The test method of carbon and sulfur analyzer, and the comparison of carbon content of carbon and su

1. Infrared absorption method (infrared carbon and sulfur analyzer): the carbon and sulfur in the sample are heated at high temperature under oxygen-rich conditions and oxidized into carbon dioxide and sulfur dioxide gas. After treatment, the gas enters the corresponding absorption cell, absorbs the corresponding infrared radiation, and the detector ** is the signal, and the output result is processed by the computer.

This method has the characteristics of accuracy, rapidity and high sensitivity, and the high low-carbon sulfur content is used, and the infrared carbon and sulfur analyzer using this method has a high degree of automation and is also relatively high, and is suitable for occasions with high analytical accuracy requirements.

2. Conductivity method (conductivity carbon and sulfur meter): This is a method to measure and analyze the carbon and sulfur content according to the change of conductivity, the mixed gas produced by the measured sample after high temperature combustion, after the absorption of the conductivity cell, the resistivity (the reciprocal of conductivity) changes, so as to determine the content of carbon and sulfur, which is characterized by accuracy, fast and sensitive. It is mostly used for the determination of low carbon and low sulfur.

3. Gravimetric method (carbon and sulfur combined tester): alkali asbestos is commonly used to absorb carbon dioxide, and the carbon content is calculated from the "increment". The determination of sulfur is commonly used by wet method, the sample is decomposed and oxidized with acid to convert into sulfate, and then barium chloride is added to the hydrochloric acid medium to generate barium sulfate, which is precipitated, filtered, washed, burned, weighed and finally calculated to obtain the sulfur content.

The disadvantage of the gravimetric method is that the analysis speed is slow, so it cannot be used for on-site carbon and sulfur analysis in enterprises, and the advantage is that it has high accuracy, and it is still recommended as a standard method at home and abroad, and is suitable for standard laboratories and research institutions.

4. Titration method (titrator): The non-aqueous titrator is used to determine the carbon and sulfur elements of iron and steel by acid-base titration. Matched with arc combustion furnace, suitable for general laboratory, furnace testing, etc.

5. Volumetric method (gas volume carbon and sulfur meter): the commonly used carbon measurement is the gas capacity method, and the sulfur measurement is the iodine measurement method and the acid-base titration method. In particular, the gas volume method for measuring carbon and iodine sulfur is fast and accurate, and is the most commonly used method for the combined determination of carbon and sulfur in China.

Wuxi Jiebo Instrument Technology **** is a modern high-tech enterprise with independent intellectual property rights to high-speed analytical instrument development, production and marketing, the company's CS995 high-frequency infrared carbon and sulfur analyzer modular design, improve the reliability of the instrument, windows full Chinese operation interface, easy to operate, easy to master. The software has complete functions, providing more than 40 functions such as system diagnosis, channel selection, mathematical statistics, result correction, etc. It is suitable for the determination of steel, non-ferrous metals, cement, ores, glass, ceramics and other metal and non-metallic materials.

This instrument uses a high-frequency induction furnace to burn the sample, and the infrared absorption method is used to measure the mass fraction of carbon and sulfur in the sample.

Hello, the comparison of carbon and sulfur meters mainly refers to the comparison of the verification data of the two carbon and sulfur meters with each other to determine the accuracy and reliability of the carbon and sulfur meters, as well as to guide daily use and correct the verification deviation. 1.In the first step, the measured values of the calibration samples of the two carbon-sulfur meters are compared

The results of the samples measured by the two carbon and sulfur instruments were compared, and the numerical trend was analyzed to understand the accuracy between the instruments. 2.The second step is to compare the measured values of different samples from the two carbon and sulfur meters: compare the results of different samples measured by the two carbon and sulfur meters, and analyze the verification accuracy and reaction time, as well as the stability and accuracy of the measurement results; 3.

