MT-3102 3 1/2 mini digital clamp meter is a 3 1/2-digit
LCD multi-meter for measuring AC and DC voltage, AC
current, resistance, temperature, Diode and continuity
test. All overload protection is provided. The
function/range rotatable switch design makes manual
operation workable, and range selector, power switch are
all on one know. The select buttons for easy function
change. It is ideal instrument for use in fields, factory,
college and laboratory.
SAFETY INFORMATION
This digital clamp meter has been designed according
safety standard IEC-61010-I and LECI010-2-032
concerning electronic measuring instruments with an
voltage category(CAT II 600V)and pollution degree 2
ELECTRICAL SYMBOLS
Warning
Alternating
signal test
Diode test
Conforms to European Union directives
Dangerous voltage may be present.
Capacitor
Earth
Ground
Direct
signal
test
Low Battery
1
over
Double
insulated
(Protection
class II)
Continuity
buzzer
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3 1/2 2A Mini Digital Clamp Meter user manual
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SAFETY WARNING
1. Read the operating instructions before using the
instrument and pay particular attention to all
WARNINGS and CAUTIONS in this instruction
manual.
2. Be sure that the cover and the test leads of the
meter are in good conditions.
3. Set the range / function switch at the correct position
when measuring.
4. Make sure to insert the red and the black test leads
to their appropriate jacks. The black test lead should
be connected first when measuring while the red
test lead should be disconnected first after
measuring.
5. When the range and function changes, both test
leads should be disconnected.
6. To avoid damage to the instrument, never exceed
the allowable maximum input of each range.
7. Be care of electric shock hazard when the voltage to
be tested is above DC 60V or AC 30V.
8. To avoid electric shock, do not open the battery
compartment cover when making measurement.
9. Remove the test leads from the circuit being
measured before replacing the battery.
10. Do not change the built-in circuit to avoid damage to
the meter.
11. Do not use or store the instrument in an explosive
atmosphere (i.e. the presence of flammable gas or
fume, vapor or dust)
12. CAT II-Measurement Category II is for
measurements performed on circuits directly
connected to low voltage installation.(Examples are
measurements on household appliances, portable
tools and similar equipments.)Dot not use the meter
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3 1/2 2A Mini Digital Clamp Meter user manual
for measurements within Measurement Categories
III and IV
13.
MT-3102 SELECT MAX HOLD
DC Voltage N/A ● ●
AC Voltage N/A ● ●
Resistance,
Continuity,Diode test
Temperature
℃/℉(K-Type)
● N/A ●
● N/A ●
DC current 2/20A N/A ● ●
AC current 200/400A N/A ● ●
FRONT PANEL DESCRIPTION
1. COM Input Jack / V/Ω Input Jack
2. 1/2-digit LCD Display Panel
3. Function Switch Button
(SEL/MAX/HOLD)
4. Function/range select rotary selector
5. Trigger
6. Protection edge
7. Current Clamp
LCD DISPLAY SYMBOLS
~
AUTO
HOLD
℃/℉
nating signal test
Alte
Direct signal test
Low Battery
Auto range mode ?
Diode test
Continuity buzzer
This indicates that the display data is being held
Temperature test
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3 1/2 2A Mini Digital Clamp Meter user manual
Ω
μm / VA
MAX
-
Ohms, Kilo-ohms, mega-ohms resistance test
Amperes(Current)or Milli-volts, Volts(Voltage)
The maximum value is being measured
Negative polar mark
GENERAL SPECIFICATIONS
1. Auto range and manual range options are available.
2. Over range protection is provided for all ranges.
3. Display:3 1/2-digit(1999 count)
4. Measuring method:Dual slope integration A/D
converter
5. Sampling speed:2-3 time/sec
6. Unit display:Function and unit symbols displayed
7. Polarity:Automatic negative polarity display
8. Overload indication:Symbol “1”appears on the LCD
9. Low battery indication:Symbolappears on the LCD
10. Auto power off time:15min
11. Operation temperature:0~40℃,≦75%RH
12. Storage temperature:-20℃~60℃, ≦75%RH
13. Operation power:1.5V x 3AAA Batteries
14. Dimension:203mm(L)x68mm(W)x33mm(D)
15. Weight:187g(without battery)
BUTTON FUNCTION AND AUTO POWER OFF
1. HOLD: For measuring data hold, press the HOLD
button, the peak value of current data will be
keeping displaying on LCD; press it again to cancel
this function
2. MAX: Maximum data hold button, when press this
button, the A/D converter will keep measuring, and
the display updating the data and hold the maximum
data
3. SELECT:Function selection button, press for
switching ohm / diode /continuity/ temperature
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3 1/2 2A Mini Digital Clamp Meter user manual
function when tested objects change
4. Auto-power off : If there is no any operation within any
fifteen minutes after power is on, the meter will auto
power off. Turn the rotary selector or press any
function button to resume operation of the meter
under the auto power off mode. At the same time
when power on, if press the ”HOLD” button, auto
power off will be disable.
NOTE:
(1) When the meter auto power off under temperature
measuring function, and rotate the selector to any
measuring function, the meter will be able to resume
operation, except ACV measuring function.
(2) After automatic turn-off, THEN press HOLD to
re-start, the function of automatic turn-off will be
cancel.
5. Buzzer
Set the selector to any measuring function (except
2/20A ACV function), press any button, the buzzer will
sound; otherwise, the button is idleness. One minutes
before auto power off, the buzzer continue sound in
five times, and one long buzz before power off.
