4.17 MEASURING CAPACITANCE
WARNING
Beware of Electrocution.
To avoid electric shock, make sure that the
capacitors have been fully discharged before
measuring the capacitance of a capacitor.
4.17.1 Plug the black test lead into the COM jack and the
red test lead into the jack.
4.17.2
Set the rotary selector to the
Ω
range position.
4.17.3 After fully discharged the capacitor, connect the test
leads to the two ends of the capacitor for
measurement.
4.17.4 Take the reading on the main indicator of the LCD.
NOTE:
1) It may take some time (about 30 seconds for the 200μF
range) for steady readings when measuring high
capacity.
2) Sometimes a reading may appear when the circuit is
open. In such case, press the “REL” button to reset
the reading and take measurement again.
4.18 TESTING DIODE
4.18.1 Plug the black test lead into the COM jack and the
red test lead into the jack.
4.18.2
Set the rotary selector to the
Ω
range position.
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DIGITAL MULTIMETER
OPERATING INSTRUCTION
4.18.3 Press the "SELECT" button to switch to test.
4.18.4 Connect the red test lead to the anode and the black
test lead to the cathode of the diode for testing.
4.18.5 Take the reading on the main indicator of the LCD.
NOTE:
1) The meter will show the approximate forward voltage
drop of the diode.
2) When the test leads have been reversed or open, ‘OL’
will appear on the LCD.
4.19 TESTING CONTINUITY
WARNING
Beware of Electrocution.
Make sure that the power of the circuit has been
turned off and the capacitors have been fully
discharged before testing the continuity of a circuit.
4.19.1 Plug the black test lead into the COM jack and the
red test lead into the Ω jack.
4.19.2
Set the rotary selector to the
Ω
range position.
4.19.3 Press the “SELECT” button to switch to for
continuity test.
4.19.4 Connect the test leads to the two ends of the circuit
for measurement.
4.19.5 If the resistance of the circuit being tested is less than
40Ω, the built-in buzzer will sound.
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DIGITAL MULTIMETER
OPERATING INSTRUCTION
4.19.6 Read the resistance on the main indicator of the LCD.
NOTE:
If the test leads are open or the resistance of the circuit is
over 400Ω, “OL” will appear on the LCD.
4.20 MEASURING RELATIVE HUMIDITY
4.20.1 This function is used for measuring the ambient
humidity around the meter.
4.20.2 Turn the rotary selector away from the OFF position.
4.20.3 The current ambient humidity will be shown on the
humidity display of the LCD.
NOTE:
1）The humidity sensor is placed inside the front part of the
meter and therefore it may take a longer time to reach
balance with the environment being measured.
Furthermore, it takes a longer intermission time, about
20 seconds, for sampling and the meter has to be
exposed to the environment for a longer time for
accurate reading. Hence it is not suitable for
measuring rapidly changing ambient humidity.
2）It will take some time for a steady RH reading when the
ambient humidity changes.
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DIGITAL MULTIMETER
OPERAT INSTRUCTIONING
4.21 MEASURING TEMPERATURE
(WITH THERMO-RESISTOR)
4.21.1 This function is used for measuring the ambient
temperature around the meter.
4.21.2 Turn the rotary selector away from the OFF position.
4.21.3 The current ambient temperature will be shown on
the temperature indicator of the LCD.
4.21.4 Press the "℃/℉" button to switch between ℃ and ℉
measurement.
NOTE:
1）The temperature sensor (thermo-resistor) is placed
inside the front part of the meter and therefore it may
take a longer time to reach thermal balance with the
environment. Furthermore, it takes a longer
intermission time, about 20 seconds, for sampling and
the meter has to be exposed to the environment for a
longer time for accurate reading. Hence it is not
suitable for measuring rapidly changing ambient
temperature.
2）The working temperature of the meter is 0 ~ 40℃. As
the temperature sensor is placed inside the meter, this
function is applicable for measuring ambient
temperature between 0 and 40℃.
3）If exposed to an environment beyond 0 ~ 40℃, the
meter may show a wider range of temperature
measurement, but the accuracy cannot be ensured
and damage to the meter may be caused.
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DIGITAL MULTIMETER
OPERAT INSTRUCTIONING
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