Mastech MS2002 Instrucciones de montaje

OPERATOR’S

INSTRUCTION MANUAL

DIGITAL CLAMP METER

600

200

HOL D

CLA MP METE R

LIGHT ON/OFF

Digital Clamp Met er

220 200

kHz

COM

CAT.II

MAX 6 00V

CONTENTS CONTENTS

1. .. .......................1General instruction ..

2.1 ..............................1Precautions for us ......

2.2 ........................................2Safety symbols

2.3 ............................................2Maintenance

2. Description........................................1

3.1 .................................... ....3Meter panel ......

3.2 ...... .........5LCD display ..............................

3.3 .. ............ .....6Functional keys . ...................

3.4 .................... ........ .6Transformer jaws ....... .

3.5 ... .................. ....6 Input socket .. .................

4. .............. .....7Technical index ..............

4.1 . .................. .... .......7General index . ........ ...

4.2 ................................. ......8Accuracy index .

5.1 ..............10AC Current (ACA) measurement

5.2 .............12DC Voltage (DCV) measurement

5.3 ..............13AC Current (ACV) measurement

5.4 ................ ..14Resistance ( ) measurementΩ.

5.5 .......................... .15Audible continuity test....

6.1 ........................... .16Maintenance ...............

DIGITAL CLAMP METER DIGITAL CLAMP METER

........ . ......3

Each component

name description .... .

5. .......... .... .10Operating Instructions ..... ..

6. .......... .... .16Meter Maintenance ..... ........

6.2 ................. .16Battery replacement ...............

01 02

1. General instructions

This digital clamp meter has been designed according

to International Electro Safety Standard IEC-61010

concerning safety requirements for electronic

measuring instruments and hand-held current clamps;

meeting the requirements for 600CAT.II of IEC-61010

and grade 2 for pollution.

Before using this meter, please read carefully this

user's manual and respect the related safety precautions.

2.1 Precautions for use

• Before measurement, warm up for at least 30 seconds.

• Don’t use the meter or lead if they look damaged.

• To meet the safety requirements, only use the test

leads supplied with the meter. If the test lead should

be replaced, a new one with the same model or same

electric specification should be adopted.

• If the meter is placed in a relatively noisy environment,

meter readings will become unstable, even with big

errors.

• Before changing the measuring range, you must

ensure that the test lead is not connected to any

circuit to be tested.

• When you can’t determine the size range of signal to

be tested, please switch the measuring range to the

maximum position.

• When you use the meter to measure, you should make

the test lead and the rotary switch in the correct position.

• When use the test lead to measure, you should keep

the fingers behind the protection ring.

DIGITAL CLAMP METER DIGITAL CLAMP METER

2. General instructions

•

RMS, please operate carefully to prevent electric shock.

• Do not exceed the input limit specified in each

measuring range to prevent the meter to be damaged.

• When measuring current, the test lead can not be

inserted into the input socket.

• When you hold the clamp meter to measure, you

should keep the fingers behind protection ring of

meter body.

• Before on-line resistance measurement, you should

turn off the power for all circuits and discharge all

capacitors.

• Change the battery as early as possible when the“ ”

symbol appears to avoid incorrect reading.

When the voltage to be tested exceeds 60VDC or 30VAC

2.2 Safety symbols

Symbols used on the meter and in this manual:

Important cautions, refer to the

instruction manual.

Earth

Double insulation (safety equipment

with category II)

2.3 Maintenance

•

professionals.

• To prevent contamination or electrostatic damage

inside the meter, before opening the meter case,

appropriate protective measures should be taken.

• If you notice any abnormality, the meter should be

turned off and sent for repair immediately.

Maintenance and calibration should be done by

03 04

DIGITAL CLAMP METER DIGITAL CLAMP METER

• If the casing is not covered properly, screws are not

tightened, do not put it to use.

• When it is not in use for a long time, please remove

the battery and avoid storing it in the place with high

temperature and humidity.

