Overview
HP-GAC301 Differential Pressure Gas Permeability Tester is based on the principle of differential pressure method and is a gas permeability tester professionally used for thin film samples. The instrument is suitable for the determination of gas permeability, solubility coefficient, diffusion coefficient and permeability coefficient of Plastic film, composite film, high barrier material, sheet and metal foil at various temperatures.
Features
1. The gas permeability, solubility coefficient and diffusion coefficient of the sample can be determined simultaneously.
2. The three test chambers are completely independent, allowing three identical or different samples to be tested simultaneously.
3. Wide Range, High Accuracy Temperature and Humidity Control to Meet Testing Under Various Test Conditions.
4. Provide proportional and fuzzy dual test process judgment mode.
5. The test range can be expanded as needed to meet the requirements of high-throughput testing.
6. Data fitting at any temperature can be performed to easily obtain test results under extreme conditions.
7. Support the testing of toxic gases and flammable and explosive gases (subject to modification).
8. The system is controlled by computer, and the entire test process is completed automatically.
9. Provide standard film for rapid calibration to ensure the accuracy and versatility of test data.
10. Equipped with RS232 universal Interface for easy data transfer.
Principle
HP-GAC301 adopts the test principle of differential pressure method. The pre-treated sample is placed between the upper and lower test chambers for clamping. First, the low-pressure chamber (lower chamber) is vacuumed, and then the whole system is vacuumed. When the specified vacuum degree is reached, the test lower chamber is closed and a certain pressure test gas is filled into the high voltage chamber (upper chamber) to ensure that a constant pressure difference (adjustable) is formed on both sides of the sample. Under the action of the pressure difference layer, the gas will penetrate from the high voltage side to the low pressure side, and through the monitoring and processing of the internal pressure on the low pressure side, the various barrier parameters of the test sample can be obtained.
Applications
Film, composite film, co-extruded film, aluminized film, aluminum foil, PP sheet, PVC sheet, PVDC sheet
Standards
ISO 15105-1、ISO 2556、GB/T 1038-2000、ASTM D1434、JIS K7126-1、YBB 00082003
Steps
1. Place the pre-treated specimen between the upper and lower test chambers and clamp it.
2. Vacuum the low-pressure chamber (lower chamber), and then evacuate the entire system.
3. When the required vacuum is reached, close the test chamber.
4. Fill the high voltage cavity (upper cavity) with a certain pressure of the test gas to ensure that a constant pressure difference is formed on both sides of the sample.
5. The system automatically monitors the change of internal pressure on the low pressure side and calculates various barrier parameters of the sample.
Notice
* To support the testing of toxic gases and flammable and explosive gases, modifications are required.
Test gases (e.g. O2, N2, CO2, etc.) need to be provided by the user.
* The humidity generating device needs to be purchased separately.
Please ensure that the air source pressure is within the range of 0.4 MPa to 0.6 MPa before use.
* Power supply voltage is AC 220V 50Hz.
