Mastech MS2001 Istruzioni per il montaggio

OPERATOR’S

INSTRUCTION MANUAL

DIGITAL CLAMP METER

CONTENTS PAGE

SAFETY INFORMATION ….……………………..…………...

SAFETY SYMBOLS ..………………………………….….…..

SAFETY PRECAUTIONS ………………………………..…

MAINTENANCE .………..……………………………..…….

GENERAL DESCRIPTION …..…..………………………....

FRONT PANEL DESCRIPTION …..………..………..…….

OPERATING INSTRUCTIONS .………..……………..…….

SPECIFICATIONS ..…...……………………..………...……..

REPLACING THE BATTERY .....…………….…….……..….

ACCESSORIES ...………..…………………………………….

SAFETY INFORMATION

The digital clamp meter has been designed according to IEC1010–

1 and IEC1010–2–032 concerning safety requirements for

electrical measuring instruments and hand – held current clamps

with overvoltage category 1000V CAT II 600V CAT III and pollution

SAFETY SYMBOLS

Important safety information, refer to the operating manual.

Dangerous voltage may be present.

Earth ground.

Double insulation ( Protection class 1000V CAT II 600V

CAT III ).

The digital clamp meter complies with the requirements of the

following European Community Directives: 89/336/EEC ( Elec-

tromagnetic Compatibility ) and 73/23/EEC ( Low Voltage ) as

amended by 93/68/EEC ( CE Marking ).

However, electrical noise or intense electromagnetic fields in the

vicinity of the equipment may disturb the measurement circuit.

Measuring instruments will also respond to unwanted signals that

may be present within the measurement circuit.

Users should exercise care and take appropriate precautions to

avoid misleading

-1-

SAFETY PRECAUTIONS

Follow all safety and operating instructions to ensure maximum

personal safety during the operation and to ensure the meter is

used safely and is kept in good operating condition.

•

Read these operating instructions thoroughly and

completely before operating your meter. Pay particular

attention to WARNINGS, which will inform you of

potentially dangerous procedures. The instructions in these

warnings must be followed.

Always inspect your meter and test leads for any sign of

damage or abnormality before every use. If any abnormal

conditions exist (i.e. broken test leads, cracked cases,

display not reading, etc.), do not attempt to take any

measurements.

Do not expose the instrument to direct sunlight, extreme

temperature or moisture.

Never ground yourself when taking electrical

measurements. Do not touch exposed metal pipes, outlets,

fixtures, etc., which might be at ground potential. Keep

your body isolated from ground by using dry clothing;

rubber shoes, rubber mat, or any approved insulating

material.

You always are careful when working with voltages above

60V dc or 30V ac rms. Keep fingers behind the probe

barriers while measuring.

Never use the meter to measure voltages that might

exceed the maximum allowable input value of any function.

Never touch exposed wiring, connections or any live circuit

when attempting to take measurements.

-2-

MAINTENANCE

•

Before opening the case, always disconnect test leads

from all energized circuits.

Never use the meter unless the back cover is in place and

fastened completely.

Do not use abrasives or solvents on the meter. To clean it

using a damp cloth and mild detergent only.

Qualified and trained service technicians should only

perform calibration and repair of the meter.

•

Do not attempt calibration or service unless trained and

another person capable of rendering first aid and

resuscitation is present.

GENERAL DESCRIPTION

The meter is a handheld 3 1/2 digital clamp meter for measuring

DC and AC voltage, AC current, Resistance, Diode and Continuity

Test with battery operated.

FRONT PANEL DESCRIPTION



















Transformer jaws

Pick up the AC current flowing through the conductor.

Hold button

When this button is pushed, the display will keep the last

reading and “ ” symbol will appear on the LCD until

pushing it again.

Rotary switch

This switch is used to select functions and desired

ranges.

