The water vapor transmission test method is applicable to various plastic film, composite film and other packaging materials; it is also applicable to various packaging containers such as bottles and bags; and the determination of water vapor transmission rate of various high barrier materials in the medical and health fields. It is especially suitable for testing the water resistance of food and pharmaceutical packaging materials.
The water vapor transmission test method describes the working principle:
The sample to be tested is clamped between the constant temperature dry and wet chambers, so that there is a certain humidity difference between the two sides of the sample. Due to the difference of the humidity on both sides of the sample, the water vapor will diffuse and penetrate from the high wet side to the low wet side. On the low-humidity side, the water vapor is carried to the sensor by the dry carrier gas, and the water vapor transmission rate and the moisture permeability coefficient of the sample are obtained by analyzing and calculating the electrical signal of the sensor.
Water vapor transmission test method introduces main features
Designed in full accordance with domestic and international standards
Independent patent technology with independent intellectual property rights
Three-chamber independent test, can produce independent, combined results
Original imported sensor to ensure the accuracy and repeatability of the results
Original imported flow sensor, precise control
Original imported piping system, more suitable for testing of extremely high barrier materials
Original imported control device, reliable system operation and long life
Original imported precision flow regulation, precise control, good operating experience
Original imported operating parts, the pursuit of the ultimate user experience
Original imported temperature and humidity sensor to accurately indicate test conditions
Three-chamber water bath temperature control, fully guarantee the test temperature of the sample
Test humidity automatic control, can be set and adjusted by yourself
Computer control, fully automatic test, one-button operation
A variety of test modes are available to meet various standards, non-standard, and quick test
Professional computer software with powerful background analysis
Embedded system core, system long-term stability, good repeatability
Flexible and powerful expansion capabilities of embedded systems to meet a variety of test requirements
Over-voltage, over-current, over-temperature, overload automatic protection; multiple protection
Can support container testing (optional)
Support standard film quick calibration, also support standard source calibration, gauge calibration
Configuring a standard serial communication port
Network transmission interface supports LAN data centralized management and Internet information transmission
Support laboratory data management system to achieve unified data management. (optional)
Technical indicators
Measuring range: 0.001 ~ 52g / m2 • 24h (conventional)
0.01~1000 g/m2•24h (optional)
Resolution: 0.001 g/m2•24h
Temperature control range: 5 ° C ~ 95 ° C
Temperature control accuracy: ±0.1 °C
Wet chamber humidity: 0% RH, 35% RH ~ 90% RH, 100% RH, standard 90% RH
Humidity control accuracy: ±1% RH
Number of samples: 1 to 3 pieces
Test area: 50 cm2
Sample size: 150 mm × 94 mm
Sample thickness: ≤5mm
Carrier gas: 99.999% high purity nitrogen (air source user-supplied)
Carrier gas flow rate: 0~200 ml/min
Interface size: 1/8 inch metal tube
Power source: AC 220V 50Hz
Main unit size: 730 mm (L) × 590 mm (B) × 350 mm (H)
Host net weight: 68kg
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Including mounting accessories and instructions
EN13561-2015 certification:
Resistance to wind load: Class 1
Operating effort: Class 2
Mechanical Endurance: Class 2
Resistance to corrosion: Class 2
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