1) Even if there is no voltage indication, there may be voltage on the circuit. Do not
rely on NCV detector as the only way to detect voltage.
2) Voltage detecting may be affected by power socket design, type of insulation and its
thickness and other factors.
3) Interference sources in the external environment, such as flashing light, motor,
would cause wrong signal to activate alarm function.
4.10 DIODE AND CONTINUITY TEST
4.10.1 Insert the black test lead into “COM” terminal and the red one into “VΩmA”
terminal (the polarity of red lead is “+”);
4.10.2 Turn the rotary switch to “Ω
” range, and press “SELECT/
” key to choose
“
” mode;
4.10.3 Forward measurement: connect red test lead to the positive polarity and the
black test lead to the negative polarity of the diode. LCD will display the approx. value of
forward voltage drop;
4. 10.4 Backward measurement: connect red test lead to the negative polarity and the
black test lead to positive polarity of the diode. LCD will display “OL”;
4.10.5 The complete diode test includes forward and backward measurement, if the
result doesn’t meet the descriptions above; it means the diode is broken;
4.10.6 Press “SELECT/
” key to select the continyity measurement mode;
4.10.7 Connect test leads to two points of tested circuit, if the resistance is less than 50
Ω, the built‐in buzzer sounds.
NOTE:
1) DO NOT input voltage at “
Ω
” range.
2) When test circuits, make sure the power is off and all capacitors are discharged. Any
negative potential or AC signal will activate the buzzer.
4.11 TEMPERATURE MEASUREMENT
4.11.1 Turn the rotary switch to “
℃
/
℉
” range. Press “SELECT/
” key to select
℃
or
℉
mode.
4.11.2 Insert the cold end (free end) of thermocouple in “VΩmA(+)” and “COM(‐)”
terminal, and put the working end (temperature measuring end) of thermocouple on the
surface or inside the tested object. Then LCD will display the temperature of tested
object, and the reading is in
℃
/
℉
(when the polarity is contrary. The reading will
decrease when the temperature of the tested object increase).
NOTE:
1) When the input terminal is open circuit, it will display the environment
temperature.
2) To ensure measure accuracy, do not replace the temperature probe unless it is
necessary.
3) Do not input voltage at temperature range.
5. MAINTENANCE
This meter is a precise instrument. Any modification to the circuit is not allowed.
NOTE:
1) Don’t input the voltage value higher than 600V DC or ACrms.
2) Don’t input voltage at current, resistance, diode or continuity range.
3) Don’t make any measurements when the battery is not properly installed or the
back cover isn’t fixed.
4) Before replacing battery or fuse, please remove the test leads from the measuring
point and turn off the power.
5) Keep the meter away from water, dust and shock.
6) Don't expose the meter under high temperature, high humidity, combustible,
explosive and strong magnetic place.
7) Wipe the case with a damp cloth and detergent. Do not use abrasives and alcohol to
clean the meter.
8) If the meter will not be used for a long time, please take out the battery to avoid
leakage damage.
9) When “
” symbol is displayed, please replace the battery according to the
following steps:
1
Remove the holster at first.
2
Screw off the fixing screws of the battery door and remove the cover;
