16
USER CALIBRATION
The
HI93551N
,
HI93551R
,
HI93552
and
HI93552R
models can be
calibrated at 0°C by using an ice bath.
• Prepare an ice bath with approximately equal volumes of distilled
water and chopped ice made from distilled water.
• Immerse the temperature probe in the center of the ice bath,
taking care not to touch the ice with the probe tip.
• Ensure that the meter is measuring a temperature within ±3°C.
• To enter the Calibration mode, press and hold the CAL button for
about 5 seconds.
• The CAL tag turns on to indicate that
the Calibration mode has been entered.
Note
: If the measurement is outside the
±3°C window, the meter does not
enter Calibration mode.
• When the meter reaches the stability condition, which is detected
when the measurement remains within ±0.2°C for 5 seconds,
the calibration is accepted and the reading becomes 0°C (32°F).
• The meter then automatically returns to normal mode.
Note
: To exit the Calibration mode at any time, press the CAL key.
Note
: User calibration cannot be entered in relative, average or in
T1-T2 mode.
Note
: User calibration is only performed on the current channel
displayed (T1 or T2).
FACTORY RECALIBRATION
All Hanna thermometers have been accurately pre-calibrated at the
factory.
It is generally recommended to have all thermometers recalibrated at
least once a year.
For an accurate recalibration, contact your nearest Hanna Customer
Service Center.
