YSI 30 - Manual (Page 18)

Calibration Section 5
YSI, Incorporated Model 30/30M 14
6. Allow at least 60 seconds for the temperature reading to become stable.
7. Move the probe vigorously from side to side to dislodge any air bubbles from the electrodes.
8. Press and release both the UP ARROW and DOWN ARROW keys at the same time. The
CAL symbol will appear at the bottom left of the display to indicate that the instrument is now
in Calibration mode.
1014
µS
24.8 °C
CAL Cal symbol
9. Use the UP ARROW or DOWN ARROW key to adjust the reading on the display until it
matches the value of the calibration solution you are using.
1000
µS
24.8 °C
CAL
Value of calibration
solution at 25°C
10. Once the display reads the exact value of the calibration solution being used (the instrument will
make the appropriate compensation for temperature variation from 25°C), press the ENTER
key. The word “SAVE” will flash across the display for a second indicating that the calibration
has been accepted.
SAVE
NOTE: If the up or down arrow keys are not pressed during the calibration process, the “SAVE”
message will not be displayed since the calibration value has not changed. If an error occurs
during calibration, see Section 9, Troubleshooting.