Automatic surface area and porosity analyzer Introduction VDSorb-200i automatic surface area and porosity analyzer, utilizing the physical principles of static adsorption, the specific surface area of ??the material, pore size distribution, pore volume and other characteristics were characterized. Equipment stable performance, high precision, repeatability, suitable for all industry research work. Applications rubber carbon black, silica, calcium carbonate, zinc oxide, titanium dioxide, silica, silicon oxide and other chemicals; lithium cobalt oxide battery materials, lithium manganese oxide, lithium iron phosphate, graphite, ternary materials, membranes, etc. positive and negative electrode material; catalyst material petrochemical, chemical, fine chemical, pharmaceutical, food, agriculture and other areas of catalyst materials; food additives, starch, activated clay, bentonite and other food additives; magnetic iron oxide, ferrite, tetroxide Three magnetic powder material and manganese; activated alumina adsorbents various adsorbents, molecular sieves, zeolites, activated carbon and the like; Nanomaterials ceramic powder (alumina, zirconia, yttria, silicon nitride, silicon carbide, etc.), Nano metal powder (silver powder, iron powder, copper powder, tungsten powder, and nickel powder), nano-polymer materials, carbon nanotubes and other nanomaterials; other applications superfine fiber, porous fabrics, composite materials, minerals, soil, mud , sediment, suspended solids, special paper and other special materials. Features: isothermal adsorption-desorption curve; a single point, multipoint BET surface area; Langmuir surface area; external surface area (STSA); single-point adsorption total pore volume, average pore diameter; BJH pore volume of mesoporous and macroporous pore size distribution analysis; t -plot law, as- plot method, DR Law, MP microporous routine analysis method; average particle size estimation; Special features: NLDFT pore size distribution analysis method; true density exact test; gas adsorption, adsorption heat test; quality input test ; technical parameters of the test gases: nitrogen, oxygen, hydrogen, argon, krypton, carbon dioxide, methane, and so on; the test range: the specific surface area 0.005 (m2 / g) - to no limit; mesoporous, macroporous analysis 2nm-500nm; microporous routine analysis of 0.35nm-2nm; total pore volume 0.0001cc / g- to unlimited; Repeatability: the specific surface area ≤ ± 1.0%; the external surface area ≤ ± 1.5%; aperture ≤0.02nm; true density degassing temperature ≤ ± 0.04% : room temperature -400 ℃, accuracy ± 1 ℃; partial pressure range: P / Po range of 10-4-0.998; functional testing efficiency characteristics: specific surface area of ??samples per 15 min; mesoporous, macroporous analysis per sample 2- 3 hours; analysis station: 1.5L vacuum glass liner with Dewar; P0 bits: P0 tube independent, real-time measurement of the saturated vapor pressure; lifting system: automatic lifting system; vacuum system: one-piece valve designed to greatly improve vacuum, reducing the leakage rate; vacuum: External two-stage rotary vane mechanical vacuum pump, ultimate vacuum of 2 * 10-2Pa, automatic start and stop the progress of the experimental pump, improve service life; degassing system: independent degassing preprocessing module design, the maximum temperature of 300 degrees; pressure control: PID proportional pressure control, improve test efficiency; Data acquisition: Ethernet data acquisition, acquisition speed, high precision, compatible with Windows 7 / XP 32/64 bit systems; 11. BET / BJH / t-plot / MP / DR / HK / SF / DFT, and a dozen accurate physical model of the application; 12 with helium to cool fully automatic and accurate measurement of free space