Product Description
WPT-301H Water Vapor Permeability Tester is is based on the Gravimetric method, and is applicable to the water vapor transmission rate test of plastic films, composite films, sheets and other materials used in packaging, medical and construction industry. By testing the water vapor transmission rate, the technical index of the materials could be controlled to meet the requirements for production.
- Standard periodically weighing method and auto zero before each weighing guarantee the accuracy and uniformity of the testing data.
- Touch screen interface is more convenient to operate.
- English Interface
- For film and container test
- One sample for each test, the weighing system is controlled by the electric cylinder which assured the reliability of the test data.
- Standard air velocity to prevent the humidity difference spread which ensures the accuracy of the test
- Wide range and high-precision of automatic temperature and humidity control to support various combinations of non-standard test conditions
- Single test mode: water method.
- High-precise and automatic control system of temperature can be used under different conditions.
- Adjustable air velocity enables the appropriate humidity for testing.
- The data can be stored and output in multi-format (including report in excel ).
- GMP management of user’s four-level authority complies with international standard.
- Equipped with ISP control online and upgrade function.
- Standard RJ45 port makes the test to connect with computer and data transportation.
- Specialized communicating software can display in real-time, analyze and store data.
- 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.
GB/T 1037、GB/T 16928、ISO 2528、ASTM E96、ASTM D1653、TAPPI T464、DIN 53122-1、JIS Z0208、YBB 00092003
| Index |
Parameter |
| Test Range |
0.1 ~ 10,000 g/m²•24h（Standard for film） |
| Test Range |
0.0003318~33.18g/pkg•24h（Standard for container） |
| Number of Specimen |
1 pc |
| Accuracy |
0.01 g/m²•24h |
| Resolution |
0.0001g |
| Temperature Range |
Ambient ~ 55°C（Standard） |
| Temperature Accuracy |
±0.1°C |
| Humidity Range |
10%RH ~ 50%RH（ Relative humidity） |
| Humidity Accuracy |
±1%RH |
| Test Area |
33.18 cm² |
| Sample Thickness |
≤ 3 mm （Customization is available） |
| Sample Size |
Φ72 mm |
| Instrument Dimension |
440 mm (L) × 5000 mm (W) × 550 mm (H) |
| Power Supply |
AC 220V 50Hz |
