User Guide

11
Reattach the back making sure that the gasket is in place and
tighten the 4 screws to ensure a watertight seal.
CALIBRATION CHECK
(for HI 93501, HI 93502 and HI 93503)
The HI 93501, HI 93502 and HI 93503 models are provided with
the Cal-Check feature, which allows the user to check the instrument
calibration status at any time.
Press and hold the CAL CHECK button.
If the meter is calibrated, the display will
stabilize and show “0.0°C” (±0.3°C) in a
few seconds.
To return to measurement mode, release the button.
Contact your dealer or your nearest Hanna Service Center for recali-
bration, if necessary.
°C/°F SELECTION (HI935007 ONLY)
• The meter displays the measured temperature, automatically
switching to the resolution suitable for the temperature range; i.e.
0.1° up to 199.9°C (399.9°F), or 1° above.
• The user can select the measurement
unit by pressing the °C/°F button.
BATTERY REPLACEMENT
When the remaining battery life is less than
10% the battery tag blinks on the display
to warn the user.
If the battery level is low enough to cause erroneous readings, the
Battery Error Prevention System (BEPS) turns the meter off.
Immediately replace the batteries with new ones.
Battery replacement must only take place in a non-hazardous area