What is element analyzer?
is an instrument that achieves the analysis of several elements in a sample simultaneously or individually. All types of elemental analyzers
are designed based on the chromatographic principle, although they differ in structure and performance. The elemental analyzer
works on the principle that the sample is burned by high-temperature oxidation under the action of a composite catalyst to produce nitrogen gas, nitrogen oxides, carbon dioxide, sulfur dioxide and water, and is driven by a carrier gas into the separation and detection unit. After the adsorption column retains the compounds of non-nitrogen elements by adsorption, the oxides of nitrogen are reduced to nitrogen gas and then determined by the detector. Oxides of other elements are then resolved by adsorption on the adsorption-desorption column and are separated and determined in the order of C, H and S. The presence of fluorine, phosphate or large heavy metals in the sample has a negative effect on the analysis results, while strong acids, bases or substances that can cause explosive gases are prohibited from using the elemental analyzer for determination. Due to the complex mineral composition and crystalline structure of soil samples, the sample particles must be sufficiently homogeneous when using the elemental analyzer in order to ensure the accuracy and stability of the measurement results.
As a routine laboratory instrument, the elemental analyser
can simultaneously perform quantitative analysis and determination of C, H, N, S, and elemental content in organic solids, highly volatile and sensitive substances. It plays an important role in the study of organic materials and the elemental composition of organic compounds. It is widely used in chemical and pharmacological products, such as fine chemicals, drugs, fertilizers, and petrochemicals for the content of carbon, hydrogen, oxygen, and nitrogen elements, because it can analyze substances precisely using advanced technology to detect Si, Mn, P, Cr, Ni, Mo, Cu, and Ti in a variety of materials such as plain carbon steel, low-alloy steel, high-alloy steel, ductile iron, raw cast iron, and alloy cast iron. The instrument reveals changes like compounds and obtains useful information, which is one of the effective means of scientific research.
The five elements determined by the elemental analyzer
are specifically carbon, sulfur, silicon, phosphorus and manganese in steel. The method of identifying which elements (or ions) a substance under test is composed of is called qualitative analysis, while the method used to determine the relationship between the amounts of the components (various chemical components) (usually expressed as a percentage) is called quantitative analysis.
The chemical elemental analysis methods
used for the analysis of the five elements of a substance can be divided into classical chemical analysis and instrumental analysis. The former uses chemical methods to achieve the purpose of analysis, while the latter mainly uses chemical and physical methods (especially the final determination stage often applies physical methods) to obtain the results, some of these analytical methods apply more complex and specific instruments. Although the current development of instrumental analysis is rapid, and the vast majority of various analytical work is done by applying instrumental analysis, the classical chemical analysis methods still have their important applications. The results measured by some large precision instruments are relative values, not precise values, while the standard reference substances needed for calibration and calibration of the five major elemental analysis instruments are generally determined by accurate classical chemical analysis methods. Therefore, instrumental methods
and chemical analysis methods
are complementary, and it is difficult for one method to completely replace the other.Metal elemental analyzers
perform qualitative or quantitative analysis of substances based on the unique chemical properties of various elements and their compounds, using the chemical reactions associated with them. Quantitative chemical analysis can be divided into weight analysis, titration analysis and gas volumetric method according to the final measurement method.
Type of element analyzer
High-frequency infrared carbon and sulfur analyzer
Equipped with a high-frequency induction combustion furnace, high-frequency infrared carbon and sulfur analyzer
can quickly and accurately determine the content of carbon and sulfur elements in iron alloy, stainless steel, carbon steel, alloy steel, cement, cast iron, ductile iron, non-ferrous metals, rare earth metals, ore, coke, coal, slag, ceramics, catalyst, foundry core sand, iron ore, inorganic and organic materials and other materials.
Feature of high-frequency infrared carbon and sulfur analyzer
a. Adopt an infrared detector with low noise, high sensitivity and high stability.
b. The modular design of the whole machine improves the reliability of the instrument.
c. The electronic balance is automatically online, without quantitative weighing samples.
d. Dynamic display of the data and carbon and sulfur release curves during the analysis.
e. The measurement linear range is wide and expandable.
f. Reasonable high-frequency circuit design. High-frequency furnace power-adjustable, which is suitable for different material sample analysis requirements.
g. Automatic furnace head cleaning device, which can reduce the influence of dust on the analysis results.
h. The head heating device converges the conversion of sulfur and improves the stability of sulfur determination.
