Mastech MS20006 Manual de usuario

MS2000G

DIGITAL AC/DC CLAMP METER

MASTECH

HOLD

SAFETY INFORMATION .……………………………2

SAFETY SYMBOLS .…………………………………2

SAFETY PRECAUTIONS ……………………………3

MAINTENANCE .………………………………………4

GENERAL DESCRIPTION …..………………………4

FRONT PANEL DESCRIPTION …..…………………5

OPERATING INSTRUCTIONS ………………………8

SPECIFICATIONS …...……………………………11

REPLACING THE BATTERY ...……………………12

ACCESSORIES ………………………………………13

CONTENTS

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 an

overvoltage category (CAT II) and pollution 2.

SAFETY INFORMATION

SAFETY SYMBOLS

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.

The digital clamp meter complies with the requirements

of the following European Community Directives:

89/336/EEC (Electromagnetic 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

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

SAFETY PRECAUTIONS

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.

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.

●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.

MAINTENANCE

The meter is a handheld 31/2 digital clamp meter for

GENERAL DESCRIPTION

measuring DC and AC voltage, AC current, Resistance,

Frequency, Temperature (°C&°F), Diode and Continuity

Test with battery operated.

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 as well as to turn on/off the meter.

Backlight

To use this function, press the Back 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, 18mm high, LCD.

“VHz” jack

This is positive input terminal for VOLT

measurements connection is made to it using the red

FRONT PANEL DESCRIPTION

(1)

(2)

(3)

(4)

(5)

(6)

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.

Connection is made to it using the red test lead.

Temperature Measuring Socket

Insert a “K” type thermocouple into the temperature

measuring socket and contact the object to be

measured with the thermocouple probe.

Trigger

Press the lever to open the transformer. When the

lever is released, the jaws will close again.

(7)

(8)

(9)

(10)

MASTECH

HOLD

CLAMP METER LAYOUT

1.Connect the red test lead to the “VHz” jack and the

black lead to the “COM” jack.

2.Set rotary switch at desired V position.

3.Connect test leads across the source or load being

measured.

4.Read voltage value on the LCD display along with the

polarity of the red lead connection.

OPERATING INSTRUCTIONS

DC VOLTAGE MEASUREMENT

AC VOLTAGE MEASUREMENT

1.Connect the red test lead to “VHz” jack and the black

 test lead to the “COM” jack.

2.Set the rotary switch at desired V~ position.

3.Connect test leads across the source or load being

measured.

4.Read voltage value on the LCD display.

AC CURRENT MEASUREMENT

1.Set the rotary switch at desired A~ position.

2.Press the trigger to open transformer jaw and to

clamp one conductor only, making sure that the jaw

is firmly closed around the conductor.

3.Read current value on LCD display.

RESISTANCE MEASUREMENT

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

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

positive “+”.)

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

3.Connect test leads across the resistor to be

measured and read LCD display.

4.If the resistance being measured is connected to a

circuit,turn off power and discharge all capacitors

before applying test probes.

NOTE:

1.If the resistance being measured exceeds the

 maximum value of the range selected or the input is

 not connected, an overrange indication “1”will be

 displayed.

2.When checking in-circuit resistance, be sure the

circuit under test has all power removed and that all

capacitors have been discharged fully.

3.For measuring resistance above 1MΩ, the meter may

take a few seconds to get stable reading. This is

normal for high resistance measurements.

MEASURING TEMPERATURE

1.Set the rotary switch at °C or °F Position. The LCD

display will show the current environment

temperature.

10 11

2.Inserts “K” type thermocouple into the temperature

measuring socket on the front panel and contact the

object to be measured with the thermocouple probe.

3. Read temperature value on the LCD display.

1. To avoid electric shock, be sure the thermocouple has been

removed before changing to another function measurement.

2. Before attempting to insert thermocouple for testing, always be

sure that test leads have been disconnected from any

measurement circuits.

3. The thermocouple has been removed when making voltage

measurements with test leads.

WARNING

MEASURING FREQUENCY

1.Connect red test lead to the “VHz” jack and the black

test to the COM jack.

2.Set the rotary switch at Hz Position.

3.Connect test leads across the source or load under

measurement.

NOTE:

1.DO not apply more than 250Vrms to the input.

2.In noisy environment, it is preferable to use shield

 cable for measuring small signal.

DIODE TEST

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

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

is positive “+”.).

2.Set the rotary switch at “ ” position.

