A gas
pycnometer operates by detecting the pressure change resulting from
displacement of gas by a solid object. Expanding a quantity of gas at known
pressure into an empty chamber and measuring the pressure establishes a
baseline.Then a sample is placed in the chamber and the chamber is resealed.
The same quantity of gas at the same pressure is again expanded into the sample
chamber, and the pressure is measured. The difference in the two pressure
combined with the known volume of the empty sample chamber allows the volume of
the sample to be determined by way of the gas law. The accuracy and precision
of the gas pycnometer in determining density is good, but the method relies
greatly on the cleanliness of the sample material and purity of the analysis
gas. In this case, Gold APP Instruments had explored a smart sample preparation
degasser for materials handle, can guarantee to gain the
"cleanliness" testing data.
G-DenPyc
2900 gas pycnometer helium true density analyzer parameters
Analysis Method: Volume displacement method/gas displacement
principle
Versatility: true (also terms as real,
absolute, apparent or skeletal) density analysis, rigid foam materials’
percentage of open/closed spaces analysis
Experimental Pressure: external vacuum pump is
available, can adopt negative pressure (0-1Bar) or positive pressure (1-2Bar)
two modes to analysis
Accuracy: accuracy ±0.02%, repeatability
±0.01%, resolution can reach 0.0001 g/cc
Sample Ports: three samples analysis
simultaneously
Pressure Accuracy: imported high-precision
pressure transducer, accuracy can reach 0.05% F.S., stability 0.025% F.S.
Adsorbate Gas: high purity Helium or air or Nitrogen
G-DenPyc
2900 gas pycnometer helium true density analyzer features
Data Reduction: high-precision PρT gas density
calculation model eliminates measurement errors caused by non-ideality gas
state, can increase analysis accuracy
Thermostatic System: analysis modules designed with
thermostatic system can control temperature up and down easily, also hold
modules stay at the best temperature(35 C) which can restrain transducer
reading’s temperature drift and keep system temperature uniformity; System can
maintain temperature at a fixed value for some fixed-temperature-required
samples
Control System: programmable logic controller
(PLC) system obtains high integration and strong anti-interference, software
operated fully automated analysis enables freely choose of multi experiment
modes
Analysis Management: programmable built-in system,
touch screen, USB type external keyboard and mouse, operated by connecting to
computer is available
Manifolds System: patented V-Sorb monolithic manifolds
system can improve sealing performance and reduce dead space largely, enhance
system temperature’s uniformity and anti-interference ability, all lead to a
high accuracy and repeatability data
Splash-proof Measures: installed
with a detachable filter in sample
cell’s bottom, can prevent samples be suctioned into manifolds; inputting gas
from bottom of cavity can avoid samples splash and software controlled H-Sorb
two-stage-stepping mode further ends splash happening
Sample Container: 50mm (diameter) and 180ml
(500ml is available) big cylinder sample cell is convenient for samples
filling; Exclusive G-DenPyc filling technology supports to choose different
volumetric aluminum blocks to fill cell instead change other sizes cells
according to samples’ volume, this innovative method realizes minimal free
space in cells and improve experiment accuracy
G-DenPyc
2900 gas pycnometer helium true density analyzer application
Apply to
research and quality control for below materials: ceramic, catalysts, filter
medium, nuclear fuel, oil & chemical industry, soil, fertilizer, carbon
black, hard coke, fiber, minerals, pharmacy, cosmetics, cement, powdered
foodstuff, desiccant (drying agent), powdered metal, ion exchange resin,
silicon gel, alumina, titanium dioxide, solid foam etc.
Contact info:
Email: sales@jinaipu.com
Tel.:
0086-10-82133318 Ext.810
Fax:
0086-10-82118197
Mobile:
0086-18210009838
IMs:
Skype:
Gold-APP-Instruments
