Brief introduction

V-Sorb 2800P ratio surface area and pore size analyzer is app one independent research and development of specific surface area and pore size analyzer, the static capacity measurement principle. Compared with the domestic similar specific surface area and pore size analyzer and a number of unique technology using the instrument overall performance to be more perfect, to further improve the accuracy and consistency of test results, test process more stability, reaching the international advanced level of similar instruments, some functions beyond foreign products. App one of specific surface area and pore size analyzer design more from the user's perspective of, make V-Sorb 2800P than surface area and pore size analyzer has the full automation of operation, user-friendly operation interface, easy to operate; through the use of joint ventures or imported spare parts, greatly improving high device reliability and service life. The overall design of the instrument is perfect and strict product manufacturing and testing procedures, to ensure that the instrument more in line with the actual needs of users, also V-Sorb 2800P specific surface area and pore size analyzer, high performance to price ratio effective protection of the investment benefits to the users, the flexible configuration of the instrument can meet the different needs of different users.

Features

A. vacuum system
Original integration of container type pipeline system, the use of imported container line, significantly reducing pipeline connection point, greatly reduce the leakage rate, raising the degree of vacuum of the limit;
Modular structure design, one container type pipeline, the need for artificial connected components less, can according to user needs on-demand configuration and later function expansion, is conducive to the maintenance and replacement.
Germany imported double vacuum pumps, low noise, stable operation, anti oil return function of excellence, the ultimate vacuum is high, up to 2Pa - 4x10 (4Torr - 3x10).
B. control system
The electromagnetic valve control system, which is widely used in industrial control system, has strong anti-interference ability and high stability, and it is very convenient to install and disassemble;
The unique design of the test system pipeline and sample treatment pipeline separation structure, effectively prevent the process of sample treatment of impurities produced on the test pipeline pollution.
C. improve test accuracy measures
With similar imported products of the same brand of high precision silicon thin film capacitive pressure sensor, the pressure measurement accuracy of the corresponding readings of 0.15%, far better than 0.15% of the full range precision (FS) sensor;
Similar to the foreign similar products, the 01Torr and 01000Torr two pressure sensors, pressure within the test range by piecewise measuring, greatly reducing the measuring errors in the low vacuum, 01Torr silicon thin film pressure sensor accuracy is much higher than the same range of Pirani vacuum electrical resistance meter (error is 10% - 15%);
Original integration container type pipeline system, significantly reduces the pipeline connection point using the import container line, greatly reduces the dead space volume and to reduce the measurement error.
The original step into the liquid nitrogen surface control system, to ensure that the whole test liquid nitrogen surface relative to the sample tube position to maintain the same, completely eliminate the measurement error due to the introduction of dead volume change;
The unique design of the exhaust and intake control system, effectively prevent sample smoked splash of vacuum and air intake process, to ensure that the test gas cleaning and the quality of the sample without loss, protect against the pressure changes may lead to high accuracy pressure sensor and the zero and linear drift.
D. data acquisition and processing
The high precision and high integrated degree, data acquisition module, convenient connection, small error, anti-interference ability; using industry standard 485 communication mode, to equipment expansion and interconnection, convenient conversion for the RS232 and USB communication mode;
A variety of theoretical calculation model data analysis, to provide users with a full range of material analysis program; strong test data archiving, query system, is conducive to the user data management.

Technical Parameters

Nitrogen adsorption static volumetric method;
Host function: the adsorption and desorption isotherms were measured, bjh Barrett-Joyner-Halenda total pore volume of and pore size distribution analysis, sample determination of true density, micropore analysis by t-plot method, the MP method micropore analysis, analysis of HK (Horvath-Kawazoe) micropore method. Analysis of the micro hole SF (Saito-Foley) method, Dr and Da filling theory and CO2 ice dehydration micropore analysis, Langmuir compare surface area determination of bet (Brunauer Emmett teller) method of the specific surface area measurement (single point and multiple point), and the average particle diameter estimation, T - plot diagram method and specific surface area determination.
Measurement range: 0.0005 (m2/g) - to no upper limit (specific surface area); 0.35nm-2nm (micro hole), 2nm-500nm (in the hole and large hole); 0.0001 cc/g-- to no upper limit (total pore volume);
Measuring accuracy: specific surface area of repeated accuracy is less than or equal to + 1.0%; the aperture repeated error is less than or equal to 0.01; true density is less than or equal to + 0.04%; surface area is less than or equal to + 1.5%;
Vacuum system: V-Sorb original container type pipeline and electromagnetic valve control system, greatly reduce the pipeline dead space volume, improve the sensitivity of the changes of trace detection of adsorbed gas, so as to improve the resolution of the determination of pore size distribution; at the same time container type pipeline reduced connection point, greatly improve the high sealing performance and the service life of the instrument;
Liquid level control: V-Sorb original liquid nitrogen surface control system, to ensure that the test process of liquid nitrogen surface relative to the sample tube position remains unchanged, completely eliminate the measurement error due to the introduction of dead volume change;
Measurement mode: "single nitrogen" and "nitrogen + helium" two kinds of test mode perfect combination, flexible switch, meet the needs of different characteristics of the sample test;
Calibration gas: have the option to use He gas for cold free space volume calibration function, can not only have the use of "nitrogen + air traffic control" model to calibrate the cold free space;
Sample handling: sample processing by software to automatic control, including time, temperature and vacuum pump start and stop, and have treatment start time of preset functions, implements the night unmanned test and sample handling, and greatly improve the work efficiency;
Control system: using programmable controller solenoid valve control system, high integration and anti-interference ability, improve the stability of the instrument and service life;
Sample number: at the same time two sample analysis and two sample degassing processing, sample testing system and sample handling system are independent of each other and sample testing and sample degassing treatment can simultaneously, avoid the contamination of the test line, to further ensure the test precision and improve the service life of the instrument;
Pressure measurement: the use of pressure measurement of the imported double pressure sensor, significantly improve the test accuracy of low P/Po point, Torr 0-1000 (0-133Kpa), Torr 0-1 (0-133pa);
Pressure accuracy: imported silica thin film capacitive pressure sensor with an accuracy of 0.15% of the actual readings, superior to the full range of 0.15%, far higher than the resistance vacuum Pirani gage accuracy (error is 10% - 15%);
Partial pressure range: P/Po accurate and controllable range of 5x10 - 0.998 - 6;
Extreme vacuum: 4x10-2Pa (3x10-4Torr);
Vacuum pump: imported double stage vacuum pump can realize external and internal instrument in second place, inside the instrument can through software according to the need of automatic control vacuum pump start and stop, to prolong the lifetime of the vacuum pump.
Sample type: powder, granule, fiber and sheet material;
Test gas: high purity N2 gas (99.999%) or other (as required, such as Ar, Kr);
Data acquisition: high precision and high integration of data acquisition module, the error is small, strong anti-interference ability;
Data processing: Windows compatible data processing software, the function is perfect, the operation is simple, many kinds of pattern data analysis, graphic data analysis result report form.