TM300-EU-EN-V1.2 8/11
4
Operation
Connecting thermocouples
1. This meter accepts one or two K or J-type thermocouples with spade lugs (sub-
miniature type with one spade wider than the other).
2. Plug the thermocouple(s) into the meter's thermocouple input jack(s).
Measuring
1. Press the button to turn on the thermometer on. After 1 second the
thermometer will display the T1 reading in the upper display and the T2 reading in
the lower display. The display will indicate dashes (----) if no thermocouple is
connected to the input.
2. Press the C-F-K button to select the desired temperature unit of measure. A
display icon will reflect the selection.
3. Contact the object to be measured with the probe. Read the measured temperature
in the display.
Note: If the display indicates “OL” the temperature is outside the measurement
range. The display shows "- - - -" when a thermocouple is not connected.
MAX/MIN/AVG mode
Press the MAX/MIN button to begin recording the Maximum, Minimum and Average
measure value. “REC” and “MAX” will appear on the display and the elapsed time
display will appear.
1. Press MAX/MIN to enter this mode.
2. Press MAX/MIN to step through maximum, minimum and average readings.
3. Press and hold MAX/MIN for 3 seconds to return to normal mode.
Data Hold
Press the HOLD button to freeze the reading in the display. HOLD will appear at the top
right of the display. Press the HOLD button again to return to normal operation mode.
T1 T2 T1-T2
Press the T1 T2 T1-T2 button to cycle through the four display combinations.
No. Upper Display Lower display
1 T1 T2
2 T2 T1
3 T1-T2 T1
4 T1-T2 T2
C●F●K
Press the C●F●K button to select the displayed temperature units
Backlight
Press the SETUP
button to turn the LCD backlight ON/OFF.
