Product Introduction
The Digital air permeance tester is a fully automatic multi-function instrument for testing air permeance of paper and paperboard. Through modular design, it conforms to multiple standards and test methods including Schober, Gurley, and Bendtsen methods. Different ranges and test areas can be selected, with automatic reading and calculation of air permeance. Test principle: the instrument automatically adjusts to the set pressure differential, and once stable, automatically reads the gas flow rate. Applicable standards: QB/T 1667-98, GB/T 458-2008, ISO 5636-2:1984, ISO 5636-5:2003, ISO 5636-3:1992.

Key Features
Multi-Standard Modular Design: Modular design compatible with Schober, Gurley, and Bendtsen test methods and more, providing multi-functionality in a single instrument for diverse industries and applications.
Fully Automatic Testing: Automatically adjusts to set pressure differential and reads gas flow once stable. One-touch testing with short test times significantly improves efficiency.
High-Precision Sensors: Imported high-precision flowmeter and pressure sensors ensure high test accuracy and repeatability, guaranteeing accurate and reliable results.
Multiple Adjustable Parameters: Pressure adjustment range 10 Pa-3 kPa adjustable (commonly used: 1 kPa, 1.23 kPa, 1.47 kPa), standard test area 10.0±0.2 cm² (optional 6.42 cm²), accommodating different standard requirements.
Intelligent Result Judgment: Built-in pass/fail judgment function automatically determines result conformity after setting the acceptance range, improving quality inspection automation.
Multi-Unit Display: Supports μm/(Pa·s), ml, ml/min, s/100, and other measurement units. 7-inch touchscreen display with printable test results.

Technical Specifications

FAQ
1. No display / screen off
Power not connected, blown fuse, or loose power cord. Check 220V supply; replace fuse with same rating; plug power cord securely.
2. Touchscreen unresponsive / buttons not working
Touchscreen calibration offset, system lag, or loose interface. Restart instrument; recalibrate touchscreen; check communication cable plugs.
3. "Leakage / poor sealing" error
Paper dust on upper/lower clamps, aged gasket, or sample not clamped properly. Clean clamp table; replace aged gasket; lay sample flat and clamp firmly.
4. Test results too high (air permeance too large)
Clamp leakage, sample has holes/wrinkles, or unstable pressure differential. Perform seal test; replace with intact sample; recalibrate pressure differential.
5. Test results too low (air permeance too small)
Test hole blocked, filter dirty/clogged, or sample clamped too tightly. Clear test hole of paper lint; replace filter; adjust clamping pressure.
6. Poor data repeatability, fluctuating values
Environmental temperature/humidity fluctuation, insufficient sample conditioning, or sensor drift. Control environment at 23°C±1°C, 50% RH; condition samples for 4 hours; periodically calibrate pressure and flow.
7. Clamp not moving / not clamping
Insufficient air pressure (pneumatic type requires 0.4-0.7 MPa), solenoid valve sticking, or air tube detached. Check air supply pressure; clean solenoid valve; plug air tube securely.
8. Test stops mid-way or reports error
Flow sensor fault, line blockage, or program error. Restart instrument; clear lines; restore factory settings or contact after-sales for calibration.

After-Sales Service
Thank you for your inquiry. Shandong Annimet Instrument Co., Ltd., established in 2007, has dedicated nearly two decades to the R&D, production, and sales of quality testing instruments. We regard product quality as the lifeblood of our enterprise and pursue excellence in every product developed. Annimet Instrument will consistently provide the tools for your ideas and creativity. Should you have any questions, please feel free to contact our customer service team.