Gas permeability tester (differential pressure method) DRK-V3

■Introduction
It is suitable for the detection of O2, CO2, N2 and air permeability of plastic film, composite film, high barrier material, sheet, metal foil, rubber and other materials.

■Technical parameters
Item Parameter
Model DRK-V3
Measurement range(film) 0.1～50.000cc/㎡·24hours·0.1MPa
Sample quantity 3
Main sensor quantity 3
Test mode single chamber independant
Vacuum precision 0.01Pa
Vacuum degree ＜20Pa
Temperature control range 5℃～95℃
Humidity control range 0%RH，2%RH～98.5%RH±3%RH（note1）
Temperature control precision ±0.05℃
Temperature resolution 0.01℃
Test pressure -0.1 MPa～+0.3 MPa（regular）
Air source pressure 0.4 MPa～0.6 MPa
Test air O₂、N₂、CO₂ or other gas
Interface of carrier gas Ф6
Vacuum tube diameter 1/4"
Calibration mode Calibration of standard film and external calibration of vacuum sensor
Sample thickness ≤3mm
Sample size Φ97mm
Permeability area 38.48 cm2
Size 760 mm (L) × 575 mm (W) × 450 mm (H)
Weight 88Kg
Power supply AC 100～240V 50/60Hz

■Test principles and product description
DRK-V3 adopts the differential pressure method test principle; the pre-processed sample is placed between the upper and lower test chambers, and clamped. First, the low pressure chamber (lower chamber) is vacuumized, and then the whole system is vacuumized; when reaching the specified vacuum degree, close the test chamber, to the high pressure chamber (upper chamber) filled with a certain pressure of the test gas, and ensure the formation of a constant pressure difference on both sides of the sample (adjustable); in this way, under the action of differential pressure gradient, the gas will be penetrated by the high pressure side and low pressure side. Through the monitoring and processing of the pressure inside the low pressure side, the barrier parameters of the test samples can be obtained. It fully complies with GB1038, ASTM D1434 and other standards.
■Reference standards
YBB 00082003, GB/T 1038, GB/T7755.1, ASTM D1434，ISO 2556，ISO 15105-1，JIS K7126-A
■Test applications
Basic applications Film Gas permeability test of all kinds of plastic film, plastic composite film, paper-plastic composite film, geomembranes, co-extrusion film, aluminum plating film, aluminum foil, aluminum foil composite film, waterproof breathable film and other membrane materials.
Sheet Gas permeability test of various engineering plastics, rubber, building materials and other sheet materials, such as PP sheet, PVC sheet, PVDC sheet, etc.
Petrochemical engineering It is suitable for gas permeability test using pipeline materials, such as MDPE plastic,CO2 detection
Aerospace material It is suitable for gas permeability test of aerospace materials, such as airship, balloon helium test
Biodegradable film It is suitable for the permeability of biodegradable film, such as starch biodegradation
Extensive applications Paper It is suitable for gas permeability test of paper-plastic and other composite materials, such as cigarette packaging aluminum foil, Tetra Pak packaging sheet, instant noodles, paper cups, etc.
Hose, bottle, bag, sheet It is suitable for gas permeability test of all kinds of cosmetics hose, aluminum-plastic tube, soft bottle sheet
Paint film It is suitable for gas permeability test of all kinds of film coating, printing materials
Vacuum package It is suitable for vacuum packaging materials of electronic products, such as consumable sensors, which are easy to be corroded by gas oxidation

■Features
Prepare baseline correction function, measure system error, ensure test accuracy;
Standard film correction function, sensor external calibration function;
Real-time monitoring of the test state, the whole process of saving the test state, the realization of all the test data curve can be reproduced, easy to evaluate the test process;
The test curves of each chamber can be displayed individually or in groups, which is convenient for comparison test. Test curve with full screen display, local observation, variable ratio display and other capabilities;
Power failure data saving function, data sampling rate is adjustable, automatic repeated test function;
Open database system for data analysis
The gas permeability, solubility coefficient and diffusion coefficient of the sample can be measured simultaneously
The three test chambers are completely independent and can test three same or different samples at the same time
Wide range, high precision temperature and humidity control, meet the test under various test conditions
It provides both proportional and fuzzy test process judgment modes
The test range can be expanded according to needs to meet the requirements of high transmittance test
Data fitting can be carried out at any temperature, and the test results under extreme conditions can be easily obtained
Support toxic gas and flammable and explosive gas testing (customization needed)
The system is controlled by computer and the whole test process is completed automatically
Provide standard film for rapid calibration to ensure the accuracy and versatility of test data
Equipped with RS232 universal data interface, convenient data transmission
■Configuration
Standard configuration: host, constant temperature controller, computer, professional software, special sampler, vacuum grease, fast quantitative filter paper, vacuum pump
Optional: sampling blade, vacuum grease, vacuum pump oil, fast quantitative filter paper, humidity generator
Note: The air source of the machine is ф 6mm polyurethane pipe; gas source and distilled water are provided by users
The device appearance diagram shows the standard device appearance, the appearance of customized devices may vary