MS2010B

AC Leakage Current Clamp Meter

Instruction Manual

40

400

4

40

MS2010B

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Hz/%

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1. Safety information

The meter is a handheld and battery operated Digital AC Clamp

Meter with multi function. This clamp meter has been designed to meet IEC61010-1 and CAT III over Voltage category.

Warning

To avoid possible electric shock or personal injury and possible damage to the meter or the equipment under test, you are must be adhere to the following rules.

1-1.Safety cautions

•

User must be read the operating instructions thoroughly and

completely before operating your meter. Pay particular attention

to WARNING, which will inform you of potentially dangerous

procedures.

•

Do not apply more than the rated voltage ,of marked on the meter,

between the “INPUT” terminal and “COM” terminal.

•

Do not expose the instrument to direct sunlight, extreme

temperature and moisture or dew full.

•

You always are careful when working with voltage above 60V DC

or 30V AC rms.

•

Keep fingers behind the clamp barrier while measuring current..

•

Always inspect the test lead for damaged insulation or exposed

metal.

1-2. Symbols

Note international Electrical Symbol.

Dangerous Voltage

AC

(Alternating current)

DC (Direct Current)

Ground

Warning see explain in manual

Double insulation

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2. Meter illustration

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400

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MS2010B

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Hz/%

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2-1 Panel description

1. Clamp jaw ; it is as current

transformer(CT) when measuring

current flowing through the

conductor.

2. Trigger

3. Clamp Barrier:

4. LCD display

5. “H/*” button : Hold & Back Light

When push this button, the

display will keep the last reading.

Once push again, the Meter will

return the normal mode.

6. Knob: it is rotary switch for

select function.

7. “Hz/%” button: Frequency &

Duty cycle mode

8. “RANGE” button: Change Auto

or Manual mode

9. “FUNC” button : Change function

mode

10. “LPF” button: Used as Low

Pass Filter ON/OFF switch.

11. “INPUT” terminal

12. “COM” terminal

13. “REL” push button:

Relative measurement mode

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2-2. LCD display

AC

DC

AUTO

REL

LPF

LPF

HOLD

Alternating current/ voltage

Directive current/voltage

% mV, V

Diode

Buzzer

mA, A

C° nF, µF

Auto ranging mode

Ω, kΩ, MΩ

Relative measurement

Hz, kHz

Use LPF

Duty cycle

Voltage unites

Current unites

Temperature unite

Capacitance unite

Resistance unites

Frequency unites

No use LPF

Data hold

Low battery indicator

3. Specification

3-1. General feature

•

Auto ranging Digital Clamp Meter. But the meter may select

manual Function mode by “RANGE” button.

•

3 1/2 digit (200 count) LCD display

•

Over load indication: “OL” symbol will displayed on the LCD.

•

Jaw opening capability: 32mm

03

•

Low battery indication: battery symbol is appears on the LCD.

•

Auto power OFF: If the meter is idle for more than 15 minutes,

the meter automatically turns the power off.

•

Sampling rate: 2 times/s

•

Power supply: 1.5V battery (AAA type) x 3pcs.

•

Operating temperature & Humidity: 0°C to 40°C; <80%

•

Storage temperature & Humidity: -10°C to 50°C; <70%RH

•

Dimension (L x W x H) & Wight : 260 x 92 x 55mm; Approx. 400g

3-2. Electrical Specification

[1] AC Current

Range

40mA

400mA

4A

40A

400A

600A

Resolution

0.01mA

0.1mA

1mA

10mA

100mA

1A

[2] AC Voltage

Range Resolution

400mV

4V

0.1mV

1mV

40V

400V

600V

10mV

0.1V

1V

[3] DC Voltage

Range Resolution

400mV

4V

0.1mV

1mV

40V

400V

600V

10mV

0.1V

1V

Accuracy

(50 ~ 60Hz) (30~50Hz,60~10KHz)

±(1%rdg+8dgt)

±(1.5%rdg+3dgt)

Accuracy

(50 ~ 60Hz) (30~50Hz,60~10KHz)

±(0.8%rdg+5dgt)

Accuracy

±(0.7%rdg+3dgt)

±(0.8%rdg+5dgt)

No available

±(2%rdg+10dgt)

Input impedance

10MΩ

[4] Frequency & Duty cycle measurement

The meter is may be measuring the frequency and duty cycle in the

AC current range or AC voltage range by press the 'Hz/%' push key.

Frequency range is 1Hz to 2KHz in the current range, and then

1Hz to 100KHz in the voltage range.

