PERME W3/060 Water Vapour Transmission Rate Testing System
For measurement of the water vapour transmission rate of flat sheet materials, such as high barrier materials, polymer films, laminated films, paper and breathable membranes.
For the measurement of the water vapour transmission rate of flat sheet materials, especially high barrier materials, polymer films, laminated films, paper and breathable membranes.
Microsoft ® Windows ® operating system based software control and capable of supporting up to nine satellite modules. This offer the capacity for testing 60 test specimens simultaneously.
Standards
Complies with: ASTM E96, ASTM D1653,TAPPI T464, ISO 2528, DIN 53122-1, JIS Z0208, YBB 00092003, GB 1037, GB/T 16928
Features
- Master base unit offers computer control of the automatic testing process, using six independent chambers
- A single master base can support nine satellite modules – offering up to 60 independent samples tested simultaneously
- Cups are weighed at regular intervals with auto zero before each weighing
- Cylinder cam type lifter to raise and lower the cups
- Standard gas flow
- Automatic temperature control
- Automatic humidity control
- Temperature and humidity testing port
- Test report can be stored in text, data base and spreadsheet formats
- Broad power range
- Two rapid calibration modes of reference weight and reference film
- Network transmission interface for LAN data management and Internet data transmission.
Testing Principle
A test specimen is mounted in a test cup. A specific humidity difference is created between the two sides of the test specimen at a specific temperature.
The water vapour permeates through the specimen from the inner, more humid side to the drier outside.
By measuring the weight change of the cup due to the permeation of the water vapour out of the cup, the rate of transmission is determined.
Technical Specification
| Test Range: 0.1-10,000 g/m per day |
Test Accuracy: 0.01 g/m per day |
Resolution: 0.0001 g |
| Test Temperature: 15°C – 55°C |
Temperature Accuracy: ±0.1°C |
Purge Speed: 0.5-2.5 m/s (Optional) |
| Testing Humidity: 10%RH – 98% RH (Standard 90% RH) |
Humidity Accuracy: ±1%RH |
Test Area: 33 cm2 |
| Number of Specimens: 1 – 6 pieces |
Extension Capacity: 9 satellite modules (1-60 specimens) |
Sample Thickness: ≤3mm (other thickness possible by factory customization) |
| Sample Size: φ74mm |
Volume of Testing Chamber: 35L |
Inlet Size: Φ 6mm polyurethane pipe |
| Gas Source: Air |
Gas Source Pressure: 0.6MPa |
Physical properties
- Dimensions: 660mm (L) x 480mm (B) x 525 mm (H)
- Power: AC 110 ～ 220V 50/60Hz
- Net weight: 70kg
Includes
| Master base station | Software | Cups |
| Gas dry device | Auto drying filter | Calibration weight |
| Communication cable | Sampling cutter | Valves and pipe |
Options available
- 1-9 satellite modules
- Reference film
- Air compressor
- Desiccant
Note
Air source and distilled water to be provided by the user
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