JW-DA dynamic nitrogen adsorption specific surface area analyzer characteristic: 1. Desorption peak Used for rapid testing of products on industrial production lines. Accurate and efficient testing, it is very suitable for testing small surface area samples such as ternary materials, graphite and other battery positive and negative electrode materials, pharmaceutical excipients, etc. 2. Automatic adjustment of nitrogen partial pressure BET testing uses high-precision mass flow controllers of 70ml/min and 30ml/min for fully automatic nitrogen partial pressure regulation, with high control accuracy and small errors, ensuring the stability and accuracy of gas flow through the sample surface; (Patent No. 2517307) 3. Calibration gas The calibration gas for BET test is nitrogen, and the calibration system is automatically controlled by full solenoid valve, which breaks the limitation of traditional six way valve control and is progressiveness; (Patent No. 2508179) 4. Convenient operation and humanized design Fully automatic control and operation of surface instruments; Dynamically display the adsorption or desorption process of each sample on the testing interface, with real-time display of adsorption or desorption peaks, and real-time calculation of peak area and adsorption capacity for each sample; During comparative testing, the specific surface area results of each sample are displayed in real-time and the test data is automatically saved as a source file. It supports offline analysis without online connection and can be copied; The dynamic vacuum heating and degassing machine is equipped with a micro vacuum pump and a heating furnace, with a furnace body temperature of ≤ 400 ° C ± 1 ° C. After heating and degassing the sample, it can be transferred to the main body of the surface area analyzer for testing 5. Strong upgradability DX type instrument standard configuration comparison method surface testing function, can be upgraded to multi-point BET surface testing instrument; Dynamic external 4-station vacuum heating degassing machine, an optional equipment, is recommended for users to choose, and can be added at any time in the future 6. Analysis Station 4, each sample undergoes independent adsorption process, achieving interference free and differential testing of multiple samples, fully ensuring the parallelism of test results at each analysis station, with a repeatability error of ≤± 1.0% 7. Vacuum heating and degassing Optional. The external 4-station vacuum degassing machine can perform degassing pretreatment on 4 samples simultaneously, and when used in conjunction with the surface area analyzer host, it can greatly improve testing efficiency. The maximum degassing temperature is 400 ℃; (Patent No. 2516757) 8. Dewar flask 1L capacity high insulation stainless steel inner liner Dewar flask 9. Anti splash technology for samples Independently developed and designed with a built-in anti splash unit, which can effectively prevent powder samples from flowing into the internal pipeline of the instrument with the flowing gas, and can effectively prevent the instrument from being contaminated Technical parameters: Model: JW-DA Test principle: Low temperature nitrogen adsorption, flow chromatography method Method feature: Traditional detachment technique. Using desorption peaks, the four samples are parallel and not independent, and the signal peaks are diluted, which is not suitable for precise testing of small surface area samples with a specific area of less than 10m2/g Testing function: Comparison method compared to surface area testing; Single point and multi-point BET specific surface area testing Test gas: high-purity nitrogen (99.999%)+high-purity helium (99.999%) Nitrogen partial pressure P/P0 range: 0.05-0.35 (multi-point BET) Test range: Specific surface area of 0.01m2/g to no known upper limit, not suitable for detection of microporous materials Repetition accuracy: Carbon black standard sample ≤± 1.5%; Analysis stations: 4 Testing efficiency: The comparative method takes about 9 minutes to test each sample; Multi point BET testing takes about 30 minutes for each sample; Host specifications: length 610mm x width 460mm x height 680mm, weight approximately 48Kg; Environmental temperature requirement: Room temperature, it is recommended to equip with air conditioning Environmental humidity requirement: 10% -90% Power requirements: AC 220V ± 20V, 50/60HZ, maximum power 300W, current 5A;
characteristic: 1. Desorption peak Used for rapid testing of products on industrial production lines. Accurate and efficient testing, it is very suitable for testing small surface area samples such as ternary materials, graphite and other battery positive and negative electrode materials, pharmaceutical excipients, etc. 2. Automatic adjustment of nitrogen partial pressure BET testing uses high-precision mass flow controllers of 70ml/min and 30ml/min for fully automatic nitrogen partial pressure regulation, with high control accuracy and small errors, ensuring the stability and accuracy of gas flow through the sample surface; (Patent No. 2517307) 3. Calibration gas The calibration gas for BET test is nitrogen, and the calibration system is automatically controlled by full solenoid valve, which breaks the limitation of traditional six way valve control and is progressiveness; (Patent No. 2508179) 4. Convenient operation and humanized design Fully automatic control and operation of surface instruments; Dynamically display the adsorption or desorption process of each sample on the testing interface, with real-time display of adsorption or desorption peaks, and real-time calculation of peak area and adsorption capacity for each sample; During comparative testing, the specific surface area results of each sample are displayed in real-time and the test data is automatically saved as a source file. It supports offline analysis without online connection and can be copied; The dynamic vacuum heating and degassing machine is equipped with a micro vacuum pump and a heating furnace, with a furnace body temperature of ≤ 400 ° C ± 1 ° C. After heating and degassing the sample, it can be transferred to the main body of the surface area analyzer for testing 5. Strong upgradability DX type instrument standard configuration comparison method surface testing function, can be upgraded to multi-point BET surface testing instrument; Dynamic external 4-station vacuum heating degassing machine, an optional equipment, is recommended for users to choose, and can be added at any time in the future 6. Analysis Station 4, each sample undergoes independent adsorption process, achieving interference free and differential testing of multiple samples, fully ensuring the parallelism of test results at each analysis station, with a repeatability error of ≤± 1.0% 7. Vacuum heating and degassing Optional. The external 4-station vacuum degassing machine can perform degassing pretreatment on 4 samples simultaneously, and when used in conjunction with the surface area analyzer host, it can greatly improve testing efficiency. The maximum degassing temperature is 400 ℃; (Patent No. 2516757) 8. Dewar flask 1L capacity high insulation stainless steel inner liner Dewar flask 9. Anti splash technology for samples Independently developed and designed with a built-in anti splash unit, which can effectively prevent powder samples from flowing into the internal pipeline of the instrument with the flowing gas, and can effectively prevent the instrument from being contaminated