The third step is to compare the original verification deviation data generated during the measurement process of the two carbon and sulfur meters: carefully compare the original data of different carbon and sulfur meters, find the systematic and random errors in the instruments, and give an effective correction method; 4.Finally, the measurement accuracy and reliability of the two carbon and sulfur meters were compared:

Combined with the comparison results of the above three steps, the overall accuracy of the two carbon and sulfur meters was compared to determine their true reliability and judge which carbon and sulfur meter had the highest accuracy.

The comparison of carbon content of carbon sulfur meter between two carbon and sulfur meters The answer is that the comparison of carbon and sulfur meters is to return to the state, which generally includes checking the accuracy and precision of the instrument to ensure the quality and calibration results of the carbon and sulfur meter. 1. Accuracy check: two carbon and sulfur meters measure a sample at the same time, and use double leakage to measure the accuracy of the measurement data; 2. Detection accuracy:

The two carbon and sulfur meters were detected according to the nominal value and allowable error stipulated by the state, and the accuracy of the two carbon and sulfur meters in carbon and sulfur analysis and measurement was determined. 3. Calibration: calibrate on the two carbon and sulfur meters separately, and compare the accuracy of the measured values during calibration to ensure the accuracy of the measurement results.

4. Comparative evaluation: compare the measurement results of the two carbon and sulfur meters with each other to ensure the consistency of the carbon content measurement results.

The inorganic carbon and sulfur analyzer mainly uses high-frequency infrared absorption method to analyze the carbon and sulfur content in the sample. The carbon and sulfur content has a significant impact on the physical and chemical properties of the sample.

The sample is introduced into the high-frequency furnace of the high-frequency infrared carbon-sulfur analyzer, and the carbon and sulfur in the sample are oxidized to CO2, CO and SO2 by oxygen at the high temperature of the combustion furnace, and the generated oxides are loaded into the sulfur detection pool by oxygen after the division and water removal purification device to measure sulfur, and the mixed gas containing CO2, CO and SO2 enters the heating catalytic furnace together, and the catalytic converter catalyzes the conversion of CO2, SO2 and SO3. This gas mixture enters the heated catalytic furnace and catalyzes the conversion of CO CO2, SO2 and SO3 through the catalytic furnace. After passing through the desulfurization test tube, the mixed gas is introduced into the carbon detection tank for carbon detection, and the residual gas is discharged to the outside through the analyzer.

The output of the carbon and sulfur detector is sent to the microcomputer system for data processing through pre-amplification and a d conversion, and finally the percentage content of carbon and sulfur is obtained.

Hua Hin high-frequency infrared carbon and sulfur analyzer is manufactured using this principle to detect the content value. The innovation point of technology is the first in our company in China, the selection of leading PCI data acquisition card (system), with the host computer and peripherals communication speed fast (264MB s), AD conversion sampling rate high 400ks s), the real-time strength of the system and other characteristics, so that the computer has time to optimize the reading data, completely solve the error interference crash phenomenon. At the same time, the measurement accuracy of the instrument has been significantly improved.

At present, most of the domestic infrared carbon and sulfur analyzer manufacturers use the backward upper and lower computer RS-232 (or 485) serial communication method, resulting in slow communication speed, poor anti-interference ability, and it is easy to produce bit error interference and crash during use.

Hua Hin high-frequency infrared carbon and sulfur analyzer has strong anti-interference ability, the stability and reproducibility of detection are very high, and the instrument is bought to measure accurately, and the choice of Hua Hin high-frequency infrared carbon and sulfur analyzer is assured.

Carbon and sulfur analyzer generally refers to the general term of the instrument for the quantitative analysis of carbon and sulfur elements in iron and steel materials.

Carbon and sulfur analyzers have the following types of analysis methods and principles:

1. Infrared absorption carbon and sulfur analyzer: high-frequency infrared carbon and sulfur analyzer, arc infrared carbon and sulfur analyzer, tubular infrared carbon and sulfur analyzer.

2. Gas volume method iodometric carbon and sulfur analyzer: high-speed carbon and sulfur analyzer, gas volume method carbon and sulfur analyzer.