3.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.

4.The approx. forward voltage drop of the diode will be

displayed. If the connection is reversed,only figure

“1” will be shown.

AUDIBLE CONTINUITY TEST

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

 “COM” jack.

2.Set range switch to “ ” position.

3.Connect test leads to two points of circuit to be

 tested. If continuity exists, built-in buzzer will sound.

SPECIFICATIONS

Accuracy is specified for a period of one year after

calibration and at 18°C to 28°C (64°F to 82°F) with

relative humidity to 80%.

GENERAL

Maximum voltage between

terminals and earth ground :

CAT II 1000V dc or 750V

ac rms. (sine)

Display LCD, 1999 counts, updates

2-3/ sec.

12 13

Polarity indication “-”displayed for negative

polarity

Overrange Indication Only figure “1” on the display

Jaw opening capability 55mm (Max conductor size)

Power 9V battery, NEDA 1604 or

IEC 6F22

Low battery indication “ ” appears on the display

Operating Environment 0 to 40°C

Storage temperature -10°C to 50°C

Temperature coefficient 0.1×specified accuracy) /

°C ( <18°C or >28°C )

Altitude 2000m

Size 282mm×104mm×47mm

Weight Approx.570g.

DC VOLTAGE

Range 

20V

200V

1000V

Resolution 

1mV

10mV

0.1V

Accuracy

±0.5% of rdg ± 1 digit

±1.0% of rdg ± 2 digit

Input Impedance: 10MΩ

AC VOLTAGE

Range 

200V

750V

Resolution 

0.1V

Accuracy

±1.0% of rdg ± 3 digit

Input Impedance: 10MΩ

Frequency range: 40Hz to 400Hz.

Response: Average responding, calibrated in rms. of sine

wave.

AC CURRENT

Range 

200A

2000A

Resolution 

0.1A

Accuracy

±2.0% of rdg ± 5 digit

Overload Protection: 2200A for 60 seconds maximum.

Frequency range: 50Hz to 60Hz.

<600A ±2.0% of rdg ± 5 digits

600A to1000A ±3.0% of rdg ± 5 digits

>1000A ±3.0% of rdg ± 15 digits

RESISTANCE

Range 

200Ω

20kΩ

Resolution 

0.1Ω

10Ω

Accuracy

±1.0% of rdg ± 3 digit

2MΩ1kΩ

±1.5% of rdg ± 15 digit

TEMPERATURE

Range 

0°C to 750°C

32°F to 1400°F

Resolution 

1°C

1°F

Accuracy

±1.0% of rdg ± 3 °C

±1.0% of rdg ± 3 °F

Test Range

0°C to 400°C

32°F to 752°F

400°C to 750°C

752°F to 1400°F

±2.0% of rdg ± 1 °C

±2.0% of rdg ± 1 °F

FREQUENCY

Range 

2kHz

20kHz

Resolution 

1Hz

10Hz

Accuracy

±2.0% of rdg ± 5 digit

±1.5% of rdg ± 5 digit

Input Limit: 250V ac.

DIODE & CONTINUITY

Range  Description

Display read approximate forward voltage of diode.

If continuity exists (about less than 30Ω), built-in

buzzer will sound.

Before attempting to open the case of battery, always be sure that

test leads have been disconnected from measurement circuits.

Close case and tighten screws completely before using the meter

to avoid electrical shock hazard.

WARNING

REPLACING THE BATTERY

If “ ”appears on display, it indicates that the battery

should be replaced. Use the following procedure to

replacing the battery:

1.Disconnect test leads from any live source, turn

the rotary switch to OFF, and remove the test

leads from the input terminals.

2.The battery cover is secured to the bottom case by

a screw. Using a screwdriver, remove the screw

from the battery cover and remove the battery

cover.

3.Remove battery and replace with a new equivalent

9 volt battery.

4.Replace the battery cover and reinstall the screw.

ACCESSORIES

• Operator’s instruction manual • Set of test leads

• “K”type thermocouple

• 9 volt battery. NEDA 1604 6F22 006P type

• Gift box

Using this appliance in an environment with a strong radiated radio-frequency

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

accuracy. The accuracy can be reduced to ±(12% of reading + 6 digits).

CAUTION:

Replace test leads if leads become damaged or worn.

Use meet EN 61010-031 standard, rated

CAT II 1000V, or better test leads.

WARNING

Replacing Test Leads

R-00-05-XXXX

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