Note: when the selector in measuring function of
2/20A ACV, the buzzer won’t sound.
Input impedance:10MΩ
Frequency range:40~400Hz
AC Current:Auto Range
Range Resolution Accuracy Overload
protection
±(4%+20d)
2A 1mA
0.4A≦
±(3%+15d)
20A 10mA
±(3%+15d)
0.4A≦
400A rms
±(2%+10d)
200A 0.1V
400A 1A
±(2%+5d)
Frequency range:40~400Hz
Resistance:Auto Range
Range Resolution Accuracy Overload
protection
200Ω 100mΩ ±(1.2%+5d)
2KΩ 1Ω
20KΩ 10Ω
200KΩ 100Ω
±(1%+3d)
600Vp
2MΩ 1KΩ ±(1.2%+5d)
20MΩ 10KΩ ±(1.5%+5d)
3 1/2 2A Mini Digital Clamp Meter user manual
Continuity:
RangeResoluti
on
100mΩBuilt-in buzzer
Accuracy Overload
protection
will sound, if
resistance is
600Vp
lower than
50Ω≦
Open circuit voltage ~ 0.45V
Diode:
RangeResolutionAccuracy Overload
protection
1mV Displaying
approximate
forward
600Vp
voltage of
diode
Open circuit voltage ~ 1.48V
Temperature: /℃℉
RangeResolution Accuracy Overload
protection
-40 ~32 ±℉℉
-40 ~℉
1832
℉
-40 ~℃
1000
℃
1℉
1℃
(3%+8d)
0 ~752 ±℉℉
(1%+6d)
752 ~1832 ±℉℉
(2%+18d)
-40~0±℃℃(3%+4d)
0 ~400 ±℃℃
(1%+3d)
400 ~1000 ±℃℃
600Vp
(2%+10d)
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3 1/2 2A Mini Digital Clamp Meter user manual
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MEASURING AC VOLTAGE
1. SAFETY INFORMATION
WARNING
Beware of Electrocution
Pay special attention to avoid electric shock when
measuring high voltage. Do not input the voltage which
more than 600V rms AC.
1. Plug the black test lead into the COM jack and the
red test lead into the V/Ω Jack.
2. Set the rotary selector to V~ position to make the
meter get into AC V range.
3. Connect the test leads to the voltage source or
load terminals for measurement.
4. Take the reading on the LCD.
MEASURING DC VOLTAGE
Beware of Electrocution
Pay special attention to avoid electric shock when
measuring high voltage.
Do not in
ut the voltage which more than 600V DC.
WARNING
1) Plug the black test lead into the COM jack and the
red test lead into the V/Ω Jack.
2) Set the rotary selector to V
position to make
the meter get into DC V range.
3) Connect the test leads to the voltage source or
load terminals for measurement.
4) Take the reading on the LCD.
MEASURING AC CURRENT
Beware of Electrocution.
Ensure that the test leads are disconnected from the
meter before making current clamp measurements.
WARNING
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3 1/2 2A Mini Digital Clamp Meter user manual
1) Set the rotary selector to the A~2A/20A or
200A/400A range position.
2) Press the trigger to open jaw. Fully enclose only one
conductor.
3) Take the reading on the LCD.
MEASURING RESISTANCE
Beware of Electrocution.
Ensure that the test leads are disconnected from the
meter before making current clamp measurements.
WARNING
1) Plug the black test lead into the COM jack and the
red test lead into the V/Ω Jack.
2) Set the rotary selector to Ω/
/ range position to
make the meter get into AC V range.
3) Connect the test leads to the ends of the resistance
or circuit for measurement.
4) Take the reading on the LCD.
TESTING CONTINUITY
Beware of Electrocution.
Make sure that the power of the circuit has been
turned off and the capacitors have been fully
dischar
ed before testing the continuity of a circuit.
WARNING
1) Plug the black test lead into the COM jack and the
red test lead into the V/Ω Jack.
2) Set the rotary selector to Ω/
3) Press the “SEL” button to switch to
/ range position.
continuity
test.
4) Connect the test leads to the ends of the resistance
or circuit for measurement.
5) If the resistance of the circuit being tested is less
than 50Ω, the built-in buzzer will sound.
6) Take the reading on the LCD.
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3 1/2 2A Mini Digital Clamp Meter user manual
TESTING DIODE
1) Plug the black test lead into the COM jack and the
red test lead into the V/Ω Jack.
2) Set the rotary selector toΩ/
3) Press the “SEL” button to switch to
/ range position.
test.
4) Connect the red test leads to the anode and the
black test lead to the cathode of the diode for
testing.
5) Take the reading on the LCD.
TESTING TEMPERATURE
1) Plug the black test lead into the COM jack and the
red test lead into the V/Ω Jack.
2) Set the rotary selector to /℃℉range position.
3) Connect the red test leads to the anode and the
black test lead to the cathode of the temperature
load for testing.
4) Take the reading on the LCD.
REPLACING THE BATTERIES
To avoid electric shock, make sure that the test leads
have been clearly move away from the circuit under
measurement before opening the battery cover of the
meter.
1) If the sign
WARNING
appears, it means that the batteries
should be replaced.
2) Loosen the fixing screw of the battery cover and
remove it.
3) Replace the exhausted batteries with new one.
4) Put the battery cover back and fix it again to its
origin from.