Paper Air Permeance Tester

     Cement bag paper, paper bag paper, cable paper, copy paper, industrial filter paper, etc. all need to determine the degree of air permeability. This tester is designed and manufactured for the above-mentioned various papers. The tester consists of a container on a fixed support, a pattern holder and a pressure gauge. The upper part of the container is equipped with a vent valve and a water filling valve with a funnel. Distilled water is injected into the container from the water filling valve with a funnel. The bottom of the container is equipped with overflow valve and regulating valve to control the flow of water. The pattern clamp ring is fixed on the bracket, and the pattern clamp ring and the air box have a hole with an area of ​​10cm². The air box is located under the paper clip ring. There are two connectors on the air box. The rubber hose is connected to the exhaust pipe and the pressure gauge respectively. The base of the instrument is the basis of the entire instrument, and a level is installed on it. Adjustment bolts to adjust the horizontal position of the instrument.
    The working principle: the average air flow rate per unit area of ​​paper sheet per unit time and pressure difference under specified conditions. The instrument is suitable for paper with air permeability between 1 × 10-2 and 1 × 102 µm / (Pa · s). It is not suitable for paper with large surface roughness.
    Operating conditions: Room temperature (20 ± 10) ℃ air clean environment, placed on a solid and stable workbench. 

Measure range: （1～1000）ml/min or 0~17um/(Pa.s)
Mearure surface: (10±0.02)cm2 
Test area pressure difference: (1±0.01)kPa
Accuracy: <100ml volume error: 1ml; >100ml volume error 5ml
Clamp ring inner diameter: ：35.68±0.05 mm
Coaxiality of the center holes of the upper and lower clamp rings: ﹤ 0.05 mm.   

NO

GB/T 458 

NO