The standard technique used by the Foam pycnometers is that of gas expansion from a calibrated sample chamber into a reference volume. The solid and closed cell volume of the sample is calculated from the relationship of the calibrated cell volumes and the pressures before and after expansion. The closed cell percentage is calculated from the solid volume and the measured geometric volume of a rectangular or cylindrical sample. Open cell % is calculated by difference (100%-open cell % = closed cell %). Density is calculated from mass (weight)/volume and is reported as grams/cc.
The UltraFoam 1200e and PentaFoam 5200e pynometers conform to ASTM D6226 "Standard Test Method for Open Cell Content of Rigid Cellular Plastics."
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Specifications are based on clean, dry, thermally equilibrated samples and filled sample cells.
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| SAMPLE CELLS: |
ACCURACY |
REPRODUCIBILITY |
| Large, 135 cc: |
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better than ± 0.02% |
better than ± 0.01% |
| Medium, 50 cc: |
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better than ± 0.02% |
better than ± 0.01% |
| Small, 10 cc: |
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better than ± 0.03% |
better than ± 0.015% |
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| SAMPLE SIZE: |
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0.1 to 135 cm3 |
| PRECISION: |
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0.0001 g/cm3 |
| GAS: |
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High purity nitrogen, SF6, helium or other non-corrosive gas |
| PRESSURE: |
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Programmable from 2 to 18 psig, fixed or stepwise |
| PURGE MODES: |
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Flow (adjustable time) pulse (programmable by number), or evacuations.( evacuation available on Ultrafoam only.) |
| CALCULATIONS: |
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Geometric volume (cc) from cube or cylinder dimensions
Open Cell%, Closed Cell% (raw or corrected by
tri-section)
Solid Volume, Solid Density
Compression %, Fracture % versus pressure change
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| CONNECTIVITY: |
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USB printer port, Ethernet (to PC or network) RS232 to electronic balance. PycWeb html interface included. |
| MEMORY: |
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Long term retention of calibrations, run parameters and last run data. Reports can be saved to USB flash / thumb drive. |
| POWER: |
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100 - 240 VAC, 50/60 Hz |
| WEIGHT: |
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21.5 lbs. / 9.75 kg |
| DIMENSIONS: |
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Width: 31.1 cm (12.25")
Depth: 54.0 cm (21.25") |
Height: 22.7 cm (8.9") |
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