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Gas Permeability Testing -Differential Pressure Method-N500L


Product Introduction

This product is based on the test principle of the differential pressure method, and is designed and manufactured with reference to ASTM D1434, ISO 2556 and other standards. With high-precision pressure sensor and automatic differential pressure maintaining technology, this machine has high test accuracy. It is suitable for the gas permeability test of films, sheets, paper, packaging and related materials in food, medicine, medical equipment, daily chemicals, photovoltaic electronics and other industries. It can be used to test high, medium and low gas barrier materials with outstanding efficiency.


  • Brand:

    GBPI
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Product Detail

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

Items

Technical parameter

Test range

0.05~50000 cm3/(m2·24 h·0.1 MPa)

Resolution

0.0001 cm3/(m2·24 h·0.1 MPa)

Temperature control range

15~60

Temperature control accuracy

±0.2℃

Degree of vacuum

20 Pa

Vacuum resolution

0.01 Pa

Test pressure

0.1 MPa

Test gas

O2CO2N2, etc

Through the area

50.24 cm2

Sample size

Φ110 mm

Sample thickness

2 mm

Number of samples

1 piece

Dimension

440mm*680mm*380mm

Weight

35 kg

Power

450 W

Power supply

AC 220 V50 Hz 



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

 

Films

Various plastic films (PP/PET/PE/PVC/BOPP/CPP, etc.), plastic composite films, paper-plastic composite films, metal composite films, co-extruded films, aluminized films, degradable packaging films (PLA/PBAT/PBS etc.) and other membranous materials

 

Sheet

Solid medical hard sheet (PP/PVC/PTP, etc.), metal composite sheet, rubber sheet and other sheet materials

 

Paper and cardboard

Coated paper, carbon paper, silicone paper, aluminized paper, paper-aluminum-plastic composite sheet and other paper, cardboard

 

Medicinal patch, warmer patch

Medical plaster treatment patch, warm patch, dysmenorrhea patch, etc.

 

Hygiene

Sanitary napkins, pads and other hygiene products

 

Package

Wine bottles, Coke bottles, peanut oil drums, Tetra Pak packaging, vacuum packaging bags, three-piece cans, cosmetic packaging, toothpaste tubes, jelly cups, yogurt cups, etc. Plastic, rubber, paper, paper-plastic composite, glass, metal bottles Gas transmission rate test of bags, cans, boxes and drums

 

Gases

Oxygen, carbon dioxide, nitrogen, air, helium, etc.

 


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