Control tester TQD-G1A

air flowpermeabilitycompressed air

Overview

The TQD-G1A Air Permeability Tester measures air permeability and air resistance of automotive interior materials and a wide range of porous materials to support quality control and application requirements. Typical materials include polyurethane foam, PVC, leather, textiles, nonwovens, separation membranes, sponge, carpet, paper and leather.

Product Features

• Two selectable measurement methods: constant pressure difference (Method B) and constant flow (Method A).
• High-precision electronic air flow and air pressure sensors for reliable test data.
• Built-in imported maintenance-free vacuum pump system for stable airflow.
• Professional sample fixture with pneumatic clamping for consistent clamping force and safe, time-saving operation.
• 7" color industrial touch screen and desktop-style interface for intuitive operation.
• Built-in calendar, multi-language switching and multi-level user authority management.
• Optional needle micro-printer for immediate output and long-term storage of results.
• Optional RS232 interface for system-to-computer data transmission.

Test Principle

• Method A: Establish a constant flow vertically through the sample, measure the resulting pressure difference and calculate air flow resistance and related parameters.
• Method B: Maintain a constant pressure difference across the sample and measure the air flow through a defined area over time to calculate air permeability and related parameters.

Standards

• ISO 9237; ISO 4638; ISO 5636; GB/T 10655; GB/T 5453; GB/T 4689.22; GB/T 13764; ASTM D737; TAPPI T460; JIS P8117.

Applications

• Basic Applications
  
  • Auto interior materials: measurement of air permeability and air resistance for polyurethane, PVC, leather, textiles and nonwovens.
  • Polymer porous elastic materials: permeability testing of sponges and similar materials.
  • Textiles: permeability testing for woven and non-woven fabrics.
  • Leatherwear: air permeability testing for leather materials.
• Extended Applications
  
  • Paper: permeability testing for tissue, toilet paper and other paper products.
  • Masks: ventilation resistance and pressure-difference testing for various mask types.

Technical Specifications

• Test Parameters (TQD-G1A): Differential pressure range 0–1000 Pa; differential pressure resolution 0.1 Pa; differential pressure accuracy 0.25%; flow measurement range 0–30 L/min; flow resolution 0.1 L/min; flow accuracy 2%.
• Technical Details: Number of test cells: 1; specimen size: 2" x 2" (5 cm × 5 cm); specimen thickness: ≤40 mil (≈1 mm); test area: 20 cm² (other sizes customizable); gas: clean compressed air (air source provided by user); recommended air source pressure: 72.5 PSI / 500 kPa (note: inlet may require ≥79.7 PSI / 550 kPa, recommended outlet flow >120 L/min); interface size: Φ8 mm polyurethane tube; dimensions: 12" H × 18" W × 20" D (30 cm × 46 cm × 52 cm); power supply: 120 VAC ±10% 60 Hz or 220 VAC ±10% 50 Hz; net weight: 55 lbs (≈25 kg).
• Product Configuration: Standard: mainframe, one set of fixtures and Φ8 mm polyurethane tube. Optional: computer software, air compressor. Air source to be supplied by the user.