Electrolysis Device SGM5EL Application
6
2 Application fields
One application field of electrolysis cells is the production of defined gas
atmospheres with a low oxygen concentration (approx. 1ppm O
2
in N
2
.
With
the SGM5-EL, a defined amount of oxygen can be electrolyzed into or out of
the measuring gas (N
2
, argon). The downstream analysis cell ensures that
the oxygen concentration is measured accurately.
Another application field is the use for the solid electrolyte coulometry. In this
case the e.m.f. of the analysis cell is kept constant as nominal value of an
automatic control loop. The current at the electrolysis cell, resulting from it,
is proportional to the oxygen exchange by the cell. With the measurement of
I vs. t the oxygen exchange of arbitrary samples can be quantitatively
determined.
Furthermore, it is possible to set a defined humidity in a gas mixture. Oxygen,
for example, can be added to an argon hydrogen mixture. With the
downstream analysis cell and a special evaluation electronics the dew point
and so the humidity can be calculated.
Designated use
Main fields of application
•
Production of defined test gases e.g. for sensor tests
•
Examination of the oxygen permeation of polymers (e.g. foils)
•
Controlled outgassing of reactors
•
System calibration and monitoring of TA systems (TG, DTA, TMA, DSC)
•
Examination of the decomposition gases in thermal analysis
The introduction of explosive gas mixtures, halogens in high concentration,
and sulphuric gases (e.g. SO
2
) into the SGM5-EL is not permitted.
With the SGM5-EL
Functions
•
the oxygen concentration in a measuring gas can be maintained
•
the electrolysis current can be maintained
•
the change of the oxygen concentration caused by probe reactions
be quantified
•
the oxygen output or uptake of a probe be quantified by
interpretation of the I*t-diagram
•
technical inert gases can be adjusted at the requested purity
The requirements and limit values provided in the "Technical Data" must be
strictly observed.
Any other use is treated as non-authorized use.