GBPI N600E – Battery Separator Air Permeability Tester (Gurley Method)
- Automated battery separator air permeability tester utilizing the standardized Gurley pneumatic timing principle
- Full testing compliance with JIS P8117, ISO 5636-5, GB/T 36363-2018, and ASTM D726
- Wide Gurley air resistance measurement range from 60 to 12,000 s/100 mL with resolution of 0.1 s/100 mL
- Precision pressure regulation across 0 to 5 kPa with ultra-high resolution of 0.001 kPa
- Standard circular test orifice of 6.45 cm2 with automated pneumatic specimen clamping
- Directly quantifies sub-micron pore tortuosity and ionic conductivity correlation for lithium-ion battery separators
- Color touchscreen interface with real-time pressure curves, automated data calculations, and USB export
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The GBPI N600E is an advanced, high-precision battery separator air permeability tester engineered to determine the Gurley air resistance, MacMullin number correlation, and microporous gas transit rate of lithium-ion battery separators, porous polymer films, and high-performance energy storage membranes. Built in strict conformity with premier international testing standards including ISO 5636-5 (paper and board — determination of air permeance — Gurley method), JIS P8117, and Chinese standard GB/T 36363-2018 for lithium-ion battery polyolefin separator membranes, this automated instrument delivers rapid, highly repeatable quality verification.
In modern lithium-ion and sodium-ion battery cells, microporous separators (such as wet-process and dry-process polyethylene and polypropylene membranes) must prevent physical short-circuiting between the anode and cathode while allowing unimpeded transport of solvated lithium ions. The Gurley value — the time in seconds required for 100 mL of air to pass through a specific membrane cross-sectional area under a constant pressure differential — is the fundamental industrial metric directly proportional to separator pore size, porosity percentage, and internal pore tortuosity. Operating as a computerized battery separator air permeability tester, the GBPI N600E replaces traditional messy oil-weighted manual Gurley densometers with high-precision electronic mass flow control and micro-differential pressure sensing.
Automated Gurley Quantification & Micro-Pressure Regulation
The instrument features a closed-loop pneumatic circuit that establishes and maintains a steady test pressure across the 6.45 cm² circular testing aperture. Electronic optical flow sensors track gas passage with millisecond accuracy, recording the precise transit duration for 100 mL of air across an extensive range of 60 to 12,000 seconds per 100 mL with 0.1-second resolution.
Pneumatic Clamping & Zero Edge Leakage
To ensure absolute data validity on thin polymer membranes (often ranging from 5 to 25 μm in thickness), the N600E employs an automated pneumatic clamping fixture with polished planar sealing rings that eliminate edge boundary air bypass and prevent delicate film stretching.
Equipped with an intuitive touchscreen terminal, automatic baseline calibration, and robust internal memory, the N600E is essential for lithium battery cell manufacturers, separator extruders, and electrochemical research centers.
GBPI N600E Battery Separator Air Permeability Tester – Technical Specifications
| Technical Parameter | Specification Details |
|---|---|
| Test Principle | Automated Gurley Method (Air transit duration per 100 mL under constant differential pressure) |
| Applicable Standards | JIS P8117, ISO 5636-5, GB/T 36363-2018, ASTM D726, TAPPI T460 |
| Air Permeability Measurement Range | 60 ~ 12,000 s/100 mL (Gurley second range) |
| Timing Measurement Resolution | 0.1 s/100 mL (Electronic optical timing sensor) |
| Differential Pressure Range | 0 ~ 5 kPa (Standard calibrated Gurley pressure: 1.215 kPa / 1.22 kPa) |
| Pressure Resolution & Accuracy | Resolution: 0.001 kPa; Accuracy: ±0.25% F.S. |
| Effective Test Aperture Area | 6.45 cm² (Standard circular Gurley orifice: Φ28.6 mm) |
| Specimen Dimensions | > 50 mm × 50 mm (Accommodates separator film rolls and cut sheets) |
| Specimen Clamping Mechanism | Pneumatic automatic clamping cylinder with flat precision sealing faces |
| Overall Dimensions | 450 mm (L) × 400 mm (W) × 300 mm (H) |
| Instrument Net Weight | Approximately 22 kg |
| Power Supply & Power Rating | 110 ~ 250 VAC, 50/60 Hz; Total Power: 100 W |
Key Features & Engineering Highlights
- Standardized Gurley Principle: Built specifically to comply with JIS P8117 and ISO 5636-5 for lithium-ion battery separator qualification.
- Broad Dynamic Gurley Range: Accurately measures air transit times from 60 seconds up to 12,000 seconds per 100 mL volume.
- Electronic Micro-Differential Regulation: Maintains stable 1.215 kPa differential pressure without mechanical oil weights or mercury columns.
- Automated Pneumatic Clamping: Ensures uniform peripheral sealing force, preventing edge air bypass on ultra-thin 9 ~ 20 μm separator films.
- High Measurement Resolution: Digital timing resolution of 0.1 s/100 mL and pressure resolution down to 0.001 kPa.
- Embedded Touchscreen Terminal: Real-time display of pressure curves, automatic Gurley second calculation, and statistical averaging.
- Integrated USB Data Export: Comprehensive historical test logging for statistical process control (SPC) and battery factory MES integration.
Standard Package & Accessories
| Item Description | Quantity |
|---|---|
| GBPI N600E Battery Separator Air Permeability Tester Mainframe | 1 Unit |
| Standard Circular Gurley Clamping Orifice Fixture (6.45 cm²) | 1 Set |
| Precision Pneumatic Air Regulator & Gas Connection Tubing | 1 Set |
| Pneumatic Foot Switch for Hands-Free Specimen Clamping | 1 Pc |
| Power Supply Cord & Safety Ground Lead | 1 Set |
| Operating Manual & Factory Calibration Certificate | 1 Set |
Target Industry Applications
Lithium-Ion Battery Separators
Testing Gurley air permeability of wet-process and dry-process polyethylene (PE) and polypropylene (PP) microporous separators.
Ceramic-Coated Separators (CCS)
Verifying that inorganic alumina/bohemite ceramic coatings do not excessively clog separator micro-pores or impede gas transit.
Solid-State & Sodium Battery Membranes
Characterizing porous polymer scaffolds and composite electrolyte matrices used in next-generation solid-state and sodium-ion batteries.
Specialty Breathable Micro-Films
Evaluating porosity and airflow resistance in high-barrier medical packaging membranes and electronic acoustic venting films.