YSI 63 - Manual (Page 23)

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5.2 Changing The Reference Temperature
Follow these steps to modify the reference temperature 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. Press and release the MODE key; the large portion of the display will show
25.0C
(or a value
set previously using Advanced Setup).
5. Use the UP ARROW or DOWN ARROW key to change the value to the desired new
reference temperature (any value between 15 o C and 25 o C is acceptable).
6. Press the ENTER key. The word “SAVE” will flash across the display for a second to indicate
that your change has been accepted.
7. The instrument will automatically return to normal operation mode.
5.3 Changing Conductivity From Autoranging To Manual Ranging
If your application is easier to perform using a manual range which you select, the YSI Model 63
allows you to turn off the default autoranging feature. While you are making conductivity or
temperature compensated conductivity measurements, simply press and release the UP
ARROW key. Each additional press of the UP ARROW key will cycle the Model 63 to a
different manual range until you return again to autoranging. Five pushes of the UP ARROW
key will cycle the Model 63 through the four manual ranges and return the instrument to
autoranging.
NOTE: You may see an error message in some manual ranges if the manual range selected is
not adequate for the sample you are measuring. If this happens, simply press and release the UP
ARROW key again until a range is selected which is suitable for your sample. If you get lost
and don’t know if you’re in a manual range or autoranging, simply turn the instrument off and
back on. Also note that the conductivity units will flash while you are in manual range. The
instrument will always default to autoranging when first turned on.
The four conductivity ranges of the YSI Model 63 are:
Range 1 Range 2 Range 3 Range 4
0 to 499.9
µS/cm
0 to 4999
µS/cm
0 to 49.99 mS/cm 0 to 200.0 mS/cm