Product News: Test & Measuring Instruments

Water Vapor Transmission Tester supports inverted cup weighing.

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Press Release Summary:

June 13, 2014 - Featuring independent, 3-chamber testing with weighing mechanism, Labthink PERME W3/031 Water Vapor Transmission Rate System allows individual testing data for 3 samples to be obtained in one test. Arbitral weighing method allows water vapor transmission rate testing, and humidity and temperature control capability are standard. Along with wind speed regulating function, features include permeability test with optimized sensitivity to data produced in process.

Labthink International,Inc.

200 River's Edge Drive, Medford, MA, 02155, USA

Original Press Release

Labthink Water Vapor Transmission Rate Tester-Further Improvements on Performance of Weighing Method

Press release date: June 12, 2014

Weighing method has long been the basic testing method for water vapor transmission rate testing with the widest applications, which can be subcategorized into desiccant method and water method, etc. The method needs manual operation in its early stage to accomplish the testing; yet, the relevant instruments are low in automation. Since high efficiency and multi-function are the trend for instrumental development, Labthink has, after introducing the first water method water vapor transmission rate tester of the world in 2003, made a series of innovative improvements on weighing method water vapor transmission rate instruments, and introduced Labthink PERME W3/031 Water Vapor Transmission Rate System with strengthened extension capability. Customized demands for desiccant method testing and inverted water method testing, as well as testing demands for special samples can be met.

1.Higher Testing Efficiency
Labthink PERME W3/031 Water Vapor Transmission System. The instrument has perfectly realized independent three-chamber testing with its patent weighing mechanism. Individual testing data for three samples can be obtained in one test. Meanwhile, since samples of the same material would not fluctuate much, the issuing time of testing data would be quite near. Therefore, higher testing efficiency can be realized when the three chambers are testing samples of the same material.

2.Better Testing Accuracy
Weighing method is the arbitral method for water vapor transmission rate testing, whose data accuracy is of vital importance. The structural optimization and most excellent components have guaranteed Labthink PERME W3/031 Water Vapor Transmission Rate System to realize highest testing accuracy in the world. Meanwhile, its humidity and temperature control capability are far superior to requirements of standards. It has better wind speed regulating function and faster calibration means.

3.Supporting Inverted Cup Method
Inverted cup method, a subtype of weighing method, is to clamp the film or sheet sample in the cup, with distilled water on the upper surface and a certain humid environment at the lower surface of the sample. When the distilled water permeates through the sample and into the humid environment, water vapor transmission rate can be obtained by measuring cup weight at intervals.

4.More Powerful Software
Permeability test is more sensitive to data produced in process, which sets high requirements for software performance. Otherwise, data accuracy would be seriously affected. Labthink world leading software for permeability testing, based on its complete functions and convenient operation, can provide complete and rapid whole course monitoring, as well as innovations in authority setting and testing process recording. Meanwhile, language selection and operational help have been improved.

5.Conclusions
Weighing method is widely applied as the basic testing method for water vapor transmission rate. As a result, every technological innovation of weighing method tester would bring great influence to the whole industry. Now, the new patented structure of Labthink weighing method instrument has accomplished a thorough upgrading in testing efficiency, testing accuracy and functional extensions, which make it more outstanding when compared with various kinds of sensor method water vapor transmission rate testing instruments so as to help customers’ purchase objectively and scientifically.

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