ElektroPhysik
E-19
4.4.1 Electrolyte saturation
The measuring cell is designed to carry out several
measurements subsequently without the need to change
the electrolyte solution. As soon as the electrolyte solution
has been saturated, the alphanumeric display (3) will
show „Electrolyte saturated“. In this case, you should
replace the solution by a fresh one.
The message „Electrolyte“ means that the electrolyte
solution will be saturated within a short time.
The following table shows the different de-plating
volumes at which the relevant electrolyte solutions will
be saturated.
Example:
For chrome, the electrolyte saturation point is reached
as soon as a volume of 300 µm/mm² chrome has been
de-plated.
4.4.2 Y-T writer output
During measurement, the cell voltage can be taken at
the Y-Twriter output (21) and displayed in the form of a
voltage curve relating to measuring time. This provides
supplementary information on the measuring process
especially regarding diffusion coatings.
If the Y-Twriter is switched on, a current flow can be
observed for a period of about 1/16 of the measuring
time, providing the measuring process has been stopped
automatically (not manually). Thus the voltage curve can
be monitored even after completion of the de-plating
process.
Metal
Cr
Ni
Cu
Ms
Zn
Ag
Sn
Pb
Cd
Au
De-plating
volume in
µm/mm
2
300
300
300
300
150
300
300
150
150
100
Free
program-
mable metal
memory
M1
M2
M3
M4
M5
M6
M7
M8
De-plating
volume in
µm/mm
2
300
300
300
300
300
300
300
300