Hanna Instruments HI 84529 - Manual (Page 26)

www. hannainst .com 26 Operational Guide
calibration or ESC to exit calibration.
5. After the calibration point has been confirmed, press ESC to exit without
performing the second calibration point.
2 Point Calibration
1. After pressing CONFIRM in step 4 of
1 point calibration procedure of the
calibrated value will be shown on
the display and the second expected
buffer value will be displayed.
2. Remove the electrode holder with
electrodes from the top of the beaker.
3. Place the second beaker with calibration buffer in the beaker holder.
Rinse the electrodes in a beaker containing the second buffer rinsing
solution.
4. Place the electrode holder (with electrodes) on the top of the beaker
and secure it by turning clockwise and press STIR.
5. If necessary, press the ARROW keys in order to select a different buffer
value. The (unstable measurement) symbol will be shown on the
display until the reading becomes stable.
6. When the reading is stable and close to the selected buffer, the (unstable
measurement) symbol will disappear and the Confirm key will become active.
7. Press CONFIRM to confirm the calibration.
8. The calibrated value will be shown on the display and the third expected
buffer value will be automatically selected.
9. After the second calibration point has been confirmed, press ESC to exit
without performing the third calibration point.
3 Point Calibration
1. Remove the electrode holder with
electrode from the top of the beaker.
2. Place the third beaker with calibration
buffer in the beaker holder. Rinse the
electrodes in a beaker containing the
third buffer rinsing solution.
3. Place the electrode holder (with
electrodes) on the top of the beaker and secure it by turning clockwise
Electrode
Calibration
Procedure