Langmuir surface area analyzer

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, Langmuir surface area analysis

Measuring Ranges: 0.01m²/g to no known upper limit(specific surface area)

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/P_o 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/P_o controllable accuracy range is 5x10^-6-0.995 

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%).