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Test principle
Desiccant (weight gain method) or place water (weight loss method) in the sample cup; seal the sample cup with the sample and place it in the test box; control the temperature, humidity and wind speed of the test box; The difference in humidity drives the water vapor to penetrate the sample, and the mass of the sample cup increases or decreases; the mass of the sample cup is regularly weighed, and the performance parameters such as the water vapor transmission amount of the sample are calculated.
Standard
ASTM E96、GB/T 1037、GB/T 16928、GB/T 17146、GB/T 12704、GB/T 19082、GB/T 21332、ASTM D1653、ISO 2528、TAPPIT464、DIN 53122-1、YBB00092003
Technical parameters
| Item | Parameters |
| Measuring Range | 0.05~10,000 g/(m²·24h) |
| Resolution | 0.0001 g/(m²·24h) |
| Number of Testing Stations | 12 |
| Measuring Range of the Balance | 220 g |
| Division Value of the Balance | 0.1 mg (0.01 mg optional) |
| Temperature Control Range | 10~50℃ ±0.1℃ |
| Wind Speed | 0.3~2.5 m/s (0.03~0.5 m/s optional) |
| Humidity Control Range | (5~90) %RH |
| Humidity Control Accuracy | ±2%RH |
| Standard Testing Area | 33 cm² |
| Sample Size | Φ74 mm |
| Sample Thickness | ≤3 mm |
| Testing Method | Weight Gain Method, Weight Loss Method |
| Specification of Carrier Gas | Compressed Air |
| Gas Source Pressure | ≥0.6 MPa |
| Overall Dimensions | 830 mm×670 mm×440 mm |
| Interface Size | Φ6 mm Polyurethane Tube |
| Weight | 75 kg |
| Power Supply | AC 220 V, 50 Hz |
