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WORKING PRINCIPLE
A gas pycnometer operates by detecting the pressure change resulting from displacement of gas
by a solid object. Expanding a quantity of gas at know pressure into an empty chamber and measuring the pressure establishes a baseline
Than 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 know volume of the empty sample chamber allows the volume of the sample to be determined of the gas law.
SPECIFICATIONS
- Method : Volume displacement method / gas expansion principle
- Sample Container : 3 ml, 10 ml, 15 ml and 70 ml standard containers
( It can customize any volume containers from 1 ~ 500 ml )
- Measuring range : 0.01 m2/g ~ no upper limit (surface area)
- Pressure Accuracy : 0.05% (F.S), 0.025% (Stability F.S)< 1%
- Experimental Pressure : External vacuum pump is available,
can adopt negative pressure (0~1 Bar) or positive pressure (1~2 Bar)
- Accuracy : ± 0.02 %
- Repeatability : ± 0.01 %
- Resolution : 0.0001 g/cc
- Adsorbate Gas : He, N2, Air
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