DFP-100-1 & DMPC-500A
Many applications of porous materials require extremely low gas permeability. Measurement of gas diffusion through such materials is essential for evaluating their performance. Such applications are found in many industries including biotech, healthcare, pharmaceutical, food, packaging, environmental, power sources and chemical industries. Determination of gas flow rates through porous materials is important for evaluating product performance in applications such as filtration, packaging, healthcare, biotechnology, and energy systems. PMI’s Dynamic Moisture Permeation Analyzer measures water vapor transmission through porous materials such as textiles, leather, synthetic materials, membranes, nonwovens, and fabrics used in numerous high technology components and consumer products manufactured by a variety of industries. The instrument measures vapor transmission rates over a wide range of humidity, temperature, and pressure conditions under gradients of humidity, temperature, and pressure encountered in application environments.
Specifications (Gas Diffusion Permeameter):
| Permeability Range |
1 to 10 Darcys |
| Sample Size |
1.75 inches – 2.5 inches diameter |
| Pressure Range |
100 psi maximum differential pressure |
| Pressurizing Gas mixture |
multiple non-corrosive gas |
| Vacuum Pumping System |
Vacuum capability up to 0.002 Torr |
| Stock Tank |
Built‑in low‑pressure reservoir; Sample Cell Size: 50–100 cc |
| Weight |
500 lbs (specific to machine) |
| Power Requirements |
220 VAC, 50/60 Hz (Others available) |
| Pressure Transducer Range |
High Pressure Side: 0–100 psi
Low Pressure Side: 0–10 Torr
Accuracy (both sides): ±0.15% of reading
Resolution: 1 part in 60,000 |
Specifications (Dynamic Moisture Permeation Analyzer):
| Humidity (φ) Measurement |
Range: 5 – 95%
Accuracy: ±2% RH |
| Differential Pressure Transducers |
Range: 10 torr (10 mm Hg)
Accuracy: ±0.015% |
| Temperature |
Range: 10–40 °C
Accuracy: ±0.4 °C (low RH) to
±0.8 °C (high RH) at 0 °C
Control: ± 2% |
| Mass Flow Transducers |
Range: 8 L/min
Accuracy: ±1% |
| Humidity (φ) Control |
Range: 5 – 95%
Accuracy: ± 1.5% (φ = 0.5)
± 5% (high & low φ) |
| Mass Flow Meter |
Range: 8000 cc/min
Accuracy: ±1% |
| Mass Flow Controller |
Range: 2000 cc/min
Accuracy: ±1% |
