Function and Use

The SN-13H water vapor transmission rate tester system is based on the test principle of infrared moisture sensor, and is designed and manufactured in accordance with ASTM F1249, ISO 15106-2 and other standards, providing high-precision and high-efficiency water vapor transmission rate testing for high and medium gas barrier materials. It is suitable for water vapor transmission rate testing of various plastic films, paper-plastic composite films, co-extruded films, aluminized films, aluminum foil composite films, glass fiber aluminum foil paper composite films and other film materials in the fields of food, medicine, medical equipment, daily chemicals, photovoltaics, electronics, etc., water vapor transmission rate testing of sheet materials such as PP sheets, PVC sheets, PVDC sheets, metal foil sheets, rubber sheets, silicon sheets and water vapor transmission performance testing of related materials.

Working Principle

Clamp the pre-treated sample between the test chambers, and nitrogen with stable relative humidity flows on one side of the film, and dry nitrogen flows on the other side of the film; due to the humidity difference, water vapor will diffuse from the high humidity side through the film to the low humidity side; on the low humidity side, the permeated water vapor is carried to the infrared moisture sensor by the flowing dry nitrogen, and different water vapor concentrations produce different light signals. The concentration value is obtained by analysis and calculation, and then the water vapor permeability of the sample is calculated.

Compliant standards

GB/T 26253-2010, YBB 00092003-2015, ASTM 1249-2013, BS EN ISO 15106-2-2005, JIS K7129-2008

Instrument features

1. The infrared moisture sensor equipped with Guangzhou Sonuo patented technology can obtain a lower test limit. Designed in accordance with ASTM F1249 standard. Ultra-long service life, non-consumable. With over-limit alarm and automatic protection function.

2. Accurate data: 360° airflow circulation constant temperature technology is adopted, and the temperature stability is better. Equipped with high-precision temperature and humidity sensors, real-time monitoring and recording of temperature and humidity changes. During the test, the flow, temperature and relative humidity are automatically controlled with higher accuracy. A higher test repeatability of 0.0001 g/(m2·day) can be achieved.

3. Intelligent control: 10.1-inch touch screen control is adopted, which is more convenient to control. Fully automatic test. New test chamber, one-button automatic entry and exit, sound and light reminder.

4. Safe and reliable: Embedded with Guangzhou Shounuo's unique high-end electronic system, it eliminates system failures caused by computer viruses, etc., and ensures operational reliability and data storage security. Safe control-equipped with various intelligent sensors such as optics, sound and light alarms and other intelligent prompts to ensure the safety of control. Safe performance-the instruments are all made of world-renowned brand components, stable and reliable.

5. Powerful functions: Professional test mode provides flexible and rich control functions to meet scientific research needs. Provide water vapor transmission rate curve, temperature curve, humidity curve. Ultra-wide test range, meeting the barrier test of various materials (customized). Ultra-wide temperature range, meeting the barrier test at different temperatures (customized).

6. Independent three-chamber design, high test efficiency:

With three chambers, it supports the test of three identical or different samples. The test data are independent of each other and meet the test requirements of three standard parallel samples.

Technical parameters

Test range: 0.005g-100g/(m2·day) (standard area 50.2cm2)

Resolution: 0.0001g/(m2·day) Repeatability: 0.005g/(m2·day) or 2%, whichever is greater

Temperature range: 5-55℃ Temperature control accuracy: ±0.2℃

Humidity range: 5-90%RH, 100%RH Humidity control accuracy: ±2%RH

Number of samples: 3 Carrier gas: 99.9999% nitrogen

Carrier gas flow rate: 5-100ml/min Power supply: AC 220V, 50HZ

Standard configuration

Standard configuration: power cord, communication cable, sample cutter, sealing grease.

Gas source is self-provided, computer.