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BELPYCNO L is a fully automated gas pycnometer for the determination of volume and skeleton density of powders, granulates, porous materials, mixtures, pastes, and liquids. The combination of an internal temperature control and an absolute pressure transducer compensates any influences from ambient temperature and pressure fluctuations.
The gas pycnometer replaces the classical method of liquid displacement, utilizing a probing gas such as Helium which can reach even the smallest pores with less than one nanometer in diameter. Thus, the density of powders and porous materials can be determined exactly.
The gas pycnometer works as a standalone instrument or by connecting it to a computer. The included software is easy to use and offers full control and a wide array of functions, from programming the computer to the report and storage of analytical data and results. Additionally, the computed volume and density are displayed in-situ for each measurement step.
The BELPYCNO L gas pycnometer is equipped with up to 3 reference chamber volumes (20, 40 and 60 cm3) in order to give the best performance in combination with the chosen sample chamber (ca. 4, 20, 40, 60, 100 and 150 cm3). Independent of ambient temperature and pressure variations, the pycnometer allows density measurements which are not limited by time consuming calibration procedures.
Once calibrated the gas pycnometer carries out the analysis without any concerns. No contamination risks due to gas loading from reference chamber (high pressure) into sample chamber (low pressure), supported by programmable discharge restriction and easy use of paper filters. Variable loading pressure permits the analysis of foams and compressible samples.
The gas pycnometer BELPYCNO L is suitable for the density measurement of a wide range of applications: powders, wood, building materials, catalysts, liquids, and pastes, activated carbon, food, pharmaceuticals, ... and many others!
| Reference chamber volumes | Approx. 20 cm³, 40 cm³ and 60 cm³ |
| Sample chamber volumes | Approx. 4 cm³, 20 cm³, 40 cm³, 60 cm³, 100 cm³ and 150 cm³ |
| Probe gas | Helium (other inert gases possible) |
| Control | Integrated micro processor |
| Keyboard | Alphanumeric foil |
| Display | 4-line 40 characters LCD-display with back light |
| Pre-treatment | Flow, programmable purge cycles optional with vacuum preparation |
| Temperature | 14° C to 40° C (optional 60° C with external oven) resolution: ± 0.01° C |
| Pressure transducer | 0.001 kPa displayed resolution |
| AD-Converter | 19 Bit |
| Accuracy | 0.01 % |
| Reproducibility | 0.01 % |
| Vacuum connector | KF-10 |
| Interfaces | 2 x serial (ext. balance, PC-data transfer) 1x parallel (printer) |
| Sensor (optional) | Humidity |
| CE certified | yes |
The BELPYCNO is an analyzer for quick and reliable measurement of the true density of solid materials and powders using by gas displacement.
The BELPYCNO offers high-resolution pressure measurement, variable cell volumes, greaseless, and one-touch sample cell cap. These features ensure high accuracy of the measurement result and easy operation.
| Measurement principle | Gas displacement method |
| Sample cell volume | 10 cm3, 3.5 cm3, 1 cm3 |
| Measurement accuracy | 0.03% of F.S. +0.03% of reading |
| Repeatability | 0.02% of F.S. |
| Pretreatment | Gas purge, flow, vacuum (option) |
| Pretreatment pressure | 0-145kPa (Gauge) |
| Applicable gas | He, N2, inert gas |
| Measurement pressure | 145kPa (Gauge) |
| Repetition times of measurement | Maximum 100 times) |
| Mean number of measurements | Maximum 10 times |
| Measurement temperature range | 15-35°C, water bath: 15-50°C (option) |
| Calibration method | Automatic calibration with calibration sphere |
| Interface | Input: RS232C (communication with printer) Output: RS232C (communication with electric balance) |
| Dimensions (W x H x D) | 270 x 170 x 300 mm |
| Weight | 8 kg |
| Utility – Gas, Joint, Power | He, N2, inert gases: 150kPa (G); 1/8" Swagelok connection; AC100~120V/200-240 V / 200 W, 50 / 60 Hz |
| CE certified | Yes |