Mastech MS2010B Manuel utilisateur

AC Leakage Current Clamp Meter

Instruction Manual

Contents

．

Safety information

1-1.Safety precaution

1-2. Symbols

2. Meter illustration

2-1. Panel description

2-2. LCD display

3. Specification

3-1. General feature

3-2 Electric specification

. Operating instruction

-1 LPF using

-2 Data HOLD

-3 Range Switching

- Function selection

-5 Maxim value

-6 Back Light

-7 Sleep Mode

5. Measurement operating

5-1. AC Current measurement

5-2. Leakage current measurement

5-3. DC /AC Voltage measurement

5- . Frequency & Duty cycle measurement

5-5. Resistance measurement

5-6. Diode check

5-7. Continuity check

- 3 -

5-8 .Capacitance measurement

5-8. Temperature measurement

6. Maintenance

6-1 Battery replace

6-2 Fuse replace

6-3. Cleaning and Decontamination

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 IEC1010-1 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 su

nlight, 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

Ground

（

Alternating

current

）

Warning see

explain in manual

DC (Direct

Current)

Double insulation

2. Meter illustration

3 9 9 9

Fig.1 MS2010B Front arrangement

- 5 -

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:

. 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

．

‘RANGE’ button: Change Auto or Manual mode

．

‘FUNC’ button : Change function mode

．

‘LPF’ button: Used as Low Pass Filter ON/OFF switch.

．

‘INPUT’ terminal

12. ‘COM’ terminal

13. ‘REL’ push button: Relative measurement mode

- 6 -

2-2. LCD display

Alternating current/ voltage

Directive current/voltage

Diode

Buzzer

Auto rangi

ng mode

Relative measurement

Use

LPF

No use LPF

Data hold

Low battery indicator

Duty cycle

，

Voltage unites

，

Current unites

℃

Temperature unite

，

µF

Capacitance unite

Ω

，

kΩ

，

MΩ

Resistance unites

，

kHz

Frequency unites

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

● 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: 2times/s

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

℃ ℃

● Operating temperature & Humidity: 0 to 0 ; < 80% RH

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

℃ ℃

● Dimension(L x W x H) & Wight : 260 x 92 x 55mm; Approx. 00g

- 8 -

3-2

．

Electrical Specification

[1] AC Current

Range Resolution Accuracy

0mA 0.01mA

（

50 ~ 60Hz

）

(30~50Hz,

00mA 0.1mA

（

1%rdg+8dgt

）

60~10KHz)

No available

A 1mA

0A 10mA

00A 100mA

600A 1A ±

（

1.5%rdg+3dgt

）

[2] AC Voltage

Range Resolution Accuracy

00mV 0.1mV

（

50 ~ 60Hz

）

（

0.8%rdg+5dgt

）

(30~50Hz,

60~10KHz)

±(2%rdg+10dgt)

V 1mV

0V 10mV

00V 0.1V

600V 1V

- 9 -

[3] DC Voltage

Range Resolution Accuracy Input impedance

200mV 0.1mV

V 1mV

0V 10mV ±

（

0.7%rdg+3dgt

）

10MΩ

00V 0.1V

600V 1V ±

（

0.8%rdg+5dgt

）

[ ] 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.

（

-1

）

Current measurement range

Range Resolution Accuracy Over load protection

10Hz 0.001Hz ±

（

2%rdg+5dgt

）

250V DC or AC rms

(by PTC protection

circuit)

100Hz 0.01Hz

（

1.5%rdg+5dgt

）

1000Hz 0.1Hz

2KHz 1Hz

>2KHz No available

1 to 99% 0.1% ±3%

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

- 10 -

( -2) Voltage measurement range

Range Resolution Accuracy Over load protection

10Hz 0.001Hz ±

（

2%rdg+5dgt

）

250V DC or AC rms

(by PTC protection

100Hz 0.01Hz

1000Hz 0.1Hz ±

（

1.5%rdg+5dgt

）

circuit)

10KHz 1Hz

100KHz 10Hz ±

（

2%rdg+5dgt

）

>100KHz No available

1 to 99% 0.1% ±3%

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

[5] Resistance

Range Resolution Accuracy Over load protection

00Ω 0.1Ω

（

1%rdg+2dgt

）

250V DC or AC rms

(by PTC protection

circuit)

KΩ 1Ω

0KΩ 10Ω

00KΩ 0.1KΩ

MΩ 1KΩ

0MΩ 10KΩ ±

（

2%rdg+5dgt

）

- 11 -

[6] Capacitance measurement

Range Resolution Accuracy Over load

protection

0nF 0.01nF

00nF 0.1nF

（

%rdg+5dgt

）

250V DC or AC rms

(by PTC protection

circuit)

uF 1nF

0uF 0.01uF

100 uF 0.1 uF

[

7] Temperature

Range Resolution Accuracy

-20

℃

1000

℃

-20

℃

to 0

℃

：

（

5.0%rdg+5dgt

）

℃

to 00

℃

：

（

1.0%rdg+3dgt

）

℃

to 1000

℃

：

（

2.0%rdg+3dgt

）

[6] Diode check

Test current : 1mA.

[7] Continuity

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

Open circuit voltage: 1.2V.

4. Operating instruction

-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.

- 12 -

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.

-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.

-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.

- . 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 / .

℃ ℃

-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.

- 13 -

-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.

-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.

5. Measurement operating

5-1. AC Current measurement

．

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

. Read current value on the LCD display.

- 1 -

Not:

（

）

Use the Low Pass Filter by pushing “LPF” button if necessary.

（

）

When measurement the current of transmission line, must be clamp

one line only between the two transmission ine .

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.

5- . Frequency & Duty cycle measurement

To measure the frequency or Duty cycle of induced current

from the

- 15 -

clamp jaw, done according to following procedure.

1. Set rotary switch to the 0/ 00mA, /. 0A or 00A 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- (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 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

- 16 -

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.

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

● If diode is good, the display shows ‘OL’

。

- 17 -

● 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 to the “INPUT” terminal, and then black test

lead to 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.

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

- 18 -

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.

. To change the temperature physical unite(

℃

) , you can press

the ‘FUNC’ push button.

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.

（

）

Disconnect and remove all test probes from any live source and

meter.

（

）

Open the battery cover on the bottom case by screwdriver.

（

）

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.

–END-

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