-3-































⑨

⑨⑨

⑨

⑩

⑩⑩

⑩

Back light

To use this function, press the LIGHT button. When this

button is pushed, the Back light of display is on. After

about 3 −5 seconds, the Back light is self-off. The Back

light is on again, just push this button once.

Display

3 1/2 digit, 7 segment, 16mm high, LCD.

“V” jack

This is positive input terminal for VOLT measurements

connection is made to it using the red test lead.

“COM” jack

This is negative ( ground ) input terminal for all

measurement modes except current. Connection is made

to it using the black test lead.

“Ω” jack

This is the positive input terminal for ohms and diode.

Connection is made to it using the red test lead.

Power Switch

A push −push switch is used to turn the meter on or off.

Trigger

Press the lever to open the transformer jaws. When the

lever is released, the jaws will close again.

-4-

CLAMP METER LAYOUT

-5-

OPERATING INSTRUCTIONS

DC VOLTAGE MEASUREMENT

Connect the red test lead to the “V” jack and the black lead

to the “COM” jack.

Set rotary switch at desired 1000V position.

Connect test leads across the source or load being

measured.

Read voltage value on the LCD display along with the

polarity of the red lead connection.

AC VOLTAGE MEASUREMENT

Connect the red test lead to “V~” jack and the black test lead

to the “COM” jack.

Set the rotary switch at desired 750V~ position.

Connect test leads across the source or load being

measured.

Read voltage value on the LCD display.

AC CURRENT MEASUREMENT

Set the rotary switch at desired A~ position.

Press the trigger to open transformer jaw and to clamp one

conductor only, making sure that the jaw is firmly closed

around the conductor.

Read current value on LCD display.

When only the figure “1” is displayed, it indicates overrange

situation and the higher range has to be selected.

-6-

RESISTANCE MEASUREMENT

Connect the red test lead to “Ω” jack and black test lead

to the “COM” jack (The polarity of red lead is positive “+”).

Set the rotary switch at desired ”Ω” range position.

Connect test leads across the resistor to be measured and

read LCD display.

If the resistance being measured is connected to a circuit

，

turn off power and discharge all capacitors before applying

test probes.

NOTE:

If the resistance being measured exceeds the maximum

value of the range selected or the input is not connected, an

overrange indication

“

”

will be displayed.

When checking in-circuit resistance, be sure the circuit under

test has all power removed and that all capacitors have been

discharged fully.

AUDIBLE CONTINUITY TEST

Connect red test lead to “Ω” jack, black test lead to

“COM” jack.

Set range switch to “ ” position.

Connect test leads to two points of circuit to be tested. If

continuity exists, built-in buzzer will sound.

DIODE TEST

Connect the red test lead to “Ω” jack and the black test

lead to the “COM” jack (The polarity of red lead is positive

“+”.). -7-

Set the rotary switch at “ ” position.

Connect the red test lead to the anode of the diode to be

tested and the black test lead to the cathode of the diode.

The approx. forward voltage drop of the diode will be

displayed. If the connection is reversed

，

only figure “1” will be

shown.

SPECIFICATIONS

Accuracy is specified for a period of one year after calibration and

at 18

℃

to 28

℃

(64°F to 82°F) with relative humidity to 80%.

GENERAL

Maximum voltage

between terminals and

earth ground

: CAT II 1000V and CAT III 600V

Display : LCD, 1999 counts, updates 2

―

3/ sec.

Polarity indication : “

―

”displayed for negative polarity.

Overrange Indication : Only figure “1” on the display.

Jaw opening capability

: 42mm (Max conductor size)

Power : 9V battery, NEDA 1604 6F22 006P.

Low battery indication : “ ” Appears on the display.

Operating Environment

: 0 to 40

℃

Storage temperature :

―

℃

to 50

℃

Temperature coefficient

: 0.1

specified accuracy) /

℃

( <18

℃

or >28

℃

)

Altitude : 2000m

Size : 250mm

99mm

43mm

Weight : Approx.460g.

-8-

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