specific surface area analyzer by nitrogen sorption principle

V-Sorb 4800S specific surface area analyzer introduction

V-Sorb 4800S 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 4800S easily ensure your investment profits and flexible equipped peripheral can satisfy different users requests.


V-Sorb 4800S specific surface area analyzer 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: 0.01m2/g to no known upper limit(specific surface area); 0.35-2nm (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 degassing concurrently
• Pressure Measurement: imported sectional measuring dual pressure transducer, notably improve the measuring accuracy at low P/Po point, two transducers’ 0-1000Torr (0-133Kpa)
• 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)

V-Sorb 4800S specific surface area analyzer 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.

V-Sorb 4800S specific surface area analyzer 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.

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