9
13. Switching between Centigrade (°C) and Fahrenheit (°F)
The PC-8400
Ⅱ
can use either measurement unit, Centigrade (°C) (default) or Fahrenheit (°F). To switch
from one unit to the other, press the Scan key once and then the Mode key four times. When the current unit
indicator begins blinking, press the Scan key again to change the unit.
14. Putting the vinyl cover onto the Thermometer
It is recommended to use the thermometer putting the vinyl cover when it is used in a dusty environment or
in the place oil and water may be splashed. (Main unit is not waterproof type)
15. Maintenance
The accuracy of measurement is affected by dust or dirt on the surface of the infrared
lens. Prevent dirt or dust from adhering to the surface of the lens during use or storage.
When removing dirt from the infrared lens, use a blower for camera lenses. If stubborn
stains persist, clean the surface of the lens softly with a swab moistened with lens
cleaning liquid.
Note
: Never clean the infrared lens with water or detergent. Doing so may affect the performance of the
lens and cause inaccurate measurements.
16. Error Codes
Error Code
Description
Action to be taken
Measured
temperature
exceeds 250°C.
Immediately stop measuring the object which is too hot.
Otherwise, the sensor may fail.
The measurable temperature range is from –60 to 250°C.
Measured temperature is
lower than –60°C.
Immediately stop measuring the object which is too cold.
Otherwise, the sensor may fail.
The measurable temperature range is from –60 to 250°C.
The ambient temperature
changes are too extreme.
Move the thermometer to an environment where the
ambient temperature is stable. (When the ambient
temperature changes are too extreme for the temperature
compensation function to work properly, the readings
become unstable.)
The ambient temperature
is out of the operating
range of 0 to 50°C.
Select an environment where the ambient temperature is
in the range of 0 to 50°C.
Trouble other than those
listed above
Remove the battery and wait for one minute before
reinserting it. If the "Er" code still remains lit, the internal
electronic circuits may be damaged. Contact our
representative or our Service Network.
