JW-BK112 surface area and pore size analyzer characteristic: 1. Testing principle Under low temperature conditions (such as liquid nitrogen or liquid argon), the pressure of the adsorbate gas is changed in a closed vacuum system. The pressure change before and after the sample adsorbs gas molecules is measured by a high-precision pressure sensor, and the gas adsorption amount is calculated. The isothermal adsorption desorption curve is depicted, and various physical analysis models are applied for specific surface area and porosity analysis. 2. Cold free space He automatic calibration, suitable for any powder or particle material 3. Vacuum degassing A standardized design that integrates in-situ and ex situ vacuum degassing, allowing for in-situ degassing treatment of two samples at different temperatures and times simultaneously; 4. Testing module Core design, small dead volume space Vd, real-time detection and control of internal temperature Td, ensuring the scientific and accurate determination of adsorption capacity; 5. Micropore distribution The HK and SF microporous analysis models are accurately applied, with a pore size deviation of less than 0.02 nm, and have been certified by the China Institute of Metrology 6. Convenient operation and humanized design Ethernet data collection, guided operation software, one computer can control multiple instruments simultaneously and remotely; 7. Pressure sensor Core component, high-precision capacitive thin film pressure sensor, gas partial pressure P/P0 in physical adsorption analysis can reach 10-4 (N2/77K) 8. Liquid nitrogen surface control Adopting comprehensive control technologies such as 3L large capacity vacuum glass inner Dewar flask, efficient sealing, small inner section, and software correction, the non-uniform temperature field inside the sample tube is kept relatively constant during the testing process 9. Anti flying measures Self controlled adjustable multi-channel parallel vacuum system, with precise "step like" automatic control of vacuum pumping speed to prevent sample flying; At the same time, a built-in anti pumping unit is designed to minimize the possibility of ultrafine powder being pumped away, effectively avoiding instrument contamination Technical parameters: Model: JW-BK112 Test principle: Static capacity method for gas adsorption Adsorbent gases: Non corrosive gases such as N2, Ar, Kr, H2, O2, CO2, CO, NH3, CH4, etc Analysis ports: 2, alternate testing Specific surface area range: 0.0005m2/g to unknown upper limit; Standard sample repeatability (RSD) ≤± 1.0%; Aperture range: 0.35nm-500nm Accurate analysis of 2nm mesoporous macropores; Median aperture repeatability (SD) ≤ 0.2nm; Minimum pore volume: 0.0001 cm3/g Pressure sensor: 1000torr 1 piece P/P0 range: 10-4-0.998 Degassing station: equipped with 2 stations in the same position, capable of vacuum heating and degassing 2 samples simultaneously Degassing temperature: room temperature -400 ℃, accuracy 1 ℃ Vacuum pump: Double stage rotary vane mechanical vacuum pump, ultimate vacuum 7 * 10-1Pa Host specifications: length 740mm x width 500mm x height 940mm, weight approximately 70 Kg -80 Kg 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; Recommended application areas: carbon black, white carbon black, calcium carbonate, titanium dioxide, ceramic raw materials such as alumina, zinc oxide, silicon carbide, etc.
characteristic: 1. Testing principle Under low temperature conditions (such as liquid nitrogen or liquid argon), the pressure of the adsorbate gas is changed in a closed vacuum system. The pressure change before and after the sample adsorbs gas molecules is measured by a high-precision pressure sensor, and the gas adsorption amount is calculated. The isothermal adsorption desorption curve is depicted, and various physical analysis models are applied for specific surface area and porosity analysis. 2. Cold free space He automatic calibration, suitable for any powder or particle material 3. Vacuum degassing A standardized design that integrates in-situ and ex situ vacuum degassing, allowing for in-situ degassing treatment of two samples at different temperatures and times simultaneously; 4. Testing module Core design, small dead volume space Vd, real-time detection and control of internal temperature Td, ensuring the scientific and accurate determination of adsorption capacity; 5. Micropore distribution The HK and SF microporous analysis models are accurately applied, with a pore size deviation of less than 0.02 nm, and have been certified by the China Institute of Metrology 6. Convenient operation and humanized design Ethernet data collection, guided operation software, one computer can control multiple instruments simultaneously and remotely; 7. Pressure sensor Core component, high-precision capacitive thin film pressure sensor, gas partial pressure P/P0 in physical adsorption analysis can reach 10-4 (N2/77K) 8. Liquid nitrogen surface control Adopting comprehensive control technologies such as 3L large capacity vacuum glass inner Dewar flask, efficient sealing, small inner section, and software correction, the non-uniform temperature field inside the sample tube is kept relatively constant during the testing process 9. Anti flying measures Self controlled adjustable multi-channel parallel vacuum system, with precise "step like" automatic control of vacuum pumping speed to prevent sample flying; At the same time, a built-in anti pumping unit is designed to minimize the possibility of ultrafine powder being pumped away, effectively avoiding instrument contamination
