ElektroPhysik
E-23
5.1 Centering device
The centering tool (55) is used when, because of the
shape of the sample, a C mask (1mm²) or D (0,25 mm
2
)
mask in combination with the rubber gasket (
∅
1,5mm)
for sealing the mask is required.
-
Clean the sample and stick the mask to the
required measuring spot. Place the centering
device into the outer measuring cell (42) and push
it down to the stop. Then connect the current
supply cable to the sample.
-
Center the measuring stand so that the pin of the
centering device slightly gets into contact with the
punch out of the mask. As soon as you’ve got the
right position, the LED at the centering device
lights up.
-
Place the measuring cell upon the sample (see
section 4.2.2) and remove the centering device.
-
For more information on the use of the centering
device in connection with the modified rubber
gasket D/Au please refer to section 8.3.
The centering device is powerd by a 6Volts battery, type
4LR44. To replace the battery, please loosen the two
hexagon sockets on the top of the centering device.
Remove the lid, change battery, close lid and fix the
screws again.
5.2 Positioning arm
The positioning arm (57) is used in connection with a
customized measuring set-up. It serves as stopper for
the measuring cell holder ensuring a constant position
of the measuring cell. The positioning arm can also be
used in connection with the small parts holder (see
section 6) or the electrolyte cup (section 7).