3. Each component name description

3.1 Meter panel

600

200

HOLD

CLAMP METER

LIGHT ON/OFF

Digital Clamp Meter

220 20 0

kHz

COM

CAT.II

MAX 600V

(1)

(2)

(3)

(4)

(5)

(6)

(7) Ω

(8)

(9)

(10)

Transformer jaws

Protection ring

Jaw opening trigger

LIGHT key

LCD display

COM input socket

V input socket

ON/OFF key

Rotary switch

HOLD key

Low battery indication

Hold data indication

Continuity function indication

Voltage measurement indication

Current measurement indication

Ohm measurement indication

DC input indication

AC input indication

Negative polarity indication

05 06

DIGITAL CLAMP METER DIGITAL CLAMP METER

220 200

3.2LCD display 3.3 Functional keys

HOLD key:

• Press this key; LCD display will keep the test value.

• Press this key again, the meter will return to normal mode.

ON/OFF key:

• This key is used to turn the meter on or off.

LIGHT key:

• Holding this key for 3 seconds to turn the backlight on, press it

again, the backlight is auto-off.

3.4 Transformer jaws

• Pick up live conductor to induce AC current signals.

3.5 Input socket

• V

resistance measurement and audible continuity test

(connected with red lead).

• COM input socket: Negative terminal of voltage,

resistance measurement and audible continuity test

(connected with black lead).

Ω input socket: Positive terminal of voltage,

07 08

4. Technical index

DIGITAL CLAMP METER DIGITAL CLAMP METER

4.1 General index

• Environmental conditions for using:

Temperature and relative humidity of working

environment: 0~40 ˚C (<80%RH).

• Temperature and relative humidity of storage

environment: -10~60 ˚C (<70%RH, removing battery).

• Maximum voltage between any input socket

and earth: 600Vrms.

• Principle of measurement: double integral A/D

conversion.

• Sampling rate: about 2 times/second.

• Display: 3 1/2 digits LCD display with max.

reading 1999.

• Automatically indicate unit and symbol according to

function level.

• Measuring range switch method: manually

• Over measuring range indication: “OL” will display on

LCD. When the input measuring voltage exceeds

2000V, “OL” will display on the LCD (ACV and DCV).

• Input polarity indication: “–” symbol will display

automatically.

• Low battery indication: When the low battery is lower

than the normal operating voltage,“ ”will display on

the LCD.

• Battery: DC 1.5V X 2 SIZE AAA

• Max. opening dimension of transformer jaws: φ28mm.

• Max. dimension of conductor: φ28mm.

• Dimension: 194(L)×72(W)×35(H)mm.

• Weight: about 200g (with battery).

• Accessories: Instruction Manual, leads, package bag

and package box.

MARK

CONDUCTOR

MARK

4.2Accuracy index

Accuracy: ±( % reading + the number of characters),

gurantee for one year.

Base condition: ambient temperature is from

18˚C to 28˚C, relative humidity is not greater than 80%

• When making AC current measurement, please position

the conductor to the center If the conductor is not

positioned at the center, the max. additional error

resulted is 1.5%.

09 10

Please make sure that all test leads are

removed from the input socket.

The current of the conductor with high voltage

(>600V) is not allowed for measurement to

prevent electrical shock.

WARNING

DIGITAL CLAMP METER DIGITAL CLAMP METER

Accuracy

Resolution

range

±(2% of rdg

+ 20 )characters

20A

200A

0.001A

0.01A

0.1A

- Frequency range: 50/60Hz

4.2.1 AC Current

4.2.3 AC Current

4.2.2 DC Voltage

Accuracy

Resolution

Range

200V

600V

0.1V

1V ±(1% of rdg + 5 )characters

- Input impedance: 10MΩ

-Maximum input voltage: 600V DC or 600V AC RMS.

Accuracy

Resolution

Range

200V

600V

0.1V

1V ±(1.5% of rdg + 5 )characters

Input impedance: 10M

Frequency response: 40~400Hz

Maximum input voltage: 600V DC or 600V AC RMS.

