No.572 Water Vapor Permeability Measurement Device (Differential Pressure Method)
It is a device for measuring the water vapor permeability and water vapor transmission rate (water vapor barrier properties) of materials such as plastic films using the differential pressure method.
● Measures the water vapor permeability and water vapor transmission coefficient of plastic films and other materials. ● The measurement section accommodates two sizes of test specimens (measurement section diameters ∅30mm and ∅70mm). ● Modular design of the measurement section allows for additional expansions. ● Utilizes a high-precision vacuum pressure gauge with a reading accuracy of 0.25%. ● Email functionality enables receipt of messages in case of errors or at the end of tests.
basic information
■Number of test specimens: 1 or 3 ■Measurement range: 20–85℃, 80–90%RH (depending on combination) ■Temperature control method: Water circulation (using a constant temperature circulation bath) ■Test specimen dimensions: ・50×50mm (measurement area diameter Ø30mm, transmission area 707mm²) ・90×90mm (measurement area diameter Ø70mm, transmission area 3848mm²) *Select transmission area based on water vapor permeability ■Water vapor permeability measurement range: ・Type A: 0.001–1.000 [g/(m²・24h)] ・Type B: 0.01–100.00 [g/(m²・24h)] *Vacuum pressure gauge accuracy 0.25% of reading ■Supply gas: 0.5MPa ■Medium for water vapor: Water (Type A1 or higher as specified in JIS K 0557) ■Measurement items: Water vapor permeability ([g/(m²・24h)]) Water vapor permeability coefficient [g・mm/(m²・24h)] ■Data processing device: PC, dedicated software (standard included) ■Reference standards: JIS K 7129-5, ISO 15106-5 For other specifications, please refer to the catalog.
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Model number/Brand name
Catalog No. 572
Applications/Examples of results
Measurement of water vapor permeability and water vapor transmission rate (water vapor barrier properties) of plastic films and the like.
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Toyo Seiki Seisakusho Co., Ltd. is a comprehensive manufacturer of various material testing machines and environmental testing equipment targeting fields such as plastics, rubber, paints, paper, and textiles. Since its founding in 1934, we have been dedicated to "testing machines" and have supported our customers' research and development and quality control across various fields. We will continue to refine our technical capabilities and respond to our customers' needs. 【Product Development Timeline】 1955: Thermoplastic Resin Fluidity Tester 'Melt Indexer' 1960: Universal Material Testing Machine 'Strograph' 1963: Curing Tester 'Oscillating Disk Rheometer (ODR)' 1970: Mixing and Extrusion Testing Equipment 'Lab Plastmill' 1982: Capillary Rheometer 'Capillograph'