Metal element analyzer based on the widely used photoelectric colorimeter, the first to achieve the metal element analyzer product measurement light source wavelength continuously adjustable, wavelength accuracy is greatly improved, and to maintain convenient operation, curve establishment and modification function The characteristics of the fundamental solution to the photoelectric colorimetric element analyzer wavelength can not be continuously adjustable, the accuracy is not high.

The principle of metal element analysis is to pass the sample through oxygen combustion in a high temperature furnace to generate and escape CO2 and SO2 gases. This method is used to separate carbon and sulfur elements from metal elements and their compounds, and then determine the content of CO2 and SO2. Then convert the carbon and sulfur content of the sample. The general measurement methods are the following:

Infrared spectrophotometry: Carbon and sulfur in the sample are heated at high temperatures under oxygen-rich conditions and oxidized to carbon dioxide and sulfur dioxide gas. After the gas is processed into the corresponding absorption tank, the corresponding infrared radiation is absorbed, transmitted by the detector as a signal, and the output is processed by a computer. This method has the characteristics of accuracy, rapidity, and high sensitivity. Both high and low carbon and sulfur contents are used. The infrared metal element analyzer adopting this method has a higher degree of automation and higher prices. The ore analyzer is suitable for high analytical accuracy requirements. occasion.

Volumetric method: Commonly used carbon measurement methods are gas volumetric method and non-aqueous titration method. Sulfur measurement is iodometric method and acid-base titration method. In particular, the gas volumetric method for the determination of carbon and iodine content is a fast and accurate method. It is the most commonly used method for the combined determination of carbon and sulfur in China. The accuracy of the metal element analyzer using this method has a lower limit of carbon content of 0.050% and sulfur content. The lower limit is 0.005%, which can meet the needs of most occasions.

Gravimetric method: Alkaline asbestos is used to absorb carbon dioxide, and carbon content is determined by "incremental". Determination of sulfur commonly used wet method, the sample with acid decomposition oxidation, converted to sulfate, and then in the hydrochloric acid medium was added cesium chloride, barium sulfate generated by precipitation, filtration, washing, burning, weighing the final calculation of sulfur The content. The disadvantage of the gravimetric method is that the analysis speed is slow, so it is not possible to analyze the metal elements at the enterprise site. The advantage is that it has a high degree of accuracy. It is still recommended as a standard method at home and abroad and is applicable to standard laboratories and research institutions. Conductivity method: Conductance method for the determination of carbon and sulfur is characterized by accuracy, speed, and sensitivity. Mostly used for low carbon, low sulfur determination.

The above methods are all palliatives, and not all required wavelengths can be achieved. Secondly, the problem of low wavelength accuracy is still not solved, and thus it still cannot fundamentally solve the congenital defects of traditional elemental analyzers. Thus, the scope of application of the instrument and the correctness of the analysis result are improved. Such a metal element analyzer can be adapted to the user's photometric analysis methods for various elements of different materials and can arbitrarily select the wavelength of the light source required, and thus can be widely used for steel. The content analysis of various elements such as silicon, manganese, phosphorus, nickel, chromium, and copper in various black and non-ferrous and non-metallic materials such as copper, aluminum and its alloys. A metal element instrument can better satisfy the content. Metallurgy, machinery, chemical industry and other industries are facing the needs of multi-element analysis of various materials in front of furnaces, finished products, and incoming materials.