JW-D series dynamic nitrogen adsorption specific surface area analyzer

Specific surface area is one of the important indicators to characterize the surface physical properties of micro nano powder materials, and the commonly used measurement method is nitrogen adsorption method. The dynamic nitrogen adsorption method for determining specific surface area is widely used for rapid detection of products on industrial production lines. The JW-DX dynamic adsorption specific surface measurement instrument from Jingwei Gaobo Company is accurate and efficient, making it very suitable for testing small specific surface samples such as ternary materials, graphite and other battery positive and negative electrode materials, pharmaceutical excipients, etc.
In a low-temperature liquid nitrogen environment at -196 degrees Celsius, a certain flow ratio of nitrogen helium mixed gas is introduced. A high-precision thermal conductivity cell is used to obtain adsorption peaks or desorption peaks based on the gas concentration changes before and after the sample adsorbs nitrogen molecules. The peak area is proportional to the nitrogen adsorption amount, and the specific surface area of the sample is calculated using direct comparison method or BET theory.

Performance parameters:

Instrument model: JW-DX Intelligent BET Surface Analyzer

Principle and method of intelligent BET surface area analyzer: flow chromatography, low-temperature nitrogen adsorption;

Intelligent BET surface area analyzer testing function: direct comparison of surface area;

Intelligent BET surface area analyzer for testing gases: high-purity mixed gas (99.999%);

Intelligent BET surface area analyzer testing range: specific surface area 0.01 (m2/g) - to no upper limit;

Intelligent BET surface area analyzer repeatability: specific surface area ≤± 1.0%;

Intelligent BET surface area analyzer testing efficiency: The direct comparison method averages 5 minutes per sample, and the test results are automatically obtained in real-time by the software;

Intelligent BET surface area analyzer station: 4 sample grades, direct comparison method can simultaneously analyze 3 tested samples;

Intelligent BET surface area analyzer lifting system: 4 sets of independent lifting systems are installed in situ for 4 sample grades, with electric control and automatic control, and do not interfere with each other;

Intelligent BET surface area analyzer vacuum pump: The mechanical vacuum pump has a maximum vacuum degree of 0.1Pa;

Intelligent BET surface area analyzer degassing system: modular design of ectopic vacuum degassing pretreatment system, capable of degassing 4 samples simultaneously;

Intelligent BET surface area analyzer degassing temperature: room temperature -400 ℃, accuracy ± 1 ℃;

Intelligent BET surface area analyzer partial pressure range: multi-point BET 0.05-0.35, direct comparison method 0.3 or 0.4;

Intelligent BET surface area analyzer pressure control: perform adsorption and desorption experiments under normal pressure, fully automatic control;

Intelligent BET surface area analyzer data acquisition: USB port data acquisition card and A/D converter, with fast acquisition speed and high accuracy, compatible with Windows 2000/XP 32-bit system;

Product features:

1. The external structure design is unique, simple, and generous, with no control buttons on the instrument panel. It is made of painted stainless steel plate material, which has good quality, low temperature resistance, and corrosion resistance;

2. The sample tube joint adopts a quick insertion and extraction structure, * * technology, clever design, reliable sealing, and no air leakage, completely breaking the limitations of conventional sleeve type joints. It is easy to operate and will not cause the U-shaped sample tube to break, greatly saving the cost of instrument use;

3. Adopting an automatic control lifting system, the quality is good and the noise is low. The lifting tray is made of painted stainless steel material, which is resistant to low temperature and corrosion, and is fully automatically controlled by software without manual operation, with a humanized design;

4. Liquid nitrogen splash prevention technology, which can effectively prevent liquid nitrogen splashing caused by the rise of the liquid nitrogen cup, is safe and reliable, and can also effectively prevent the volatilization of liquid nitrogen during the sample adsorption process, making it green, environmentally friendly, and cost-effective;

5. The instrument adopts dual gas inlet connections of helium and nitrogen, and all gas pipeline connections are made of PU pipes and quick plug connectors specially designed for atmospheric pressure. It has good quality, long service life, convenience, speed, and no air leakage, completely breaking the limitations of conventional stainless steel pipes and sleeve connections, overcoming the defects of stainless steel pipe connections, and fully meeting the requirements of dynamic chromatography method and surface area testing. It is designed with humanization;

6. Adopting a well-known domestic brand gas pressure and flow stabilizing device, a high-precision dual mass flow controller, can automatically adjust the required gas flow rate at will and ensure the stability of the gas flow rate. The control accuracy is high and the error is small, fully meeting the analysis and testing of multi-point BET method surface area under normal pressure, and complying with national standards;

7. Adopting a self-developed thermal conductivity cell detector constant temperature device to ensure complete consistency of temperature between the two arms of the cell and the gas flowing into the cell, completely eliminating measurement errors that may be introduced by the thermal conductivity cell itself;

8. The self-developed full-automatic data acquisition and processing software, which has been jointly improved by experts from China, Japan and the United States, is international and progressiveness! Compatible with Windows 2000/XP 32-bit systems, it can display the peak shape chart of the sample's adsorption and desorption process in real time and automatically save it as a source file. It can also display the specific surface area test results of sample desorption in real time and automatically save the test report; Offline access and viewing of saved sample desorption process peak shapes and test result reports without the need to connect to a host;

9. A domestic manufacturer that has passed technical appraisal for the first time, has obtained technical appraisal from authoritative experts led by the China Association for Analysis and Testing under the supervision of the Ministry of Science and Technology, has been awarded the EU CE certification honor enterprise, has obtained nearly 20 product certificates and proprietary software copyright certificates, and all products have been certified by the China National Institute of Metrology.

Application fields of intelligent BET surface area analyzer

Widely used for specific surface area determination of powders, particles, fibers, sheet materials, and other materials, especially suitable for electrode materials such as lithium iron phosphate, lithium cobalt oxide, lithium manganese oxide, graphite, nickel hydroxide, etc.

Professional and authoritative developer of intelligent BET surface area analyzer

Professional research and development of specific surface area, specific surface area, specific surface area analyzer, specific surface measuring instrument, true density meter, true density tester, specific surface area tester, specific surface area measuring instrument, specific surface and pore size analyzer, specific surface area analyzer, pore size analyzer, pore size distribution, porosity analyzer, porosity analyzer, specific surface and porosity measuring instrument, pore volume measuring instrument, physical adsorption instrument, etc.

Jingwei Gaobo is a company with * * * * status that specializes in the research and development, production, and sales of intelligent BET surface area measurement instruments

Our company specializes in surface area analysis, intelligent BET surface area analyzer, surface area analyzer, and surface area testing. We guarantee quality and welcome inquiries and negotiations.

This article is original from the official website of Beijing Jingwei Gaobo Technology. Reproduction is welcome, please keep the source, thank you.

The detailed article on intelligent BET surface area analyzer technology can be referred to or