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Principle>OAmTextile Testing Instruments, Testing Equipment Manufacturer
A wetting liquid is allowed to spontaneously fill the pores in the sample and a nonreacting gas is allowed to displace liquid from the pores. The gas pressure and flow rates through wet and dry samples are accurately measured. The gas pressure required to remove liquid from the pores and cause gas to flow is given byOAmTextile Testing Instruments, Testing Equipment Manufacturer
D = 4 gamma; cos theta; / pOAmTextile Testing Instruments, Testing Equipment Manufacturer
where D is the pore diameter, gamma; is the surface tension of liquid, theta; is the contact angle of liquid, and p is the differential gas pressure. From measured gas pressure and flow rates, the pore throat diameters, pore size distribution, and gas permeability are calculated.OAmTextile Testing Instruments, Testing Equipment Manufacturer
OAmTextile Testing Instruments, Testing Equipment Manufacturer
Application>OAmTextile Testing Instruments, Testing Equipment Manufacturer
The unique features of the instrument, especially its ability to generate highly reproducible data quickly, make it highly suitable for quality control and process control operations. The instrument is used in these applications in a wide variety of industries.OAmTextile Testing Instruments, Testing Equipment Manufacturer
OAmTextile Testing Instruments, Testing Equipment Manufacturer
Capabilities>OAmTextile Testing Instruments, Testing Equipment Manufacturer
● Diameter of the most constricted part of a through pore (pore throat)OAmTextile Testing Instruments, Testing Equipment Manufacturer
● Mean flow pore diameter (50% of flow is through pores smaller than the mean flow pore)OAmTextile Testing Instruments, Testing Equipment Manufacturer
● Bubble Point (the largest through pore throat diameter)OAmTextile Testing Instruments, Testing Equipment Manufacturer
● Pore diameter rangeOAmTextile Testing Instruments, Testing Equipment Manufacturer
● Pore distribution:OAmTextile Testing Instruments, Testing Equipment Manufacturer
middot; f = -d(fw/fd) x 100 / dDOAmTextile Testing Instruments, Testing Equipment Manufacturer
middot; fw = flow rate through wet sampleOAmTextile Testing Instruments, Testing Equipment Manufacturer
middot; fd = flow rate through dry sampleOAmTextile Testing Instruments, Testing Equipment Manufacturer
● Gas permeability in many desired units including Frazier, Gurley, Rayl amp; DarcyOAmTextile Testing Instruments, Testing Equipment Manufacturer
OAmTextile Testing Instruments, Testing Equipment Manufacturer
Features>OAmTextile Testing Instruments, Testing Equipment Manufacturer
◆ Fully Automated and User-FriendlyOAmTextile Testing Instruments, Testing Equipment Manufacturer
◆ Only a few minutes per testOAmTextile Testing Instruments, Testing Equipment Manufacturer
◆ Preset test parametersOAmTextile Testing Instruments, Testing Equipment Manufacturer
◆ Very little operator time and involvementOAmTextile Testing Instruments, Testing Equipment Manufacturer
◆ Ideal for quick generation of highly reproducible dataOAmTextile Testing Instruments, Testing Equipment Manufacturer
◆ Variety of sample shapes and sizesOAmTextile Testing Instruments, Testing Equipment Manufacturer
◆ Very little maintenanceOAmTextile Testing Instruments, Testing Equipment Manufacturer
◆ Real-time graphical displayOAmTextile Testing Instruments, Testing Equipment Manufacturer
◆ Windows-based software for all control, measurement, data collection, data reduction, and report preparationOAmTextile Testing Instruments, Testing Equipment Manufacturer
OAmTextile Testing Instruments, Testing Equipment Manufacturer
Technical Parameters>OAmTextile Testing Instruments, Testing Equipment Manufacturer
Items |
Parameters |
Pressure Accuracy |
0.15% of reading |
Test Pressure |
100 psi instrument version (700kPa instrument versions) |
Pressure amp; Flow Resolution |
1/60,000 of full scale (1 part in 60,000) |
Maximum Pore Size Detectable |
80 micro;m |
Minimum Pore Size Detectable |
Varies with intrusion liquid |
Flow Rates |
Up to 200 SLPM (liters per minute) |
Sample Sizes: |
Standard: 0.1 inch diameter (up to 1.5quot; thick) |
Sample Geometry |
Sheets, Rods, Tubes, Hollow Fibers, Cartridges, Powders |
Pore Size Range |
80 micro;m to 0.06 micro;m |
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