8
MEASUREMENT PROCEDURE 850051 & 52
1. Calibrate routinely before use.
2. Remove the protective cap and clean the
electrode with de-ionized/distilled water.
Do not touch the glass bulb.
3. Press >1 sec to turn on the unit.
4. Dip/stir the electrode into the sample.
5. The pH value is displayed.
6. “- - -” is displayed when the pH sample is out
of range.
7. “H” or “L” is displayed when the temperature is
out of range.
8. To switch between °F and °C, start with the unit
off, then simultaneously press CAL and .
9. Release both buttons when “C” or “F” is shown.
10. Press ▲ to select the preferred unit, then
press CAL to save.
11. “SA” (save) is displayed and the
unit returns to measurement mode.
12. During measurement, press ▲ to freeze the
reading on the LCD. “Hold” is displayed. Press
▲ again to return to normal measurement.
