YY461B Gerley Automatic Air Permeability Tester
Short Description:
Instrument Description:
The YY461B Gerley Permeability Tester adopts advanced technology and is combined with the most commonly used test methods to measure the air permeability of paper, paperboard, or other sheet-like materials. It is a fully automatic instrument controlled by a programmable microcomputer. Its test methods meet the requirements of various standards such as Gurley, Bendtsen, and Sheffield, making it an advanced instrument for testing paper air permeability in China’s papermaking, packaging, and cigarette industries, with performance reaching international standards.
Working Principle:
Designed based on the positive pressure method, the preprocessed sample is placed between the upper and lower measuring surfaces to form a constant pressure difference on both sides of the sample. Driven by the pressure difference, gas flows from the high-pressure side through the sample to the low-pressure side. The air permeability of the sample is calculated according to the area of the sample, the pressure difference, and the gas flow rate.
Executive Standards:
SJ_T 10171-2016: General Test Methods for Basic Performance of Alkaline Battery Separators (Air Permeability Section)
GB/T 458-2008: Determination of Air Permeability of Paper and Paperboard
GB/T 36363-2018 
olyolefin Separators for Lithium-Ion Batteries
ISO 5636/2, QB/T 1667, GB/T 22819, GB/T 23227, ISO 2965, YC/T 172, GB/T 12655
Instrument Features:
|
Test Method |
Calculation Formula |
Test Parameter |
Corresponding Standards |
| Gurley Method | 135.5 /S | Test Volume: 107 ml | ISO 5636/5, TAPPI T 46 |
| Gurley Air Resistance | 127 /S | Test Volume: 100 ml | SCAN-P 19 |
| Bendtsen Air Permeability | 10×S×1470/166.7 | Test Area: 10 cm² | SCAN-P60, SCAN-P 8, ISO 5636/3, DIN 53 120 |
| Bendtsen Air Permeability | 5×S×1470/166.7 | Test Area: 5 cm² | |
| Sheffield Air Permeability | 10(3.70975-log(135.5/S))Vf.134) | - | TAPPI T 54, ISO 5636-4 |
Instrument Applications:
|
Application Category |
Material Category |
Applicable Scope |
|
Basic Application |
Insulating Paper |
Testing of electrical insulating paperboard and electrical insulation cardboard |
|
Core Paper |
Testing of paper tube paper, core paper, and kraft paper |
|
|
Paper |
Testing of various papers, specialty paper, paperboard, composite paperboard, kraft linerboard, white cardboard, white board paper, etc. |
|
|
Filter Materials |
Testing of filter paper, filter membranes, and filter cloths |
|
|
Packaging Boxes |
Testing of color boxes, cigarette boxes, and packaging boxes |
|
|
Extended Application |
Separators |
Testing of air permeability of battery separators |
Technical Parameters:
|
Parameter |
Specification |
|
Test Air Pressure |
20.0 kPa |
|
Measuring Range |
0.003-100 μm/Pa·sApproximately equivalent to 2-40,000 s (Gurly)0.3-8800 ml/min (Bendtsen)0.2-1400 CU (Sheffield) |
|
Unit Selection |
μm/Pa·s, s (Gurly), ml/min (Bendtsen), CU (Sheffield) |
|
Reading Display |
0.001 μm/Pa·s |
|
Compressed Air for Tester |
Minimum 400 kPa |
|
Air Consumption of Tester |
0.2 m³/h (NTP) |
|
Sample Thickness |
≤5 mm |
|
AC Power Supply |
100-240 V, 50-60 Hz |
|
Power Consumption |
55 W |
|
Computer Interface |
RS-232 asynchronous serial port |
|
Dimension |
300 × 400 × 400 mm |
|
Weight |
18 kg |