(4-1) Current measurement range

Range

10Hz

100Hz

1000Hz

Resolution

0.001Hz

0.01Hz

0.1Hz

Accuracy Over load protection

±(2%rdg+5dgt) 250V DC or AC rms

±(1.5%rdg+5dgt)

(by PTC protection circuit) 2kHz

>2kHz

1Hz

No available

1 to 99% 0.1%

***Sensitivity is >AC 10mA(rms)

±3%

(4-2) Voltage measurement range

Range Resolution Accuracy

10Hz 0.001Hz

±(2%rdg+5dgt)

100Hz

1000Hz

10kHz

100kHz

0.01Hz

0.1Hz

1Hz

10Hz

±(1.5%rdg+5dgt)

±(2%rdg+5dgt)

>100kHz

1 to 99% 0.1%

No available

±3%

***Sensitivity is >AC 0.1V (rms)

[5] Resistance

Range

400Ω

4KΩ

40KΩ

400KΩ

4MΩ

40MΩ

Resolution

0.1Ω

1Ω

10Ω

0.1KΩ

1KΩ

10KΩ

Accuracy

±(1%rdg+2dgt)

±(2%rdg+5dgt)

Over load protection

250V DC or AC rms

(by PTC protection circuit)

Over load protection

250V DC or AC rms

(by PTC protection circuit)

04 05

[6] Capacitance measurement

Range

40nF

400nF

4µF

40µF

100µF

Resolution

0.01nF

0.1nF

1nF

0.01µF

0.1µF

Accuracy

±(4%rdg+5dgt)

Over load protection

250V DC or AC rms

(by PTC protection circuit)

[7] Temperature

Range

-20°C to

1000°C

Resolution

1°C -20°C to 0°C

0°C to 400°C

Accuracy

400°C to 1000°C

: ±(5.0%rdg+5dgt)

: ±(1.0%rdg+3dgt)

: ±(2.0%rdg+3dgt)

[8] Diode check

Test current : 1mA

[9] Continuity

If the resistance under testing circuit less than 70Ω, buzzer will sound.

Open circuit voltage: 1.2V.

4. Operating instruction

4-1 LPF usage

The meter have Low- Pass-Filter to reduce the influence of high frequency noise above 1KHz(3db). This LPF feature is available in all AC Voltage or AC Current measurement mode.

The “LPF” button is act as ON/OFF switch for LPF circuit connection. When LPF is activated, Most of noise above 1KHz will decay greatly. So we can obtain more stable and accurate readings on low frequency response.

4-2 Data HOLD

The push key is used to maintain the measurement data unchanging.

Press “HOLD” push key to inter and exit the hold mode in any mode. That act with trigger. The meter will resume the normal measurement mode by pressing the key again.

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4-3 Range switching

“RANGE” button is the auto/manual measurement push key that act with trigger. The default is auto measurement when power on.

Press this key once, will switch to manual measurement mode, and then press once again, will switch to auto measurement mode.

4-4 Function switching

“FUNC” key is used as the function selection key that acts with trigger. Use the key as switch of DC/AC, Diode/ Continuity and

°C/°F.

4-5 Maximum value hold

“MAX” key is act with trigger. Press this key once, the maximum value is holding(will Displays “MAX” symbol on the LCD), and the press once again, will switch to normal Measurement mode.

After pressing the key, A/D will keep working, and the display value are always up dated and keep the maximum value.

4-6 Back Light

“ ” Push key is used control Black Light. When press this key and held more than 2sec, will enable Back Light for 15secs.

Press the key again within 15secs, back light will disable.

4-7 Sleep mode (Auto power OFF)

If the meter is idle for more than 15minutes, the meter automatically turns the power off.

In this sleep mode, the meter is save battery energy.

In the sleep mode, the meter may be turns normal operating mode by “RANGE”, “MAX”, “ ” Key and rotary switch.

There are two ways to disable the sleep mode as following:

(1) In the auto power off state , you are pushing “HOLD” key.

(2) Push and held “HOLD” key, turn on power by rotary switch

at the same time.

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5. Measurement operating

5-1 AC Current measurement

1. Set the rotary switch to the desired “A~” position.

2. Press the clamp trigger to open jaw and to clamp one conductor

only, making Sure that the jaw is firmly closed around the

conductor.

3. Set the conductor in that flow the measured current to centre

position of jaw as far as Possible. In this time, measurement

accuracy is best.

4. Read current value on the LCD display.

Not: (1) Use the Low Pass Filter by pushing “LPF” button if

necessary.

(2) When measurement the current of transmission line, must

be clamp one line only between the two line .

5-2 Leakage current measurement

This meter can measure the leakage current on the one-phase or three-phase circuit equipment as well as the conductor in that flow the leakage current.

1. Set the rotary switch to the 20mA~ range.

2. Clamp the conductor in that flow the leakage current, and the

read the leakage 0current value on the LCD display.

5-3 DC/AC Voltage measurement

1. Set the rotary switch to the “V” position. The DC mode is default

mode. To switch to the AC measure mode must be press once

time the “FUNC” button.

