ZSY-2 waterproofing membrane impermeable instrument according to GB / T328.10-2007 related design and manufacturing standards for the determination of bitumen and polymer membrane low pressure applications such as: roof grassroots gas barrier layer has a simple operation ... The performance advantages of stability and self-control of the instrument uses hydraulic pressure pump, in the case of the test pressure of not more than 60Kpa available detection unit construction production design research and teaching departments technical parameters:.... 1, the test pressure : 0-60Kpa 2, you can try pieces: 3 (group 1) 3, permeable plate inner diameter: Φ150mm 4, test the water temperature: 20 ℃ ± 5