Professional, High Efficiency and Intelligent WVTR Test System
Technical Specifications
| Specifications | Film Test |
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| Test Range | 0.1~10,000 g/m2·24h (standard) |
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| Number of Specimens | 1~6 with independent test results |
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| Accuracy | 0.01 g/m2·24h |
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| Resolution | 0.0001 g |
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| Temperature Range | 15°C~55°C (standard) |
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| Temperature Accuracy | ±0.1°C(standard) |
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| Humidity Range | 10%RH~98%RH (standard is 90%RH) |
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| Humidity Accuracy | ±1%RH |
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| Air Velocity | 0.5~2.5 m/s (customization available) |
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| Specimen Thickness | ≤3 mm (customization is available for other thickness) |
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| Test Area | 33 cm2 |
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| Specimen Size | Φ74 mm |
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| Test Chamber Size | 35 L |
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| Gas Supply | Air |
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| Gas Supply Pressure | 0.6 MPa |
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| Port Size | Φ6 mm PU tubing |
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| Instrument Dimension | 660 mm (L) x 480 mm (W) x 525 mm (H) |
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| Power Supply | AC (85~264)V (47~63)Hz |
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| Net Weight | 70 kg |
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Principle
Under a certain test temperature, a constant humidity difference is generated between two sides of the test specimen. The water vapor permeates through the specimen and into the dry side. By measuring the weight changes of the test dish in different time, water vapor transmission rate and other parameters can be obtained.
Standards
This test instrument conforms to the following standards:
ISO 2528, GB 1037, GB/T 16928, ASTM E96, ASTM D1653, TAPPI T464, DIN 53122-1, JIS Z0208, YBB 00092003
This instrument is applicable to the determination of water vapor transmission rate of:
| Basic Applications | Films
Including plastic films, plastic composite films, paper-plastic composite films, geomembranes coextruded films, aluminized films, aluminum foils, aluminum foil composite films and many others |
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Sheeting
Including engineering plastics, rubber and building materials, e.g. PP, PVC and PVDC |
Paper and Paper Board
Including paper and paper board, e.g. aluminum foil paper for cigarette packages and Tetra Pak materials |
Textiles and Nonwovens
Including textiles and non-woven materials, e.g. waterproof breathable fabric, non-woven fabric for diapers and hygienic products |
| Extended Applications | Inverted Cup Method
Mount film or sheeting in test dish, cover upper surface of specimen with distilled water, and make the lower side in certain humidity. Generate a constant humidity difference between two sides; water vapor permeates through specimen and measure weight changes in different time to obtain the water vapor transmission rate.
NOTE: inverted cups are required |
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Artificial Skin
Artificial skin has to meet standard requirements for water vapor transmission rate to ensure better breath performance. This instrument can be used to test water vapor permeability of artificial skin |
Medical Products and Accessories
Including plasters, aseptic wound protecting films, face masks and scar sticks |
Solar Back-Sheets
Including solar back-sheets |
LCD Monitor Films
Including LCD monitor films |
Paint Films
Test water vapor permeability of various sorts of paint films |
Cosmetics
Test water vapor permeability of cosmetics |
Biodegradable Films
Test water vapor permeability of various sorts of biodegradable films, e.g. starch-based packaging films |
Professional
This instrument is based on the cup method, and is professionally applicable to the water vapor transmission rate test of film specimens. It is equipped with high resolution sensor, whose test resolution is 0.0001g. The sensor also provides excellent test sensitivity.
Wide range and high-precision of automatic temperature and humidity control to support various combinations of non-standard test conditionsStandard air velocity enables constant humidity difference between two sides of test dishesAutomatic reset before weighing ensures accurate weighing dataGas cylinder lifting structure design and periodically weighing method to reduce system errorsConvenient fast-access calibration ports for temperature and humidityReference film or standard weight for fast and accurate calibrationHigh Efficiency
W3/060 system adopts the precision design of round dish rack which is equipped with 6 test dishes and supports 6 different specimens to test individually at one operation. It can be also connected with 9 satellite bases together to accomplish up to 60 tests at the same time.
Precision design with high test efficiency and ultra-high system accuracy6 distinct or equivalent specimens can be tested individually with independent test results at one operation The system can be easily connected to a maximum of 10 instruments to accomplish up to 60 tests at the same timeIntelligent
The instrument is equipped with the latest operating software, with user-friendly operating interface and intelligent data management functions. It also supports LystemTM Lab Data Sharing System, which ensures uniform management of test results and test reports.
Based on the user-friendly Windows operating interface for easy operationSaves test data in different formats for convenient data transferIntelligent historical data searching, comparing, analyzing and printing functionsSupports LystemTM Lab Data Sharing System for uniform and systematic management of test results and test reports