4.2.4 Resistance

Accuracy

Resolution

Range

200Ω1Ω±(1% of rdg + 5 )characters

Open-circuit voltage: Less than 700mV

Overload protection: 250V DC or 250V AC RMS.

4.2.5 Audible continuity

Resolution

Range

Inbuilt buzzer will alarm when the

resistance is lower than 70Ω

Open-circuit voltage: below 700mV

Overload protection: 250V DC or 250V AC RMS.

5. Operating Instructions

5.1 AC Current (ACA) measurement

• Turn the rotary switch to position A in the desired range.

• Pull the trigger, clamp the wire to be measured

(one line) in the center of transformer jaws (shown as

below figure) and make transformer jaws fully closed.

• The measurement current value can be read through

the LCD display.

• If only “OL”shows on the display, it means overload,

and a higher measuring range should be selected

immediately.

11 12

DIGITAL CLAMP METER DIGITAL CLAMP METER

CORRECT

INCORRECT

5.2DC Voltage (DCV) measurement

Maximum input voltage of DC voltage (DCV) is

600VDC. DC voltage higher than 600Vdc is not

allowed for measurement to prevent electrical

shock and / or damage the meter.

WARNING

• Turn the rotary switch to 600V .

• Connect black test lead and red test lead to COM input

socket and V input socket separately.

• Use the other two ends of test leads to measure the

voltage of circuit to be measured. (Connect with the

circuit to be measured in parallel)

• The measurement current value can be read through

the LCD display.

13 14

DIGITAL CLAMP METER DIGITAL CLAMP METER

5.3 AC Voltage (ACV) measurement

Maximum input voltage of AC current (ACV) is

600Vrms. AC voltage higher than 600Vrms is

not allowed for measurement to prevent

electrical shock and / or damage the meter.

WARNING

• urn the rotary switch to 600V~.

• Connect black test lead and red test lead to COM

input socket and V input socket separately.

• Use the other two ends of test leads to measure the

voltage of circuit to be measured. (Connect with the

circuit to be measured in parallel)

• The measurement voltage value can be read through

the LCD display.

5.4 Resistance ( ) measurement Ω

Before making online resistance measurement,

make certain that all test circuits are

disconnected and discharge all capacitors.

WARNING

• Turn the rotary switch to

• Connect black test lead and red test lead to COM input

socket and V input socket separately.

• Use the other two ends of test leads to measure the

resistance of circuit to be measured.

• The measurement voltage value can be read through

the LCD display.

15 16

DIGITAL CLAMP METER DIGITAL CLAMP METER

5.5Audible continuity test

Before making online resistance measurement,

make certain that all test circuits are

disconnected and discharge all capacitors.

WARNING

• Turn the rotary switch to

• Connect black test lead and red test lead to COM

input socket and V input socket separately.

• Use the other two ends of test leads to make

continuity test.

• When making continuity test, if the resistance of

circuit to be measured is less than 70 , buzzer will

alarm continuously.

Continuity (audible) No continuity

6. Meter Maintenance

6.1 Maintenance

Before opening the back cover, you should

power off and make sure that the test lead is

disconnected from the measurement circuit to

avoid electric shock.

WARNING

Use a piece of damp cloth and a small amount of

detergent to clean the meter regularly, do not use

chemical solvent to clean the meter.

6.2 Battery Replacement

Before opening the battery cover, power off and

make certain that all test leads are

disconnected from the testing circuits to avoid

electric shock.

WARNING

Follow these steps to replace the battery:

• When the battery voltage is lower than the normal

operating voltage, low battery symbol“ ”will display

on the LCD display. At this moment, the battery should

be replaced.

• Press the power switch to cut off the meter power supply.

• Unscrew the screws on the battery cover, remove the

old battery and replace it with a new AAA 1.5V battery.

• Install the bottom shell back and tighten the screws.

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