Pro's Kit MT-3102 User manual

MT-3102
3 1/2 2A Mini Digital Clamp Meter

3 1/2 2A Mini Digital Clamp Meter user manual
1
User’s Manual
1st Edition,2010
©2014 Copy Right by Prokit’s Industries Co., Ltd.
INSTRUCTION
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 over voltagecategory（CATII 600V
）and pollution degree 2
ELECTRICAL SYMBOLS
Warning
Earth
Ground
Double
insulated
(Protection
class II）
Alternating
signal test
Direct
signal
test
Continuity
buzzer
Diode test
Low Battery

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Conforms to European Union directives
Dangerous voltage may be present.
Capacitor
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.

3 1/2 2A Mini Digital Clamp Meter user manual
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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 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
●
N/A
●
Temperature
℃/℉(K-Type)
●
N/A
●
DC current 2/20A
N/A
●
●
AC current 200/400A
N/A
●
●

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FRONT PANEL DESCRIPTION
1. COM Input Jack / V/ΩInput 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
~ Alternating signal test
Direct signal test
Low Battery
Auto range mode ？
Diode test
Continuity buzzer
HOLD
℃/℉
Ω μm /
VA
MAX
This indicates that the display data is being held
Temperature test
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）
AUTO

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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：Symbol appears 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 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

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mode. At the same time when power on, if press the
”HOLD” button, auto

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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.
ELECTRICAL SPECIFICATIONS
Accuracy：±（%reading + digits）
Operation temperature：23℃≦, 75%RH
Range
Resolution
Accuracy
Overload
protection
200mV
0.1mV
±（0.8%+5d
）
600V rms
2V
1mV
±（0.8%+3d
）
20V
10mV
200V
100mV
600V
1V
±（1.0%+5d
）
AC Voltage：Auto Range

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Range
Resolution
Accuracy
Overload
protection
2V
1mV
±（1.2%+5d
）
600V rms
20V
10mV
200V
100mV
600V
1V
±（1.5%+5d
）
Input impedance：10MΩ
Frequency range：40~400Hz AC
Current：Auto Range
Range
Resolution
Accuracy
Overload
protection
±（4%+20d）
2A
1mA
≦0.4A
400A rms
±（3%+15d）
20A
10mA
±（3%+15d）
≦0.4A
±（2%+10d）
200A
0.1V
±（2%+5d）
400A
1A
Frequency range：40~400Hz
Resistance：Auto Range
Range
Resolution
Accuracy
Overload
protection
200Ω
100mΩ
±（1.2%+5d）
600Vp
2KΩ
1Ω
±（1%+3d）
20KΩ
10Ω

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200KΩ
100Ω
2MΩ
1KΩ
±（1.2%+5d）
20MΩ
10KΩ
±（1.5%+5d）
Continuity：
Range
Resoluti
on
Accuracy
Overload
protection
100mΩ
Built-in buzzer
will sound, if
resistance is
lower than
≦50Ω
600Vp
Open circuit voltage ~ 0.45V Diode：
Range
Resolution
Accuracy
Overload
protection
1mV
Displaying
approximate
forward
voltage of
diode
600Vp
Open circuit voltage ~ 1.48V
Temperature：℃℉/
Range
Resolution
Accuracy
Overload
protection
-40℉~
1832
℉
1℉
-40℉ ℉~32
± （
3%+8d）
600Vp
0℉ ℉~752±
（1%+6d）

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752℉ ℉~1832 ±
（2%+18d）
-40℃~
1000
℃
1℃
-40℃ ℃~0±
（3%+4d）
0℃ ℃~400±
（1%+3d）
400℃ ℃~1000 ±
（2%+10d）
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/ΩJack.
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
WARNING
Beware of Electrocution
Pay special attention to avoid electric shock when
measuring high voltage.

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Do not input the voltage which more than 600V DC.
1) Plug the black test lead into the COM jack and the red
test lead into the V/ΩJack.
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
WARNING
Beware of Electrocution.
Ensure that the test leads are disconnected from the
1) meter before making current clamp measurements. 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
WARNING
Beware of Electrocution.
Ensure that the test leads are disconnected from the meter
before making current clamp measurements.
1) Plug the black test lead into the COM jack and the red test
lead into the V/ΩJack.
2) Set the rotary selector to Ω/ / range position to
make the meter get into AC V range.

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3) Connect the test leads to the ends of the resistance or
circuit for measurement.
4) Take the reading on the LCD.
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.
1) Plug the black test lead into the COM jack and the red test
lead into the V/ΩJack.
2) Set the rotary selector to Ω/ / range position.
3) Press the “SEL” button to switch to 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.
TESTING DIODE
1) Plug the black test lead into the COM jack and the red test
lead into the V/ΩJack.
2) Set the rotary selector toΩ/ / range position.
3) Press the “SEL” button to switch to 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/ΩJack.

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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
WARNING
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 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.
NOTE：
Do not reverse the poles of the batteries.

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©2014 Prokit’s Industries Co., LTD. All rights reserved
2014001(T)