The three chamber independent pressure difference gas permeameter is a specialized device used to test the gas permeability of materials. It adopts the principle of pressure difference testing and can simultaneously test three independent samples, improving testing efficiency. This instrument is suitable for measuring the gas permeability, solubility coefficient, diffusion coefficient, and permeability coefficient of various materials such as plastic films, composite films, high barrier materials, sheets, and metal foils at various temperatures.
The working principle of a three chamber independent pressure difference gas permeameter:
The instrument is based on the principle of differential pressure testing. The pre processed sample is placed between the upper and lower testing chambers and clamped to ensure good sealing. Firstly, perform vacuum treatment on the low-pressure chamber (lower chamber), and then evacuate the entire system. After reaching the specified vacuum level, close the lower chamber of the test and fill the high-pressure chamber (upper chamber) with a certain pressure of test gas to create a constant pressure difference (adjustable) on both sides of the sample. Under the action of pressure gradient, gas will permeate from the high-pressure side to the low-pressure side. The instrument calculates key parameters such as gas permeability of the sample by monitoring the changes in pressure inside the low-pressure side.
The technical characteristics of the three chamber independent pressure difference gas permeameter are:
The three testing chambers operate independently and can simultaneously test three different samples, improving testing efficiency.
Adopting imported high-precision vacuum sensors and pneumatic control systems to ensure the accuracy and repeatability of test results.
The testing scope is wide and can meet the testing needs of materials with different barrier properties.
Equipped with 360 ° airflow circulation constant temperature technology, achieving temperature fluctuations below 0.05 ℃ during testing to avoid external environmental influences.
It has data fitting function, which can easily fit the gas permeability, permeability coefficient, solubility coefficient, and diffusion coefficient of test materials at different temperatures.
Equipped with an embedded computer system platform and using a Windows operating interface, it facilitates experimental operations and data display. The system is embedded with USB interface and network port, which facilitates external access and data transmission of the system.
Application areas of three chamber independent pressure difference gas permeameter:
Packaging industry: used to test the gas barrier performance of packaging materials for food, pharmaceuticals, daily chemical products, etc., to ensure the shelf life and safety of products.
Materials Science: Used to study the gas permeability of different materials, providing scientific basis for the development and application of new materials.
Quality control: used to monitor the quality stability of packaging materials during the production process, ensuring that products meet relevant standards.
Execution standard for three chamber independent pressure difference gas permeameter:
Meets multiple international and national standards, including but not limited to: ISO 15105-1、ISO 2556、GB/T 1038-2000、ASTM D1434、JIS K7126-1、YBB 00082003
Technical parameters of three chamber independent pressure difference gas permeameter (taking C130H as an example):Test range: 0.01~50000 cm3/m2 • 24h • 0.1MPa
Resolution: 0.001 cm3/m2 • 24h • 0.1MPa
Test temperature: 10 ℃~50 ℃ (room temperature 23 ℃)
Temperature resolution: 0.01 ℃, temperature fluctuation: ± 0.05 ℃
Temperature accuracy: ± 0.3 ℃ (calibration port)
Vacuum resolution: 0.01 Pa
Vacuum accuracy: indication ± 0.2% (1% -100% of sensor specifications)
Test chamber vacuum degree:<10 Pa
Sample quantity: 3 pieces (data independent of each other); Other quantities can be customized
Sample size: Φ 97 mm
Transmitting area: 38.48 cm2
Test gases: O2, N2, CO2 and other gases (gas source to be provided by the user)
Test gas humidification function (special customization required)
Test pressure: 10kpa~210kpa (arbitrarily set)
Gas source pressure: 0.5 MPa to 0.6 MPa (73 psi to 87 psi)
Interface size: Φ 6mm polyurethane pipe
Dimensions: 710mm (L) × 350mm (W) × 630mm (H)
Power supply: either 220VAC ± 10% 50Hz or 120VAC ± 10% 60Hz
Net weight: approximately 100kg