STW-8-080-F

Function

Water vapor transmission performance test - water vapor transmission capacity, transmission rate, and transmission coefficient.

Films, sheets, boards, containers, and building materials made of plastic, fabric, leather, metal, and other materials.

Working principle

Balance weighing: weight reduction method, can be placed in both upright and inverted cups.

Place pure water in the sample cup; Seal the sample cup with the sample and place it inside the testing box; Control the temperature, humidity, and wind speed of the test box; The humidity difference inside and outside the sample cup drives water vapor to penetrate the sample, resulting in a decrease in the mass of the sample cup; Regularly weigh the sample cup and calculate performance parameters such as the water vapor transmission rate of the sample.

Compliant with standards

Chinese Pharmacopoeia (Part IV) - Determination of Water Vapor Transmittance GB/T 1037、YBB 00092003 ASTM E96、ISO 2528、GB/T 17146 GB/T 12704 GB 19082 GB/T 21332、QB/T 2414、TPPI T464、ASTM D1653、YY0471.2、DIN 53122。

FEATURES

• Strictly comply with domestic and international standards;
• Tested for 48 hours, with a test error of less than 0.05 g/m²•24h， And it decays to zero with the testing time.
• Patent moisture permeable cup: The sample has no plastic on the outside (to avoid water absorption), anti slip design (no distortion of the sample), and reliable sealing.
• Temperature and humidity: automatic humidity control; Semiconductor cold and hot bidirectional automatic temperature control.
• Balance protection: patented insulation and moisture prevention technology ensures the stability and lifespan of the balance.
• Uniform wind speed: Double plane spiral circulation wind with uniform wind speed, humidity, and temperature fields.
• Fully automatic: One click testing, automatically ending the experiment and saving data; Desiccant replacement free: Desiccant replacement free (over one year).
• Working environment: Indoor, no need for constant temperature and humidity environment (reducing usage costs), test data is not affected by environmental temperature and humidity.
• Fault self check: Power on self check to avoid testing under fault conditions.
• Data recording: graphical, full process, all element recording, no loss of power-off data.
• Data Security: The optional "GMP Computerized System" software module has functions such as user management, permission management, and data audit tracking.

TECHNICAL INDEX

Standard configurationTest host, computer, air dryer, professional testing software, breathable cup (number of workstations), calibration weight, sampler.

Optional configurationSoftware module of GMP computerized system, wax sealed sample cup.

Bring your ownCompressed air.