Mastech MS2102 Manual de usuario

MINI CLAMP METER

OFF

COM V

AC/DC RANGE

HOLD

MASTECH

0 10 20 30 40

AUTO

CLAMP METER

MAX 400A

ZERO

CAT II

MAX 600V

ZERO

Auto Range

MS2102

AC/DC

CLAMP METER

MS2102

1. GENERAL INSTRUCTIONS

1.1 Precaution safety measures

1.1.1 Preliminary

1.1.2 During use

1.1.3 Symbols

1.1.4 Instructions

1.2 Maintenance and Cleaning

1.3 Battery replacement

2. DESCRIPTION

2.1 Instrument Familiarization

2.2 LCD Display

2.3 Key pad

2.4 Transformer jaws

2.5 Terminals

3. TECHNICAL SPECIFICATIONS

3.1 General specifications

3.2 Measurement specifications

3.2.1 DC Current (autorange)

3.2.2 AC Current(autorange)

3.2.3 DC Voltage (autorange)

3.2.4 AC Voltage (autorange)

3.2.5 Resistance

3.2.6 Audible continuity

4. OPERATING INSTRUCTION

4.1 AC Current measurement

4.2 DC Current measurement

4.3 DC Voltage measurement

4.4 AC Voltage measurement

4.5 Resistance measurement

4.6 Continuity measurement

with the instrument. Before use, check that they are in

good condition.

1.1.2 During use

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

• If the meter is used near noise generating equipment, be

aware that display may become unstable or indicate

large errors.

• Do not use the meter or test leads if they look damaged.

• Use the meter only as specified in this manual;

otherwise, the protection provided by the meter may be

impaired.

• To avoid damages to the instrument, do not exceed the

maximum limits of the input values shown in the

technical specification tables.

• Check the main function dial and make sure it is at the

correct position before each measurement.

• Use extreme caution when working around bare

conductors or bus bars.

• Never measure current while the test leads are inserted

into the input jacks.

• Accidental contact with the conductor could result in

electric shock.

• Caution when working with voltages above 60Vdc or

30Vac rms. Such voltages pose a shock hazard.

• Never perform resistance or continuity measure-ments

on live circuits.

• Before changing functions, disconnect the test leads

from the circuit under test.

• Keep the fingers behind the protection ring while

measuring.

• Change the battery when the symbol appears to avoid

incorrect data.

1.GENERAL INSTRUCTIONS

This instrument has been designed according to IEC1010

concerning safety requirements for electronic measuring

instruments and hand-held current clamps.

To get the best service from this instrument, read carefully

this user's manual and respect the detailed safety

precautions.

1.1Precautions safety measures

1.1.1 Preliminary

• This device can be used for measurement on category II

installations, for voltages never exceeding 600V (AC or

DC) relative to the earth.

• Definition of overvoltage categories (see IEC 664-1

publication):

CAT II:

MEASUREMENT CATEGORY II is applicable to test

and measuring circuits connected directly to utilization

points (socket outlets and similar points) of the low-voltage

MAINS installation.

CAT III:

MEASUREMENT CATEGORY III is applicable to

test and measuring circuits connected to the distribution

part of the building's low-voltage MAINS installation.

CAT IV:

MEASUREMENT CATEGORY IV is applicable to

test and measuring circuits connected at the source of the

building’s low-voltage MAINS installation.

• When using this clamp meter, the user must observe all

normal safety rules concerning:

- protection against the dangers of electric current.

- protection of the clamp meter against misuse.

• For your own safety, only use the test probes supplied

01 0 2

1.1.3 Symbols:

Symbols used in this manual and on the instrument:

Note-Important safety information, refer to the

instruction manual.

Earth (ground) TERMINAL

Caution, possibility of electric shock

Equipment protected throughout by double

insulation or reinforced insulation.

Application around and removal from UNINSULATED

HAZARDOUS LIVE conductors is permitted.

Direct current

Alternating current

1.1.4 Instructions

• Before opening up the instrument, always disconnect

from all sources of electric current and make sure you

are not charged with static electricity, which may destroy

internal components.

• Any adjustment, maintenance or repair work carried out

on the clamp meter while it is live should be carried out

only by appropriately qualified personnel, after having

taken into account the instructions in this present manual.

• A "qualified person" is someone who is familiar with the

installation, construction and operation of the equipment

and the hazards involved. He is trained and authorized

to energize and de-energize circuits and equipment in

accordance with established practices.

• When the instrument is opened up, remember that some

internal capacitors can retain a dangerous potential even

after the instrument is switched off.

• If any faults or abnormalities are observed, take the

instrument out of service and ensure that it cannot be

used until it has been checked out.

