Water vapor permeability measurement device (differential pressure method)
Catalog No. 572
It is a device that measures 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 materials such as plastic films. ● 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 allows for receiving messages in case of errors or at the end of tests.
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basic information
■Number of test specimens: 1 or 3 ■Measurement range: 20 to 85°C, 80 to 90% RH (depending on combination) ■Temperature control method: Water circulation (using a constant temperature circulation bath) ■Test specimen dimensions: ・50×50mm (measuring area diameter Ø30mm, transmission area 707mm²) ・90×90mm (measuring area diameter Ø70mm, transmission area 3848mm²) *Select transmission area based on water vapor permeability ■Water vapor permeability measurement range: ・Type A: 0.001 to 1.000 [g/(m²・24h)] ・Type B: 0.01 to 100.00 [g/(m²・24h)] *Vacuum 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 transmission 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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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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Company information
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 establishment in 1934, we have been dedicated to "testing machines" and have supported our customers' research and development and quality control in various fields. We will continue to refine our technological capabilities and respond to our customers' needs. [Product Development Timeline] 1955: Thermoplastic Resin Fluidity Testing Machine 'Melt Indexer' 1960: Universal Material Testing Machine 'Strograph' 1963: Curing Testing Machine 'Oscillating Disk Rheometer (ODR)' 1970: Mixing and Extrusion Testing Equipment 'Laboplast Mill' 1982: Capillary Rheometer 'Capillograph'