Oakton -02 Operating Instructions Manual - page 6
11
10
5. Calibration
Temperature calibration using offset adjustment
The temperature sensor included with your meter is factory calibrated. Over time,
the temperature calibration may drift and require recalibration. If you replace the
probe you should recalibrate.
1.
Connect your temperature probe to the meter. Turn meter on. Meter enters
measurement mode.
2.
Compare displayed value to a NIST certified thermometer or other thermometer
known to be accurate. For best accuracy, place probe and thermometer in a con-
stant temperature bath.
3.
Press the CAL key to enter calibration mode.
The LCD shows "CA" and the reading flashes.
See figures
4.
Use the ▲ and ▼ keys to adjust the
temperature shown to match the accurate
temperature (maximum adjustment is
±10°C / ±18°F from factory default).
5.
Press ENTER key to confirm calibration.
The LCD displays "CO", and the meter
then reverts to measurement mode.
5.1
A
B
°
C
A
B
6. Troubleshooting
Problem
Cause
Solution
“Ur” or “Or”
Measurement over (Or) or
—
on LCD
Under (Ur) range.
Bad temperature
Change temperature
probe
probe
oPEn annunciator
Probe not connected
Make sure probe
on LCD
is firmly connected
LO annunciator
Low battery
Replace batteries
on LCD
with fresh set
Power on but
Batteries not
Insert batteries
no display
in place
Batteries not in
Re-insert batteries
correct polarity (+ and -)
with correct polarity
Weak batteries
Replace batteries
Unstable
Probe not deep
Place probe
reading
enough in sample
deeper in sample
Broken probe
Replace probe
External “noises” or
Remove or switch off
induction caused by
interfering motor
by nearby electric motor
Dirty probe
Clean probe
Slow response
Dirty probe
Clean probe