YSI 63 - Manual (Page 22)

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5. Advanced Conductivity Setup
The default settings of the YSI Model 63 are appropriate for the vast majority of measurement
applications. However, some measurement applications require very specific measurement
criteria. For that reason, we have made the YSI Model 63 flexible to accommodate these
“advanced users.”
If, for example, you are using the YSI Model 63 for a process control application which requires
that the conductivity readings be compensated to 20
o C instead of 25 o C -- this is the chapter to
read. Or, if your application for the YSI Model 63 involves the measurement of a very specific
saline solution, the default temperature coefficient may need to be changed to get the very best
measurement of that specific salt.
IMPORTANT: There is never a need to enter Advanced Setup Mode unless your special
measurement application calls for a change in reference temperature and or temperature
coefficient. Therefore, unless you are certain that your application requires a change to one or
both of these criteria, do not modify the default reference temperature (25
o C) or the default
temperature coefficient (1.91%).
NOTE: Changing the reference temperature or temperature coefficient does not affect salinity
readings which are always referenced to seawater at 15°C. See 9.3 Salinity for details.
5.1 Changing The Temperature Coefficient
Follow these steps to modify the temperature coefficient of the Model 63.
1. Turn the instrument on and wait for it to complete its self test procedure.
2. Use the MODE key to advance the instrument to display conductivity.
3. Press and release both the DOWN ARROW and the MODE keys at the same time.
The CAL symbol will appear at the bottom left of the display. The large portion of the display will
show 1.91 % (or a value set previously using Advanced Setup).
4. Use the UP ARROW or DOWN ARROW key to change the value to the desired new
temperature coefficient.
5. Press the ENTER key. The word “SAVE” will flash across the display for a second to indicate
that your change has been accepted.
6. Press the MODE key to return to normal operation; the CAL symbol will disappear from the
display.