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Operating instructions
Measuring Voltage
1. Connect the BLACK test lead to the "COM" jack and the RED to the "INPUT" jack.
V
2. Set the function switch to
3. Connect the test leads across the source or load to be measured.
4. Press the SEL button, to select
5. Read LCD display. The polarity of the RED lead connection will be indicated when making a DC measurement.
Note:
a. In small range, the meter may display an unstable reading when the test leads have not been connected to the load to be measured. It is normal and will
not affect the measurements.
b. To avoid damage to the meter, don't measure a voltage which exceeds 600Vdc (for DC voltage measurement) or 600Vac (for AC voltage measurement).
Measuring Current
1. Set Function/range Switch to the A~ range.
2. Press the trigger to open the transformer jaws and clamp one conductor only it is impossible to make measurements when two or three conductors are
clamped at the same time.
3. Display reading is flowing the conductor AC current.
Measuring Resistance
1. Connect the BLACK test lead to the "COM" jack and the RED to the "INPUT" jack (Note: The polarity of the red test lead is positive "+").
2. Set the range switch to Ω or
3. Connect the test leads across the load to be measured.
4. Read the reading on the display.
Note:
a. For resistance measurements >1MΩ, the meter may take a few seconds to stabilize reading. This is normal for high-resistance measurement.
b. When the input is not connected, i.e. at open circuit, the symbol "OL" will be displayed as an over-range indicator.
c. Before measuring in-circuit resistance, be sure that the circuit under test has all power removed and all capacitors are fully discharged.
Continuity Test
1. Connect the BLACK test lead to the "COM" jack and the RED to the "INPUT" jack (Note: The polarity of the red test lead is positive "+").
2. Set the range switch to
or
3. Press the "SEL" Button to select continuity measurement mode, and the symbol "
4. Connect the test leads across the load to be measured.
5. If the circuit resistance is lower than about 30Ω, the built-in buzzer will sound.
Diode Test
1. Connect the BLACK test lead to the "COM" jack and the RED to the "INPUT" jack (Note: The polarity of the red test lead is positive "+").
2. Set the range switch to
or
3. Press the "SELECT" Button to select continuity measurement mode, and the symbol "
4. Connect the red test lead to the anode of the diode to be tested and the black test lead to the cathode.
5. The meter will show the approximate forward voltage of the diode. If the connections are reversed, "OL" will be shown on the display.
Measuring Temperature
1. Set the function Range switch at the °C or TEMP position.
2. Make sure the polarity of the thermocouple is correct; put the cold end (free end) of the thermocouple sensor into the terminal (black to COM jack and
red to VΩ jack).
3. Set the working end (testing end) on or inside the object under test.
4. The value of the temperature is shown on the display in degree centigrade (°C).
NOTE:
a. The testing temperature is displayed automatically when the thermocouple is put into the testing holes.
b. The surrounding temperature is shown when the circuit of the sensor is cut off.
c. The limit temperature measured by the thermocouple given together with the instrument is 250°C; 300°C is acceptable within short period.
NCV test
1. Set the rotary switch to "NCV" position, LCD display "EF ".
2. Close the front end of the clamp to the measured socket.
3. When NCV detects AC voltage between 90v to 1000v sound and light alarms at the same time. Distinguish live and neutral wires: Not sound and light
alarmed when detecting neutral wire,
4. Sound and light alarmed when detecting live wire.
Caution: Do not input voltage at NCV mode.
Sound and alarm may appear in the meter when there is a strong electric field in the surrounding environment. It is possible to make an error alarm.
At NVC position, press the backlight button and the NCV indicator LED is lit, which is normal.
Warning: Be cautious of electrical current when detecting high voltage. NCV range: 90-1000v.
Frequency measurement of ACA (only 2015B)
1. Set the rotary switch to
2. Press Hz % key to select frequency/cycle measurement function.
3. Same as the operation method of measuring AC current.
4. Read the result from the LCD.
5
range position.
V
V
or
range.
range position.
range position.
range position.
~
Hz% A
position.
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" will appear as an indicator.
" will appear as an indicator.
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