User Manual

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must insert the thermocouple in temperature test hole while examining
temperature.
B. This meter in closure WRNM-010 type contact thermocouple limit
temperature is 250 ℃ (300 ℃ shortly ) ;
C. Please don't change the thermocouple at will , otherwise we can't
guarantee to measure accuracy ;
Please don’t importing the voltage in the temperature function.
3.9 Diode test
1) Connect the black test lead to "COM" socket and red test lead to the " VΩ"
socket.
2) Set the selector switch to " " position.
3) Push "SELECT" to select diode test.
4) Connect the black and red test probe to the cathode (-) and anode (+)
ends of diode to be tested respectively, read the forward voltage drop
(junction) value from the display. If reverse connected the probes to
diode, display shows over-load.
Caution: Ensure that the circuit to be tested is "dead".
Max. input over-load: 250V rms＜10sec
3.10 Audible continuity test
1) Connect the black test lead to "COM" socket and red test lead to the "VΩ"
socket.
2) Set the selector switch to " " position.
3) Push "SELECT" to select audible continuity test.
4) Connect the probes across circuit to be tested, the beeper sounds
continuously if the resistance is less than approx. 90Ω.
Caution: Ensure that the circuit to be tested is "dead".
Max .input over-load: 250V rms＜10sec
3.11 Relative measurement
Press "REL", you can measure the relative value and "REL" appears on the
display, the auto range mode be changed to manual range mode. Press
again, return to the previous condition and "REL" disappears, but you
can not go back to auto range mode. In” Hz” measurement, you can
not measure the relative value.
4. CARE AND MAINTENANCE
4.1 CARING FOR YOUR MULTIMETER
Your Digital Multi meter is an example of superior design and craftsmanship.
The following suggestions will help you care for the multi meter so you can
enjoy it for years.
1) Keep the multi meter dry. If it gets wet, wipe it dry immediately. Liquids can
contain minerals that can corrode electronic circuits.
2) Use and store the multi meter only in normal temperature environments.
Temperature extremes can shorten the life of electronic devices, damage
batteries and distort or melt plastic parts.
3) Handle the multi meter gently and carefully. Dropping it can damage the