Gas Permeability Tester

Product Features

• Can simultaneously measure the gas permeability, solubility coefficient, and diffusion coefficient of the sample
• The instrument can realize the complete independence of three test chambers, and can test three same or different samples at the same time
• Adopt imported high-precision vacuum sensor and pressure sensor
• The system has self-test ability to avoid continuous testing under fault conditions
• The test range can be expanded as needed to meet the requirements of high transmittance test
• High-precision water bath temperature control system, automatic control of heating and cooling, wider and more accurate temperature control range; parallel operation, higher reliability;
• Patented limit zero point and sealed piping system, using baseline technology to remove system errors and make test results more accurate
• Unique design of sample anti-side leakage structure makes the installation and sealing of the sample more stable and reliable
• Precise pressure control capability and pressure holding function

• Using high-quality components from internationally renowned brands to ensure the stability and reliability of instrument operation
• High-speed vacuum capability, reducing vacuum time, more thorough degassing, and improving test accuracy and test efficiency
• The instrument can realize the test of toxic gas and flammable and explosive gas (requires modification)
• The instrument can realize the gas permeability test under unconventional pressure (need to be modified)
• The instrument has the function of saving when power off to ensure the safety and integrity of the test
• Full-process monitoring and automatic recording, the test process can be reproduced in the whole process

Test principle

Based on the test principle of the differential pressure method, the pre-treated sample is placed between the upper and lower test chambers and clamped. First, vacuum the low-pressure chamber (lower chamber), and then evacuate the entire system; when the specified vacuum degree is reached, close the lower test chamber, fill the high-pressure chamber (upper chamber) with a certain pressure of test gas, and ensure that the A constant pressure difference (adjustable) is formed on both sides of the sample; in this way, the gas will infiltrate from the high pressure side to the low pressure side under the action of the pressure difference gradient. Barrier parameters.

Reference Standards

ISO 15105-1、ISO 2556、GB/T 1038-2000、ASTM D1434、JIS K7126-1、YBB 00082003

Application

Technical Parameters