Manual
13
Background information on a probe with a membrane in the measurement head:
This is a thin
membrane made of Teflon® which can be found in the probe tip. Oxygen molecules can pass through the
membrane whereas the substantially bigger molecules contained in the electrolyt cannot. This feature
enables the oxygen to spread out in the electrolyte of the probe and ist concentration can be measured.
To fill the electrolyte
1.Unscrew the probe head (3).
2.Remove the old electrolyte from the probe head.
3.Put the new electrolyte (OXEL-3) into the probe head.
4.Screw the probe head back together with the case.
Note: When the probe is not in use, the probe head must be in the protective bottle.
(1) Case
(2) Temperature sensor
(3) Probe head
5.14 Other functions
Data Hold
If you push the Hold button (3) once during the measurement, the values on the display are held
(“frozen“) and the HOLD symbol is displayed. This function can be cancelled by pushing the Hold button
again.
Data record
The “data record“ function allows you to save the maximum and minimum values. Push the REC button
(4) once to activate the memory function. The REC symbol is displayed. Das REC-Symbol wird
angezeigt.
When the REC function is switched on:
-
If you push the REC button once, the maximum value and the “REC MAX“ symbol are displayed. If you
want to delete the maxim
um value, push the Hold button (3) once. Only the “REC“ symbol is displayed
and the memory function is continued.
-Pushing the REC button again causes the minimum value to be displayed again. At the same time,
“REC. MIN“ is displayed. If you want to delete the minimum value, push the Hold button (3) once. Only
the “REC“ symbol is displayed and the memory function is continued.
-To finish the memory function, push the REC button for at least two seconds. The display shows the
current measurement.
Backlight
After switching on the device, the backlight is automatically on. You can switch it off by pushing the power
button (2) once. You can switch it back on by pushing the button again.
5.15 Datalogger
Preparation before logging:
1.Insert the SD card.