Gas Diffusion Analyzer

The PMI Gas Diffusion Analyzer is designed to determine the transport properties of various gases through sheet-like materials under a wide range of static and dynamic conditions.

Gas Diffusion Analyzer

Overview

The PMI Gas Diffusion Analyzer is designed to determine the transport properties of various gases through sheet-like materials under a wide range of static and dynamic conditions. These measurements can be used to simulate real-world applications. The instrument is equipped with a mass spectrometer to detect extremely low transfer rates, enabling testing under very small gradients of concentration, pressure, or temperature. It is ideal for delicate sheet-like materials such as fabrics, films, laminates, paper, plastics, and boards with thicknesses up to 1.25 inches. Its versatility and ease of use make it an excellent research tool for characterizing dynamic material properties under both standard and non-standard conditions.

  • Versatile and user-friendly software for: Fully automated tests; Manual control of all system components; Data collection, storage, analysis, and reporting; Customized testing parameters
  • Ability to create a wide range of testing conditions, including: Rate/residence time; Static or dynamic pressure gradients; Static or dynamic temperature gradients
  • Applicable for a wide variety of sheet-like materials
  • High measurement speed, stability, and resolution
  • Interchangeability of system components
  • Durable stainless-steel construction

Specifications

Differential Pressure Measurement Range±1335 Pa (±5 Pa accuracy)
Lowest Detectable Concentration0.1 ppm (±10 ppb accuracy)
Lowest Detectable Partial Pressure1 × 10⁻¹⁴ mbar
Mass Range1–100 amu, 1–200 amu, or 1–300 amu
Maximum Test Gas Flow Rate30 scc/min (±1% accuracy)
Maximum Total Flow Rate530 scc/min (±1% accuracy)
Resolution0.5 to 2.5 amu
Temperature Measurement Range-10 °C to 100 °C (±0.5% accuracy)

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