Prokit's Industries MT-3102 User Manual

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

User’s Manual

st

Edition, 2010

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©2010 Copy Right by Prokit’s Industries Co., Ltd.

3 1/2 2A Mini Digital Clamp Meter user manual

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

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

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：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

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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.

ELECTRICAL SPECIFICATIONS

Accuracy：±（%reading + digits）
Operation temperature：23 , 75%RH℃≦

Range Resolution Accuracy Overload

protection

200mV 0.1mV ±（0.8%+5d）
2V 1mV
20V 10mV

±（0.8%+3d）

600V rms

200V 100mV
600V 1V ±（1.0%+5d）

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3 1/2 2A Mini Digital Clamp Meter user manual

AC Voltage：Auto Range

Range Resolution Accuracy Overload

protection
2V 1mV
20V 10mV
200V 100mV

±（1.2%+5d）

600V rms

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≦

±（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：

Range Resoluti

on

100mΩ Built-in buzzer

Accuracy Overload

protection

will sound, if
resistance is

600Vp

lower than

50Ω≦

Open circuit voltage ~ 0.45V
Diode：

Range Resolution Accuracy Overload

protection

1mV Displaying

approximate
forward

600Vp
voltage of
diode

Open circuit voltage ~ 1.48V
Temperature： /℃℉

Range Resolution 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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