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Instruction Manual
5.4 Temperature Calibration
In order to ensure the temperature control accuracy, based on the temperature calibration
function, it is recommended to calibrate the temperature whenever the heating block is
changed.
The device adopts the three-point temperature calibration method at 10°C, 50°C, and 90°C.
The linear calibration of the three temperature points ensures the accuracy of the three
temperature points of the system within ±0.5°C.
At the time of temperature calibration, the ambient temperature must be 15°C to 25°C.
Calibration procedure
1. Inject silicon oil into the hole in the center of the heating block. Place the thermometer
probe in the oil filled hole.
2. Turn the instrument On. Press both the Prog and Temp buttons at the same time to enter
into Calibration mode while self-checking only.
NOTE:
The instrument cannot enter into Calibration mode if the self-check is complete.
Set temperature
Actual temperature
Calibration temperature
Parameter adjustment knob
Figure 3.
Calibration interface
3. Rotate the Parameter knob to set the target temperature for calibration. Press the
parameter knob and confirm the set values.
4. The actual Temp reaches the set temperature and remains constant for 20 to 30 minutes.
The calibration area will display the corresponding temperature on the display. Record the
measurement on a thermometer, rotate the parameter knob to adjust the calibration Temp
to actual thermometer temperature value (Calibration temp. adjustment range is Set temp.
±5°C), and press the same knob to confirm settings.
5. To ensure the calibration temperature adjustment is set correctly, press the knob and the
instrument will enter the second Calibration temperature. Repeat Step 4. After the third
temperature calibration is completed, the screen displays Calibration Success on screen,
and the instrument will automatically enter into the self-check mode. Then, calibration is
complete.
If the display screen shows the “Cali Failed” interface, the input value of calibration may be
wrong. Restart the instrument, and repeat the calibration steps again.