• If the meter is not going to be used for a long time, take

out the battery and do not store the meter in high

temperature or high humidity environment.

1.2Maintenance and Cleaning

To avoid electrical shock or damage to the meter,

do not get water inside the case. Remove the test

leads and any input signals before opening the

case.

Periodically wipe the case with a damp cloth and mild

detergent. Do not use abrasives or solvents.

1.3 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.

WARNING

Do not mix old and new batteries. Do not mix

alkaline, standard (carbon-zinc), or rechargeable

(ni-cad, ni-mh, etc) batteries.

1.3.1 If the sign “ ” appears, it means that the

batteries should be replaced.

1.3.2 Loosen the fixing screw of the battery cover and

remove it.

03 0 4

Note:

Do not reverse the polarity of the batteries.

1.3.3 Replace the exhausted batteries with new ones.

1.3.4 Put the battery cover back and fix it again to its

origin form.

2. DESCRIPTION

2.1 Instrument Familiarization

OFF

COM V

AC/DC RANGE

HOLD

MASTECH

0 10 20 30 40

AUTO

CLAMP METER

MAX 400A

ZERO

CAT II

MAX 600V

ZERO

Auto Range

MS2102

AC/DC

CLAMP METER

7 8

1. Transformer jaws  2. Protection ring

3. Jaw opening trigger 4. ZERO key

5. AC/DC key 6. LCD display

7. COM terminal 8. VΩ terminal

9. RANGE key 10. Function switch

11. HOLD key

2.2 LCD Display

0 10 20 30 40

AUTO

ZERO

Low battery indication

Auto range indication

Zero reading indication

Hold data indication

Continuity function indication

Voltage measurement indication

Current measurement indication

Ohm measurement indication

DC input indication

AC input indication

Polarity indication

Analog bar graph indication

AUTO

ZERO

05 0 6

ZERO

2.3 Keypad

HOLD key:

Fixes the display on the current value and memories it

(short press).

A second short press returns the clamp meter to normal

mode.

AC/DC key:

Selection of the dc (default) or ac mode: press on the key,

the beep sounds briefly.

This key is operative in V range.

ZERO key:

Press Zero key to enter the zero mode, " " annunciate

turn on and Zero the display and the reading is stored as

reference value for subsequent measurement.

Press it again, the " " annunciate blinking and

memorized reference value will display.

Press and hold down Zero key for 2 seconds to exit the

zero mode.

When the meter is under the zero mode, the autorange

function will be disabled.

RANGE key:

Selection of the automatic (default) or manual mode:

short press < 1 sec. on the key, the beep sounds briefly.

Switch from manual to autoranging mode: long press >

1 sec. on the key, the beep sounds briefly.

In manual mode, ranges selection: press successively <

1 sec. on the key.

This key is operative in V and A ranges.

2.4 Transformer jaws

Pick up the current flowing through the conductor

2.5 Terminals

V Ω : terminal receiving the red lead for voltage,

resistance, and continuity measurements.

COM: terminal receiving the black lead for voltage,

resistance, and continuity measurements as a common

reference.

3. TECHNICAL SPECIFICATIONS

3.1 General specifications

• Environment conditions:

Installation categories II,600V max. to earth

Pollution degree: 2

Altitude < 2000 m

Operating temperature:

0~40 °C (<80% RH, non-condensing)

Storage temperature:

-10~60 °C (<70% RH, battery removed)

• Max. Voltage between terminals and earth ground:

600V rms.

Operating principle: dual slop integration

Sample Rate: 2 times/sec for digital data

20 times/sec for analog bar

• Display:

3 3/4 digits LCD display with max. Reading 3999.

42 segments fast analog bar display.

Automatic indication of functions and symbols.

• Range selection: autorange and manual range.

• Over range indication:

LCD will show "OL". If measure value is over 4000V the

LCD will display "OL" (ACV&DCV range).

• Polarity indication: "-" displayed automatically.

• Jaw opening diameter: cables φ28mm.

• Maximum conductor size: φ28mm.

07 0 8

• Low battery indication:

The " " is displayed when the battery is under the

proper operation range.

• Auto power off time:

If there is no key or dial operation for 30 minutes, the

meter will power itself off to save battery consumption.

This function can be disabled by press and hold the

ZERO key then power the meter on.

• Power source: DC1.5V×2 SIZE AAA

• Dimensions: 194(L)×72(W)×35(H)mm.

• Weight: 210g. Approx. (battery included).

• Accessories: User's manual / Test leads / Carry case.

3.2 Measurement specifications

• Alignment marks

MARK

CONDUCTOR

MARKMARK

1. Position the conductor within the jaws at the

intersection of the indicated marks as much as possible

in order to meet this meter's accuracy specifications.

