galvanic oxygen cell - how they work
galvanic oxygen cell
type n
serial no.
date
offset
galvanic oxygen cell supplied by hitech instruments ltd, luton england consists of galvanic oxygen cell type n, type l, type h and type e.
thegalvanic oxygen cell is a diffusion limited metal/air hattery. the oxygen in the sample diffuses through the barrier and reaches the cathode. here it is reduced to hydroxyl ions which, in turn, pass through the electrolyte to oxidise the metal anode.
a current, proportional to the rate of consumption of oxygen, is generated when the cathode/anode circuit is completed, the cell operating in what is virtually a short-circuit condition.
the cell current is a direct function of the rate at which oxygen reaches the cathode.
however galvanic oxygen cell type e operates in a slightly different way. this enable it to measure oxygen in samples containing high amount of carbon dioxide. it is linera up to 100% and provides a millivolt, rather than a current output.
for details, please refer to 安利三維（天津）科技有限公司。

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