Gas Permeability Testing Differential Pressure Method N500L

Test Principle

The N500L gas permeability tester adopts the principle of differential pressure method. Place the processed sample between the upper and lower chambers, use a vacuum pump to evacuate the entire gas circuit system, and then add an atmospheric pressure experimental gas to the upper chamber to form a constant pressure difference between the upper and lower chambers. Due to the pressure difference, the gas permeates from the upper cavity to the lower cavity through the film, and the system can calculate the barrier performance such as the gas permeability of the sample through the pressure change of the lower cavity.

Standards

ASTM D1434, ISO 2556, ISO 15105-1, JIS K7126-1

Specifications

Features

Patented core technology, efficient and accurate testing

1) The patented automatic differential pressure maintaining technology automatically maintains the pressure difference between the two sides of the sample (the differential pressure maintaining pressure can be adjusted arbitrarily), with a built-in high-precision pressure sensor with a resolution of 0.01 Pa, good stability and low failure rate

2) Water-cooled temperature control technology, imported original temperature sensor, automatically adjust the test temperature, the temperature is accurate to 0.1 ℃.

3) The original imported vacuum pump, the ultimate pressure can reach 0.1 Pa, the vacuum pumping efficiency is high, and the noise is low.

Meet the test requirements of wide range and high applicability

1) The instrument is equipped with a single cavity, with a measurement accuracy of 0.001 cm³/(m²·24 h·0.1 MPa).

2) The measurement range is 0.02~50000 cm³/(m²·24 h·0.1 MPa), and the measurement range is wide, which can meet the testing requirements of high, medium and low barrier materials.

3) With the addition of matching accessories, it can measure the gas permeation of bottles, bags, bowls and other packaging. At the same time, it supports the permeability test of different gases such as oxygen, carbon dioxide, nitrogen, and air.

Excellent appearance, convenient control, real-time visualization of curves

1) The products are artistically designed from the perspective of ergonomics and technical aesthetics, with exquisite 3D printed shells, smooth lines, fashionable and beautiful, novel and unique.

2) Fully automatic operation, one-key test, automatic judgment, automatic shutdown.

3) Real-time display of five sets of curves of transmittance-time, temperature-time, upper chamber pressure-time, lower chamber pressure-time, differential pressure change-time, and the curve supports preview and hide function.

Application