2. If the conductor is positioned elsewhere within the jaws,

the max. additional error resulted is 1.5 %.

• Accuracy:

±(% of reading + number of digits) at 18°C to 28°C (64°F

to 82°F) with relative humidity to 80%.

3.2.1 DC Current (autorange)

3.2.2 AC Current (autorange)

Range Resolution Accuracy

40A 0.01A ±(2.5%+5)

400A 0.1A

Maximum input current: 500A ac up to 60 seconds

Range Resolution Accuracy

40A 0.01A <10A ±(2.5%+10)

400A 0.1A ≥10A ±(2.5%+5)

Frequency Response: <100A: 50-400Hz;

Others: 50-200Hz.

Maximum input current: 500A ac up to 60 seconds

3.2.3 DC Voltage (autorange)

Range Resolution Accuracy

400V 0.1V ±(1.0%+5)

600V 1V

Input impedance: 10MΩ

Maximum input voltage: 600V dc or 600V ac rms.

09 1 0

3.2.4 AC Voltage (autorange)

Range Resolution Accuracy

400V 0.1V ±(1.0%+5)

600V 1V

Input impedance: 10MΩ

Frequency Response: 40~400Hz

Maximum input voltage: 600V dc or 600V ac rms.

3.2.5 Resistance

Range Resolution Accuracy

400Ω0.1Ω±(1.0%+5)

Open circuit voltage: -1.1~ -1.3V

Overload protection: 250V dc or 250V ac rms.

3.2.6 Audible continuity

Range Continuity beeper

≤40Ω

Open circuit voltage: -1.1~ -1.3V

Overload protection: 250V dc or 250V ac rms.

4. OPERATING INSTRUCTION

• If the current under measurement is higher than the

selected value for a long period, overheating may take

place, compromising the safety and operation of inner

circuits.

• Do not measure currents on high-voltage conductors

(>600V) to avoid risks of discharge and/or incorrect

readings.

4.1 AC Current measurement

Make certain that all test leads are disconnected

from the meter terminals.

• Set function switch to the A range.

• Press "AC/DC" key to select " AC" function.

• Clamp the current transducer (jaw) around one of the

conductors under test. Make sure that the clamp jaw be

perfectly closed.

• Read the display value.

11 1 2

4.2 DC Current measurement 4.3 DC Voltage measurement

Make certain that all test leads are disconnected

from the meter terminals.

Open and close the clamp jaw several times to

demagnetize the clamp jaw before taking any DC

current measurement.

• Set function switch to the A range.

• Press "AC/DC" key to select "DC" function.

• Press "ZERO" key to enter the zero mode.

• Before measuring current large than 40A, adjust the

scale to 400A range by press the "RANGE" key then

perform auto zero operation.

• Clamp the current transducer (jaw) around one of the

conductors under test. Make sure that the clamp jaw be

perfectly closed.

• Read the display value.

Maximum input voltage of DCV range is 600Vdc.

Do not attempt to take any voltage measurement

that exceeds 600Vdc to avoid electrical shock

and/or damage to the instrument.

• Set function switch to the V range.

• Press "AC/DC" key to select " DC" function.

• Connect the black and red test leads to the COM and VΩ

terminals respectively.

• Connect the test leads to the circuit being measured and

read the displayed value.

13 1 4

4.4 AC Voltage measurement 4.5 Resistance measurement

Maximum input voltage of ACV range is 600Vrms.

Do not attempt to take any voltage measurement

that exceeds 600Vrms to avoid electrical shock

hazard and/or damage to the instrument.

Before taking any in-circuit resistance

measurement, remove power from the circuit

being tested and discharge all capacitors.

• Set the function switch to the V range.

• Press " AC/DC" key to select " AC" function.

• Connect the black and red test leads to the COM and VΩ

terminals respectively.

• Connect the test leads to the circuit being measured

and read the displayed value.

• Set the function switch to range.

• Connect the black and red test leads to the COM and V

terminals respectively.

• Connect the test leads to the circuit being measured

and read the displayed value.

15 1 6

4.6 Continuity measurement

Before taking any in-circuit measurement, remove

power from the circuit being tested and discharge

all capacitor in the circuit.

Using this appliance in an environment with a strong

radiated radio-frequency electro-magnetic field

(approximately 3V/m), may influence its measuring

accuracy. The measuring result can be strongly

deviating from the actual value.

• Set the function switch to range.

• Connect the black and red test leads to the COM and V

terminals respectively.

• Connect the test leads to the resistance in the circuit

being measured.

• When the test lead to the circuit is below 40Ω, it will be

indicated by a continuous beeping.

• Note: continuity test is available to check open/short of

the circuit.

CAUTION

17 R-00-05-XXXX

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