Temperature Calibration; Atmospheric Pressure Calibration - Hanna Instruments HI981954 Instruction Manual

8.5. TEMPERATURE CALIBRATION

From the "Calibration" menu select "Single param. calibration" and then "Temperature".
Options:
• Calibrate temperature: The user can perform a one-point calibration.
• Restore factory calib.: Clears previous user calibration.
Procedure
1. Remove the shield from the probe. Rinse the probe with purified water.
2. Place the probe in an isothermal bath with a reference instrument.
3. Allow the probe to come to thermal equilibrium.
4. Use the arrow keys to select "Calibrate Temperature" and press Select to start the calibration.
5. A text box window will appear. Use the keypad to enter the calibration temperature (-5.00 to
50.00 °C). Press Accept to confirm the value.
6. The stability timer will count down until the display shows the "Ready" message.
7. Press Confirm to store the calibration point. The message "Storing" followed by "Calibration
completed" is displayed.
8. Press OK to return to the calibration menu or Measure to return to the measurement screen.

8.6. ATMOSPHERIC PRESSURE CALIBRATION

From the "Calibration" menu select "Single param. calibration" and then "Atm. pressure".
Options:
• Custom pressure: The user can perform a one-point calibration.
• Restore factory calib.: Clears previous user calibration.
35