2. Insert the red test lead in to the “INPUT” terminal and the black

test lead into the “COM” terminal.

3. Connect the test lead across with the object being measured.

The measured value will be show on the LCD display.

Note:

When DC or AC voltage measurement has been completed,

disconnect the connection between the test lead and circuit

under test.

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5-4 Frequency & Duty cycle measurement

To measure the frequency or Duty cycle of induced current from the clamp jaw, done according to following procedure.

1. Set rotary switch to the 40/400mA, 4/.40A or 400A position.

2. Press the clamp trigger to open jaw and clamp a conductor in

that flowed Measured current, making sure that the jaw is firmly

closed around the conductor.

3. Press the “Hz/%” push key to into the Frequency mode or Duty

cycle mode.

Measured value will be displayed on the LCD.

To measure the frequency or duty cycle of AC voltage that measured in the “ V” range, one as following:

1.Set rotary switch to the “V” position.

2.Done section 5-4 (2) ~(3) procedure.

5-5 Resistance measurement

1. Set the rotary switch to the “

Ω

” position.

2. Insert the red test lead into the “INPUT” terminal and the black

test lead into the “COM” Terminal.

3. Connect the test lead across with the object being measured.

The measured value will be show on LCD display.

Note:

•

The test lead can add 0.1Ω to 0.2Ω of error to resistance

measurement. To obtain precision reading in low-resistance

measurement, that is the range of 200Ω, short the input terminal

with the test lead probe, and then read out the contact resistance

of test lead. After measuring you can subtract the readied contact

resistance value from the reading value.

•

For high resistance measurement (>10MΩ), it is normal taking

several seconds to obtain stable reading.

•

If The LCD display “OL” symbol, it is indicating open circuit for the

tested resistor or the resistance value of resistor is higher than

the maximum range of the meter.

5-6 Diode check

The diode check function used to check diode, transistor and other semiconductor device.

In the diode testing, the meter sends a current through the semiconductor junction, and then measure the voltage drop across the junction. A good silicon junction will drop between 0.5V to 0.8V.

1. Set the rotary switch to the “

Ω

” position and then

press the “FUNC” push key to into diode check mode.

2. Insert the red test lead into the “INPUT” terminal and the black

test lead into the “COM“ terminal.

3. For forward voltage drop reading on any semiconductor

component, place the red test lead on the component anode and

place the black test lead on the component cathode.

The measured forward drop voltage will show on the LCD display.

4. Reverse the test lead and measure the voltage across the diode again.

•

If diode is good, the display shows “OL”.

•

If diode is shorted, the display shows “0” (zero) in both direction.

•

If display shows “OL” in direction, the diode is open.

5-7 Continuity check

Set the rotary switch to the “

Ω

” position.

1.Press the “FUNC” push button to switch into continuity check mode.

2. Insert the red test lead into the “INPUT” terminal and the black

test lead into the “COM” Terminal.

3. Connect the test lead across with the object being measured.

If the resistance of a circuit under test is less than 50Ω,

the buzzer will sound.

5-8 Capacitance measurement

Warning

To avoid damage to the meter or to the equipment under test,

disconnect power and discharge all high-voltage capacitors

before measuring capacitance.

You can use the DC voltage function to confirm that the

capacitor is discharged.

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Capacitance ranges are 50.00nF, 500.0nF, 5.000uF, 50.00uF,

200.0uF.

To measure capacitance, connect the Meter as follows:

1. Set the rotary switch to “ ” position.

2. Insert the Capacitor under test to the “INPUT” terminal and

“COM” terminal.

The measured value will be displayed on the LCD disp

5-9 Temperature measurement

Note:

•

MS3202 Multi-Function Socket is used as temperature adapter.

•

Use K-type thermocouple probe.

1. Set the rotary switch to the “TEMP” position.

2. In this time, LCD will display the environment temperature.

3. Insert the MS3202 temperature adapter to the “INPUT” and

“COM” terminal , and then Insert the K-type thermocouple probe

to the MS3203 temperature adapter according to its polarity.

4. To change the temperature physical unite(°C or °F) , you can

press the “FUNC” push button.

6. Maintenance

6-1 Replacing the Battery

When meter display low battery indicator(symbol) on the LCD, you must be replace the battery to maintain normal operation.

(1) Disconnect and remove all test probes from any live source and

meter.

(2) Open the battery cover on the bottom case by screwdriver.

(3) Remove old battery and snap new one into the battery holder.

6-2 Fuse replacement

Replacing the defective fuse should done according to 6-1section procedure.

6-3 Cleaning and Decontamination

The meter can be cleaned with soft clean cloth to remove any oil, grease or grim.

Do not use the liquid solvent or detergent.

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