3. Non-aqueous titration carbon and sulfur analyzer.

4. Conductivity carbon and sulfur analyzer.

5. There are also carbon and sulfur analyzers such as ICP method, direct reading spectroscopy, X-ray fluorescence method, mass spectrometry, chromatography, activation analysis method, etc.

1. Weighing and analysis range:

4. Power supply: 220V 10[%]50Hz

5. Power consumption: 50VA

6. Air source: oxygen pressure 40kpa

7. Ambient temperature: 5 -40

1. Dust in the combustion chamber: Fe2O3 and Wo3 dust are generated during the combustion process of the sample, which accumulates above the metal filter and quartz tube. If the dust accumulation is excessive, it will have an adverse effect on the oxygen flow rate and high-frequency induction heating, so that the carbon and sulfur analysis results are low and unstable, therefore, in the process of sample analysis or after the analysis is completed, it needs to be cleaned up, and in the analysis process, it is necessary to remove dust once after 10 samples are analyzed continuously.

Dust removal method: Open the instrument panel, press the dust removal button, the instrument will automatically clean the dust, and collect the dust in the dust box.

After the sample is burned in a high-frequency furnace, the mixed gas (CO2, SO2, O2) enters the analyzer through a 3-purification tube for detection. 3. In the purification tube, the upper part is filled with magnesium perchlorate to absorb the water that may be produced after the combustion of the crucible and the sample, so as to eliminate the influence on the sulfur analysis. The lower part is equipped with absorbent cotton, and the dust that may remain in the mixed gas is purified for the second time to ensure that the detection system is not polluted by dust.

2. Dust inside the high-frequency combustion furnace: after a long time of using the instrument, a small amount of dust will accumulate inside the instrument, and most of the dust is metal dust, which is conductive, because the high-frequency induction furnace is a high-voltage, high-frequency environment, and it is easy to conduct electricity in the device after there is more dust, resulting in circuit short circuit, ignition and other phenomena, which will burn out the entire equipment in a serious way, therefore, the dust inside the instrument should be cleaned regularly according to the environment and the frequency of the sample, generally once every 6-8 months.

Dust removal method: open the high-frequency combustion furnace panel, brush the high-frequency components and high-frequency chamber with a brush, remove most of the dust, and then blow the remaining dust away with an oxygen tube against the instrument. Then close the instrument panel.

Note: During the entire operation, the instrument should be disconnected and the power cord should be unplugged to avoid accidents).

3. Replacement of purification agent of infrared carbon and sulfur analyzer.

1. The purifying agent of the purification tube in the purification system is a high-efficiency color-changing water absorbent, which is used to absorb the water in oxygen, and the color turns red after absorbing water. 2. The purifying agent in the purification pipe is alkali asbestos, which absorbs carbon dioxide in oxygen. 3. The purifying agent in the purification tube is magnesium perchlorate, which absorbs the water after the crucible and the sample are burned.

One-third of the high-efficiency color-changing absorbent turns red and needs to be replaced. Soda asbestos and magnesium perchlorate are replaced periodically (1-3 months) depending on the amount of sample analyzed.

High-efficiency absorbents, soda asbestos, and magnesium perchlorate all have particle size requirements, usually about 20 meshes, and should be paid attention to when purchasing.

4. Replacement of quartz tube of infrared carbon and sulfur analyzer.

Quartz tubes are consumables that need to be replaced and cleaned after damage or prolonged use.

1) Disassembly of quartz tubes.

Remove the shielding mask from the upper left side of the high-frequency furnace.

Lower the cylinder, open the furnace head, and take out the crucible holder and crucible base.

Loosen the pressure cap of the furnace tube above the quartz tube about half a turn counterclockwise (from the bottom to the top) to loosen the pressure cap and the sealing "O" ring, and take out the quartz tube from below the furnace tail by holding the quartz tube downward.

2) Cleaning of quartz tubes.

3) Installation of quartz tube: reverse according to the disassembly steps.