User Guide

USER CALIBRATION

The HI 93510N and HI 93522 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 or in T1-T2 mode.

Note: User calibration is only performed on the current channel

displayed (T1 or T2).

All Hanna thermometers have been accurately pre-calibrated at the

factory. It is generally recommended to have all thermometers recali-

brated at least once a year. For an accurate recalibration, contact your

nearest Hanna Customer Service Center.

Hanna Accuracy Test Plugs provide a quick and easy way to check the

meter's accuracy by simply connecting these Test Plugs to the probe

connector of the meter. If the reading differs by more than ±0.4°C

(±0.8°F) from the Test Plug value, the meter is due for recalibration.

Choose the right Test Plug to suit your needs:

HI 762-18C Calibration key, -18.0°C

HI 762000C Calibration key, 0.0°C

HI 762070C Calibration key, 70.0°C

HI 762-004F Calibration key, -0.4°F

HI 762032F Calibration key, 32.0°F

HI 762158F Calibration key, 158.0°F

FACTORY RECALIBRATION