Instrument Introduction
V-Sorb 4800P is Gold APP self-developed surface area and porosity analyzer which utilizes static volumetric. Compared with other companies’ analyzers, multi pioneered techs make instrument’s performance much better, heighten accuracy and consistence of results, enhance measurement stability, all these lead to a leading level in domestic competitors and partial applications surpass foreign instruments. Products designed from the user perspective and equipped with fully automated operation, user-friendly interface makes it easy to learn, imported accessories assure stability and prolong life. Perfect design, sophisticated production and strict testing guarantee to meet customers’ real demands. The high cost performance of V-Sorb 4800P easily ensure your investment profits and flexible equipped peripheral can satisfy different users’ requests.
Parameters
Analysis Method: static volumetric nitrogen adsorption
Versatility: Adsorption and desorption isothermal curve analysis, Single and multi point BET method specific surface area analysis, T-plot method external surface area analysis, True density analysis, BJH mesopore analysis, BJH total pore volume and porosity analysis, T-plot micropore analysis, MP micropore analysis, Langmuir surface area analysis
Measuring Ranges: 0.01㎡/g to no known upper limit(specific surface area); 0.35 to 2nm (micropore); 2-400nm (mesopore and macropore)
Accuracy: repeatability errors ≤1.5%
Vacuum System: V-sorb unique assembling-installed manifolds and electromagnetically operated valve control system, greatly reduce the dead volume; improve the adsorbate micro-change sensitivity; enhance pore size distribution analysis resolution; decrease connecting points; strengthen sealing performance and prolonged instrument life
Coolant Level Controller: V-sorb original coolant level control system, ensure the coolant level unchanged when compares with sample cells in the whole analysis process, completely eliminate the analysis errors caused by dead volume change
Analysis Types: N2 and N2+He two types available
Gas Dosing: Can choose He (99.999%) to dose the cold volume, not only “He+Empty cell” one type
Control System: programmable controller electromagnetically operated valve system with high integration and strong anti-interference ability, enhance instrument’s stability
Sample Ports: four samples’ analyzing and four samples’ degassing concurrently
Pressure Measurement: imported sectional measuring dual pressure transducer, notably improve the measuring accuracy at low P/Po point, 0-1000Torr (0-133Kpa), 0-10Torr (0-1.33Kpa)
Transducer Accuracy: imported silicon thin film pressure transducer, accuracy can reach 0.15% of real reading, better than 0.15% of F.S.(full-scale), far accurate than Pirani resistance vacuum gauge(general error is 10%-15%)
Partial Pressure: P/Po controllable accuracy range is 5x10-6－0.995
Ultimate Vacuum: 4x10-2Pa (3x10-4Torr)
Vacuum Pump: built-in bipolar vacuum pump controlled by patented software which can auto control pump’s start/stop
Sample Types: powders, particle, fiber, flakes and other materials
Adsorbate Gas: high purity nitrogen(≥99.999%), Ar, Kr etc. optional
Data Acquisition: high-precision and high integration data acquisition modules, minimal error, strong anti-interference ability
Data Reduction: Windows®-base independent developed Gold APP softwareTM, perfect versatility, produced full featured and multi-model reports
Specifications: Height 22.05 inches (56cm)* Width 20.87 inches (53cm)*Depth 23.62 inches (60cm); 132 pound (60kg)
Features
A: Vacuum System
1. Unique integral manifolds system, decrease connecting points apparently, reduce leak rate, improve ultimate vacuum.
2. Modularity design can configure as customer requests, benefits future functions extension and instrument maintenance.
3. Germany imported bipolar vacuum pump, low noise, stable working, oil-return prevention; ultimate vacuum can reach 4x10-2Pa (3x10-4Torr).
B: Control System
1. Industry used programmable controller electromagnetically operated valve system, strong anti-interference ability, convenient for installation and uninstallation.
2. Separated analysis and treatment manifolds can prevent foreign matter to contaminate manifolds in sample treatment.
C. Measures for Improving Accuracy
1. Imported silicon thin film capacitive pressure transducer, accuracy can reach 0.15% of real reading, better than 0.15% of F.S. (full-scale).
2. 0-10Torr (optional) and 0-1000Torr dual pressure transducers, sectional measurement in pressure range can reduce errors in low vacuum, 0-10Torr silicon thin film transducer is highly accurate than Pirani resistance vacuum gauge (general error is 10%-15%).
3. Unique assembling-installed manifolds system, decrease connecting points and reduce leak rate apparently.
4. Original stepping coolant level control system, ensure the coolant level unchanged when compares with sample cells in the whole analysis process, completely eliminate the analysis errors caused by dead volume change.
5. Pioneered gas outlet and inlet control system can efficiently prevent sample splash in evacuation and gas inlet process, guarantee clean manifolds and sample weight unchanged, avoid zero and liner drifting caused by transducer’s macro-change.
D. Data Acquisition and Reduction
1. High precision and integration data acquisition module is easy to connect, minimal errors and strong anti-interference ability; standard 485 communication mode is good for analyzer’s applications extension and interconnection, can also conveniently switched to RS232 and USB modes.
2. Multi calculating methods for data reduction provides all-round sample analysis options; powerful data archiving and searching system helps a lot for data management.
Application
1. Super micro powder, nanomaterials, particle and fiber shaped specific surface area analysis.
2. Product quality control for powder materials related corporations.
3. Research institutes, universities for BET theory teaching.
4. Full cells, catalysts, additives, adsorbent, ceramics, magnetic materials, energy storage materials etc.
5. Other researches concern surface area performance.
Carbon Black / White Carbon Black
Tire and rubber manufacturers find that the specific surface area of carbon black has great influences on the service life, friction and rubber performance. The carbon black or white carbon black with proper specific surface area can be selected according to the tire or rubber purposes.
Nanometer Materials
Surface area and porosity of nanometer materials are decisive for their hydrogen storage, oxygen storage and special substance adsorption, such as the typical CNT (carbon nano tube).
Electric Field
The inner filling materials of capacitor require high specific surface, so as to produce capacitor with smaller volume but larger capacity. Likewise, in the design of ordinary batteries, it is also necessary to consider the material's specific surface area, so as to gain smaller volume and larger storage power.
New Energy Battery
New energy battery is the hot field for research currently. It controls the proper stored energy density by controlling the material's specific surface.
Paints and Coatings
Filler surface area of paints and coatings affects the smoothness, texture, color, color saturation, brightness, solid content and film's adhesion property. The porosity can control the application program's performance, such as liquidity, curing time and coating thickness, etc.
Catalyst
Catalyst's active specific surface area and pore structure have great influence on the conversion ratio. Choose the aperture size to filter or transit some substance selectively, so as to create a selective catalyst, and in turn, produce the desired products.
Automobile Exhaust
Purification of resultants of the automobile exhaust requires special catalyst material. The exhaust purification using transition metal is of important practical significance and economic value. The specific surface and porosity decide the efficiency, service life and economical efficiency of the exhaust conversion device.
Combustion Control
In the research and development of rocket propellant and explosive, it is necessary to control the combustion rate by controlling the material's specific surface. If the speed is too high, it may be more dangerous; while if the speed is too low, it may cause failure and inaccuracy.
Active Carbon
Besides serving as an extremely great carrier material, the active carbon is also an ideal filtering material. The filtering effects can be controlled by controlling the active carbon's specific surface and porosity. It has important application in the gas and liquid purification fields.
Pharmaceuticals
The tablet dissolution rate and medical effect action time can be controlled by rationally distributing the effective constituents of the medicines on the filler with certain specific surface area and porosity.
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