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ExVA Kft.
High Capacity Precision Digital Gas Mixer
Testing-Certification
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ExVA Kft. Hungary
The reliable mixers
The   precision   digital   gas   mixer   is   a   universal,   mobile   apparatus   capable   of   adjusting the   required   mixture   of   the   gas,   selected   by   the   user,   with   air,   mainly   to   fill   up explosion chambers. The apparatus is usable alone. The   capacity   of   the   equipment   is   threefold   of   the   standard   precision   digital   gas   mixer. According this the quantity of the delivered mixture is threefold too. The   apparatus   is   completely   automatic,   requiring   only   the   connection   of   the   selected gas, the air and the electric power. The mixing process is of totally closed system. When   the   specified   input   pressures   resp.   the   possible   minimum   differential   pressure are   set,   the   mixture   will   be   produced   independently   of   the   ambient   pressure.   Due   to the   closed   system   mixing,   neither   the   ambient   temperature   nor   the   moisture   content will influence the produced mixture.
Technical parameters: - Computer controlled automatic apparatus (the software is attached) - Controlling: keyboard, mouse, USB to computer - Gas/air mixing range: 1- 99 vol.% accuracy: + 0,2 vol.% … - 0.13 vol.% - Inlet pressure: gas inlet – appr. 1 bar   air inlet  – appr. 1 bar - Quantity of the delivered gas/air mixture: 1-99 Vol. % 699 l/h-258 l/h - Mains supply: 230 VAC / 50 Hz
Accuracy of the mixing apparatus is + 0.2 vol.%, … - 0.13 vol.%. In the whole range 1 – 99 vol.% can be changed the necessary gas-air mixture without any additional apparatus.  
The mixing unit does not require oil lubrication. Thus no oil vapour will get into the mixture that would settle onto the parts of the explosion chamber, that would make measuring impossible .