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GPT-201B Gas Permeability Tester

Model: GPT-201B
Brand: Saicheng^® Instrument
Category: Oxygen Permeability Tester
Rating: 4.8 ( based on 4 ratings )
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Product Introduction

GPT-201B is based on the differential pressure method and is professionally applicable to the determination of gas transmission rate as well as solubility coefficient, diffusion coefficient and permeability coefficient of plastic films, composite films, high barrier materials, sheeting, metal foils, rubber, tires and permeable membranes.

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Product Features

Gas transmission rate, solubility coefficient, diffusion coefficient, and permeability coefficient of the specimen could be obtained at one operation
High precision and wide range of temperature and humidity control to meet different test conditions
The instrument comes with three test modes: proportional mode, standard mode and time mode
Test range could be extended based on user requirements to test materials with high permeability
Test results could be easily obtained even at extreme conditions by data fitting function, which could work at any temperature
The instrument could be used to test poisonous, inflammable, and explosive gases (customization required)
Pneumatic sample clamp system assured the reliability of the test and makes the work high efficient.
The instrument is controlled by the PLC control system and test process is automatic
Reference film for fast calibration to ensure accurate and universal test data
GMP three-level authority management
Embedded microcomputer for test result printing.
Professional software support real-time data display, data analysis and storage
Standard USB port for convenient data transfer

Test Principle

The pre-conditioned specimen is mounted in the gas diffusion cell as to form a sealed barrier between two chambers. The lower-pressure chamber is firstly evacuated, followed by the evacuation of the entire cell. A flow of gas is thereafter introduced into the evacuated higher-pressure chamber and a constant pressure difference is generated between two chambers. The gas permeates through the specimen from the higher pressure side into the lower side. The gas permeability and other barrier properties of the specimen can be obtained by monitoring the pressure changes in the lower chamber.

Test Standards

This test instrument conforms to many national and international standards:

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

Applications

Basic Applications
Films Including plastic films, plastic composite films, paper-plastic composite films, coextruded films, aluminized films, aluminum foils, aluminum foil composite films and many others
Sheeting Including engineering plastics, rubber and building materials, e.g. PP, PVC and PVDC
Extended Applications
Various Gases Test the permeability of various types of gases, e.g. O₂, CO₂, N₂, Air and He
Inflammable, Explosive Gases Test the permeability of inflammable and explosive gases
Biodegradable Films Test gas permeability of various sorts of biodegradable films, e.g. starch-based biodegradable bags
Materials for Aerospace Usage This instrument can test the Helium permeability of airship gas bags
Paper and Paper Board Test gas permeability of paper and paper-plastic composite materials, e.g. aluminized paper for cigarette packages, Tetra Pak sheeting, paper bowls for instant noodles and disposable paper cups
Paint Films Test gas permeability of substrates coated paint films
Glass Fiber Cloth and Paper Including glass fiber cloth and paper materials, e.g. Teflon paint cloth, Teflon welding cloth and Teflon silicon rubber cloth
Soft Tube Materials for Cosmetics Including various types of cosmetic tubes, aluminum-plastic tubes and toothpaste tubes
Rubber Sheeting Including various sorts of rubber sheeting, e.g. car tires

Technical Specifications

Specification	Film Test
Test Range	0.1 ~ 100,000 cm³/m²·24h·0.1MPa（Standard）
Test Range	At least 600,000 cm³/m²·24h·0.1MPa（Extended）
Number of Specimen	1pc
Vacuum Resolution	0.05 Pa
Vacuum Degree of Test Chamber	<20 Pa
Temperature Range	Ambient ~ 40°C（Optional）
Temperature Accuracy	±0.5°C
RH Range	0%RH, 2%RH ~ 98.5%RH, 100%RH (Optional)
RH Resolution	±2%RH
Sample Size	Φ113 mm
Test Area	33.18 cm²
Test Gas	O₂, N₂, CO₂ etc (out of supply scope)
Test Pressure	0.4 MPa ~ 0.6 MPa
Port Size	Ф6 mmPU tubing
Instrument Dimension	400 mm (L) × 475 mm (W) × 450 mm (H)
Power Supply	AC 220V 50Hz
Net Weight	75 kg

Configurations

Standard Configurations: Instrument, Professional Software, Round Sample Cutter, Vacuum Grease, Fast Quantitative Filter Paper and Vacuum Pump

Optional Parts: Blades for Sample Cutter, Vacuum Grease, Vacuum Pump Oil, Fast Quantitative Filter Paper, Humidity Generator, Constant Temperature Control Device

Note: 1. The gas supply port of the instrument is Φ6 mm PU Tubing;
2. Customers will need to prepare for gas supply and distilled water.

Please Note: Jinan Saicheng is always dedicated to the innovation and improvement of product performance and function. Therefore, technical specifications are subject to change without further notice. Jinan Saicheng reserves the rights of final interpretation and revision.