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INSTRUMENT START-UP
• Turn the instrument on by pressing the
ON/OFF button.
• At start-up the display will show all used segments for
a few seconds (or while the button is held), followed by
the reference temperature value with “rEF” indication,
then enters the measurement mode.
• To save battery life, the auto-off feature automatically
turns the meter off after 5 minutes with no button
pressed. This feature can be disabled by entering the
setup mode and selecting the “AoF” item (see “Setup”
section for details).
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• For zero calibration, simply leave the dry probe in the air.
Notes:
• If temperature is out of range, the “buF” message
and the °C tag blink on the LCD. If the reading is
too far from the expected value, “buF” message
blinks.
• For best results calibrate using a standard value
close to the sample to be measured.
• During standard calibration the meter uses
1.90%/°C compensation coefficient. If the setup
item “tc” has been set to different value, when
exiting calibration mode, the value shown on the
LCD might be different from the nominal standard
value.
CUSTOM CALIBRATION
It is also possible to perform the EC (
AD310
) or TDS
(
AD410
) calibration using a custom solution.
• Immerse the probe into the custom calibration solution.
Press SHIFT and CAL keys to enter the calibration
and then RANGE to enter custom calibration mode.