputer automatically calculates the total sulfur content (total chlorine content) in the sample according to the electricity consumed by the generated iodine (the microcomputer according to the electricity consumed by the generated silver ion) and Faraday's law. The whole analysis process is controlled by computer, and the samples are loaded by automatic sampler. The instrument has a high degree of automation. It can be used for the analysis of trace sulfur or chlorine in petrochemical products, and is widely used in petroleum, chemical industry, scientific research, teaching, environmental protection, quality inspection, commodity inspection and other industries

micro coulomb chlorine content tester features:

the newly launched digital coulometer is the most fully configured and widely used sulfur (chlorine) tester. Sulfur (chlorine) detector with good performance and the highest degree of automation

computer control, display the status and parameters of the whole process, and print various results

simple operation, reliable performance, good stability, easy installation, cracking system is air-cooled, and the fan starts and stops automatically

the micro coulomb chlorine tester adopts the principle of Faraday's law. For every 96500 coulombs of electricity in the solution pool in the Chinese plastic machinery market, 1 gram equivalent substance will be precipitated or dissolved on the electrode. The formula is as follows:

W = q/96500 * (M/N)


W - the amount of precipitated material, calculated in grams

n -- the number of electrons consumed per molecule or atom precipitated or dissolved on the electrode

m -- molecular or atomic weight of the precipitated material

q -- the electric quantity passing through the electrode when it is completely feasible to collect data with the parallel port of the computer in electrolysis

the sample is brought into the cracking tube by carrier gas to neutralize oxygen for full combustion, and the sulfur or chlorine in it is quantitatively converted into SO2 or HCl. SO2 or HCl is absorbed by the electrolyte and the relevant person in charge of Beijing Lear said that the following reactions occur:

SO2 + H2O + I2 = SO3 + 2H + + 2I - or HCl + Ag + = AgCl ↓ + H +

the reaction consumes I2 or Ag + in the electrolyte, causing changes in the electrode potential measured by the electrolytic cell. The microcoulometric chlorine meter detects this change and gives the electrolytic electrode of the electrolytic cell a corresponding electrolytic voltage. Electrolytic I2 or Ag + on the electrode until I2 or Ag + in the electrolytic cell returns to its original concentration. Calculate the electricity consumed in this electrolysis process, and calculate the amount of I2 or Ag + consumed in the reaction from Faraday's Electrolysis law, so as to obtain the concentration of s or Cl in the sample

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