Main technical parameters of high-frequency infrared carbon and sulfur analyzer
|Measurement range||Carbon: 0.00001%-99.999%
|Analysis error||Carbon meets ISO9556-89 standard
Sulfur meets ISO4935-89 standard
|Analysis time||25-60 seconds adjustable, generally in 35 seconds.
|Electronic balance||Weighing range: 0-120g
Reading accuracy: 0.0001g
|Electronic balance||Power: 2.5KVA
Metal elemental analyzer is a new comprehensive analyzer. It can meet the detection of C, S, Mn, P, Si, Cr, Ni, Mo, Cu, Ti, V, Al, W, Nb, Mg, total rare earth, Co and other elements in carbon steel, alloy steel, stainless steel, gray iron, ductile iron, heat-resistant steel, malleable steel, wear-resistant steel and cast iron. The instrument has established a powerful database for the storage and query of analysis result data and working curves. It is convenient to modify the data and add and delete curves.
Feature of metal analyzer
a. The system is controlled by a PC and can accomplish the determination of the content of elements in most metal materials. The system program is prepared by the current fashionable visual programming language, so the system is powerful and has a friendly interface.
b. The system guarantees the measurement accuracy by automatic tracking at zero and full degree during the analysis and by the PC for auxiliary calibration. The operation of the system is simple and fast.
c. The electronic balance and the system are online, which can realize the analysis process of variable weighing, and improve the analysis speed of the system.
Main technical parameters of metal analyzer
|Metal analyzer||Main technical parameters
|Carbon measurement by gas volumetric method / sulfur measurement by iodometric method||a. Measurement range
C: 0.02-6.00% (need to change the weighing volume)
|b. Measurement time: about 45 seconds (excluding sampling and weighing time)
|c. Measurement accuracy: in line with GB223.69-97, GB223.68-97 standards
|Photoelectric colorimetric analysis||a. Range: 0-1.999A absorbance value, 0-99.99% concentration value
|b. Measurement accuracy: in line with GB223-88 standard
|c. Measurable elements: silicon, manganese, phosphorus, nickel, chromium, molybdenum, copper, titanium, etc.
Maintenance of element analyzer
Elemental analyzer instrument
Daily maintenance of the elemental analyzer
includes cleaning of ash tubes, replacement of drying tubes, filling of combustion/rapid combustion tubes and reduction tubes, and removal and cleaning of ball valves, etc. The operator can set the maintenance cycle count reminder according to the nature of the sample in the workstation software.
A. Ash tube cleaning
It is better to clean the ash before each time the machine is turned on. According to the nature of the sample and the sample volume to determine the cleaning time, the ash should not exceed the lower end of the oxygen gun to prevent the oxygen cannot be added.
B. Desiccant tube replacement
When it is observed that more than half of the desiccant of the drying tube is discolored, the packing of the drying tube should be replaced.
C. Filling of combustion tube/rapid burn tube and reduction tube
When the factor value of the sample test is not between 0.9 and 1.1, the combustion tube/rapid burn tube needs to be refilled and the working curve needs to be redone.
When it is observed that the color of the reduction tube linear copper becomes black, or the measured value of N becomes larger, or there are 2 peaks of N, the reduction tube needs to be refilled and the working curve needs to be redone.
When taking off the combustion tube / fast combustion tube and reduction tube, the operator should pay attention to the temperature at the quartz bridge and wear gloves to prevent burns.
D. Ball valve disassembly and cleaning
Remove the ball valve from the instrument, and then disassemble and remove the parts of the ball valve in turn. Use silk cloth and alcohol to clean these parts. Note that do not use alcohol to clean the O-ring. After cleaning, then assemble the ball valve, note that the hole of the ball is facing the combustion tube after installation, which means the direction is downward.
How to buy element analyzer?
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