OPERATION
• Turn the meter ON.
• Dip the probe into the sample to be
measured. An immersion level of 4 cm
(1 ½") is recommended. Do NOT im-
merse above the connector.
• Wait for a few seconds for the display to
stabilize.
• When not in use, switch the meter OFF.
ISTCKTM R2 06/05
• Variations in readings or fading display
can indicate a weak battery.
CALIBRATION CHECK
®
Open the battery
cover and slide
down the Cal-
Check
®
switch.
The display should show 0.0°C ±0.3°C
or 32°F ±0.5°F. This assures the user that
the reading is reliable and accurate.
Contact your dealer or the nearest Hanna
Service Center for recalibration, if neces-
sary.
Slide the Cal-Check
®
switch back up and
close the battery cover. The meter returns
to measurement mode.
BATTERY REPLACEMENT
When the thermometer can not be switched
on or the display fades, open the battery
compartment (see pic-
ture) and replace the
1.5V battery, while
paying attention to its
polarity.
Reattach the battery
cover.
Battery should only be replaced in a safe
area using the battery type specified in this
instruction sheet.
MEASUREMENT
MODE
CALIBRATION
CHECK
MODE
