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Test principle
W401L water vapor transmission rate tester adopts the principle of infrared method. Fix the pre-treated sample in the middle of the test chamber, divide the test chamber into a high-humidity side and a low-humidity side, the humidified nitrogen flows on one side of the film, and the dry nitrogen (carrier gas) flows at a fixed flow rate on the other side, in the presence of a humidity gradient, water vapor will permeate from the high-humidity side to the low-humidity side, and the water vapor that passes through the sample is carried to the infrared sensor by the flowing dry nitrogen, and the water vapor transmission rate (and other parameters) of the sample is obtained by the electrical signal output by the sensor.
Working principle diagram
Standard
ASTM F 1249, BS EN ISO 15106-2, JIS K7129, GB/T 26253, YBB 00092003
Specification
|
Item |
Technical Parameters |
|
Test range |
0.01～200 g/(m2·24h) |
|
Resolution |
0.0001 g/(m2·24h) |
|
Temperature control range |
15～45℃ |
|
Temperature control accuracy |
±0.2℃ |
|
Humidity control range |
(5～90) %RH, 100%RH |
|
Humidity control accuracy |
±2%RH |
|
Permeable area |
50.24 cm2 |
|
Sample size |
Φ100 mm |
|
Sample thickness |
≤3 mm |
|
Sample quantity |
1 piece |
|
Carrier gas |
99.999% Nitrogen (user-provided) |
|
Carrier gas pressure |
≥0.1 MPa |
|
Carrier gas flow |
5~100 mL/min |
|
Dimension |
440mm*680mm*380mm |
|
Power |
450 W |
|
Power supply |
AC 220 V, 50 Hz |
Features
High-precision patented infrared moisture sensor
The high-precision infrared moisture analysis sensor independently developed and prepared by GBPI has ultra-high stability, ultra-low failure rate and ultra-long service life, high sensitivity, and a resolution of up to 0.0001 g/(m2·24h).
Accurate and reliable test data
Precise control of test temperature and humidity. Equipped with a high-precision temperature and humidity sensor, the temperature and humidity of the test chamber are stable, the temperature control accuracy can reach 0.2°C, and the humidity can be accurate to ±2%RH.
Automatic test mode, real-time monitoring of temperature, humidity, flow values and curves during the test process, high test repeatability.
Ultra-wide test range, high instrument applicability
The instrument is equipped with a single cavity, which is compact and flexible, saving space.
Ultra-wide test range [0.01～200 g/(m2·24h)], meeting the test requirements of various high, medium and low barrier materials, with the addition of adapter accessories, it can test the water vapor permeability of bottles, bags, bowls and other containers excess.
