In order to take automatic measurements of adsorption equilibria of binary gas or vapor mixtures our partner company BEL Japan, Inc. has developed a volumetric gas dosing system for the ISOSORP. By combining the volumetric gas dosing (with manifold volumes) with the gravimetric measurement using the ISOSORP the sorption equilibria of binary gas or vapor mixtures can be measured automatically without analyzing the adsorptive concentration nor measuring the adsorbate concentration.
| measuring /control device | characteristic data | ||
| balance | |||
| resolution | 0.01 mg | 1 ~µg | |
| reproducinility | ± 0.02mg | 2µg | |
| sample load | up to 20g | up to 5g | |
| density measurement with Ti-sinker | ∆ p≤0.002 kg/m³ | ∆ p≤0.001 kg/m³ | |
| pressure | UHV up to 135 bar | ||
| pressure measuring | up to 4 sensors, ∆ p/p ≤≤0.25% MV | ||
| temperature |
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| gas circulaton | magnetically
coupled circulation pump ( up to 350 K and 150 bar) |
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| sample preparation | up to 720K (sample temperature)∆ | ||
| gas dosing connection | 2x | ||
| vapor dosing | 2 vapor pressure cells | ||
| vacuum system | rotary
pump ( turbomolecular pump) |
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