China Fabric Water Vapor Transmission Tester ULB-T09 - Reliable Supplier & Factory for Moisture-Wicking Textiles
Application
To test the water vapour transmission of various fabric (moisture permeable fabric included) and non-woven fabric such as bat wool, space cotton, sportswear fabric etc.
Feature
Key Specification
| Model | ULB-T09-1 | ULB-T09-2 |
| Water vapour permeability cups | 1 layer, 8pcs | 2 layers, 8pcs/layer |
| Standards | GB/T12704, GB/T21655, ASTM E90, ASTM E96, JIS L1099, BS 7209 | |
| Test chamber temperature | RT~50℃ | |
| Resolution | 0.1℃ | |
| Accuracy of temperature | ±0.5℃ | |
| Weighing function | No | |
| Testing method | Upright cup method | |
| Humidity of testing chamber | 40%RH~95%RH | |
| Resolution | 0.1%RH | |
| Accuracy of humidity | ±1%RH | |
| Testing time | 0.1~999.9h (can be changed into “min”) | |
| Speed of circulating air | 0.1~0.8m/s | |
| Breathable area |
2826mm² (∮60mm GB12704) or 4534mm² (∮76mm ASTM E96) Or 5408mm² (∮83mm BS 7209) or 2826mm² (∮60mm JIS L1099) |
|
| Dimension | 740×670×1185mm | 1050×635×1170mm |
| Weight | 200kg | 250kg |
| Power supply | AC 220V 50/60HZ 4KW | AC 220V 50/60HZ 4KW |
Accessories
| Standard accessories | 1 set | Soak Cup (GB Standard, and can be changed into other standards according to customer’s requirements) |
| 1 pc | Power Line | |
| Optional accessories | 1 set | Soak Cup (ASTM standard) |
| 1 set | Soak Cup (BS standard) |
Frequently Asked Questions
What materials can be tested using the Fabric Water-vapour Transmission Tester?
This tester is designed to measure the water vapour permeability of various textiles, including moisture-permeable fabrics, non-woven fabrics, bat wool, space cotton, and sportswear fabrics.
Which international standards does the ULB-T09 series comply with?
The tester complies with major international standards, including GB/T12704, GB/T21655, ASTM E90, ASTM E96, JIS L1099, and BS 7209, making it highly versatile for global quality assurance.
What is the advantage of a rotary specimen holder over a fixed one?
The rotary specimen holder ensures that all samples are exposed to uniform airflow and environmental conditions inside the chamber, leading to more consistent and reliable test results compared to fixed holders.
How does the device maintain precise temperature and humidity control?
The system utilizes a PID control algorithm to minimize environmental fluctuations and prevent overshoot. Additionally, it features a built-in calibration function to compensate for sensor bias caused by long-term operation.
Can test parameters and calculations be managed directly on the machine?
Yes, operators can input parameters directly via the integrated color touchscreen. The system automatically calculates critical values such as Water Vapour Transmission (WVT), Water Vapour Permeability (WVP), and PV values.
Is there a software interface for data analysis and reporting?
Yes, the tester is equipped with upper computer software that records real-time temperature and humidity curves, facilitates data calculation, and enables the generation and printing of comprehensive test reports.

