Capillary Flow Porometer
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Description
The PMI Capillary Flow Porometer provides fully automated through-pore analysis including bubble point, pore size distribution, mean flow pore size, hydro-head, integrity, and liquid, gas, Frazier, Gurley, and Rayl permeability. PMI's Capillary Flow Porometer is versatile -- it allows the user to test samples under compression, tension, or elevated temperature, thereby simulating operating conditions. User-friendly and nondestructive, the Capillary Flow Porometer is an asset in quality control and R&D environments.
Principles of Operation
A fully wetted sample is placed in the sample chamber and the chamber is sealed. Gas is then allowed to flow into the chamber behind the sample. When the pressure reaches a point that can overcome the capillary action of the fluid within the largest pore, the bubble point has been found. After determination of the bubble point, the pressure is increased and the flow is measured until all pores are empty, and the sample is considered dry. Gas pressure and flow rates through the dry sample are also measured.
Click one of the images below to view a Flash animation demonstrating the principle flow of porometry or a quick animation on how the cap-flow works.
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Applications
Industries worldwide, ranging from the filtration to nonwovens to battery industries, utilize the PMI Capillary Flow Porometer for R&D and quality control. Samples tested include filter media, membranes, paper, and battery separators.
Applicable industries are:
Learn more about the principle of this instrument and how it studies pore structure and characteristics.
See how this instrument helps to design composite filtration media using flow porometry. Also, learn more about what flow porometry can do for your industry.
See a chart of characteristics measurable by different techniques; Extrusion Porometry, Extrusion Porosimetry, and Intrusion Porosimetry.
For more information about the applications please see our other technical papers.
Features
- Allows testing of sample under tension, compression, or elevated temperature to simulate actual operating conditions
- Determines gas permeability of nearly impermeable samples (microflow permeability)
- Windows-based software handles all control, measurement, data collection, and report generation; complete manual control also possible
- Compatible with Windows 95 or higher
- Real-time graphical test display depicts testing status and results throughout operation
- Nondestructive testing
- Length of test approximately 10 minutes
- Wide range of acceptable sample sizes and types
- Transparent sample chamber for visual confirmation
- Minimal maintenance required
Specifications
For more information see our Capillary Flow Porometer Brochure, Porometers Brochure, and Characterization of Pore Structure Brochure.