Mastech MS2009A Manual de usuario

Clamp Meter User Manual

SEL

MAX

NCV

HOLD

OFF

AC CLAMP METER

200/600

2/20

OFF

RAN

AUTO MAX

°C°F

kMΩ

μmVA

MULTIFUNCTION DIGITAL

CONTENTS

Safety requirements................................1

Safety signs............................................1

Notes.......................................................1

Maintenance...........................................2

Overview.................................................3

Meter Indications.......................................3

Schematic Drawing For Panel

.....................5

Instructions..............................................6

Accuracy Indicators...............................10

Automatic Power-Off...............................13

Replace Battery.....................................13

Accessories...........................................14

MULTIFUNCTION DIGITAL

Safety Requirements

The MS2009A digital clamp meter has been designed

according to Safety Standard IEC61010-1

IEC61010-2-032 for electronic measuring instruments

and hand-held current clamps. It conforms to safety

standards for double insulation CAT III 600 V and

grade 2 for pollution.

Safety Signs

Important safety sign. Refer to the operation manual.

Danger high voltage.

Double insulation (Safety equipment with class II).

Ground (earth).

Allow to be used around conductors without

danger to life.

Notes

• Before using this meter, please read carefully this

user manual and pay special attention to “warning”

content. Please follow the “warning” instructions.

• To meet the safety requirements, only use probe

supplied with the meter. If the probe is replaced,

a new one with the same model or same electric

specification should be used.

• Before using it, please check the meter and probe

for any damage or abnormal condition. If an

abnormal situation appears (for example: bare

probe, enclosure damage, no liquid crystal display,

etc), don't use the meter.

• When the meter is measuring, don't touch the unused

input terminal.

• Be careful when measuring voltage greater than 60V

DC and 30V AC. Don't allow fingers to touch or block

part of the probe.

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

be tested, please switch the function measuring range

to the maximum position, then gradually select lower

ranges until the correct range is found. Do not exceed

the input limit specified in each measuring range.

• Don't measure voltage greater than the upper limit for

each range.

• Before changing the function measuring range switch

to a different position, set the probe and the circuit

being tested to an open state.

• Before online resistance measurement, turn off all

power supplies in circuit and release all charges on

both ends of capacitor.

• Don't expose the meter exposure to strong light, high

temperature or moisture (humidity).

• Don't touch bare wires, connectors or circuits being

measured.

Maintenance

• Before opening the meter back cover, make sure that

the probe is removed from the circuit to be measured.

• Only wet cloth and a small amount of detergent can

be used for cleaning the meter. Don't use chemical

solvents to wipe the meter case.

• If you find any abnormal conditionon the meter, stoop

using the meter immediately and have it repaired.

• Repair the meter with the help of a trained technician.

MULTIFUNCTION DIGITAL MULTIFUNCTION DIGITAL

Overview

The meter is a safe and reliable digital clamp

meter with stable performance. Its design is based

on a large scale integrated circuit double integral

A/D converter, with full measuring range of overload

protection circuit. With a unique appearance, it is a

special electrical meter with superior performance.

Meter Indications

1. AC current clamp head

Pick AC current

2. NCV indicator light

When the voltage of conductor under test is more

than AC 90V, the indicator will flash constantly.

3. SEL function exchange key

When it is in V position, it is used to switch between

DCV and ACV .

When it is in position, it is used to switch between

diode measurement and continuity measurement.

4. Display

LCD display (4 significant digits).

5. COM input end

In addition to AC current, negative input end of

black probe.

6. INPUT end

Red probe positive input end when measuring

voltage, resistance, diode forward voltage drop

and circuit continuity.

7. Function measuring switch

Used to select each function and measuring range

grade.

8. Clamp head center position

To improve current measurement accuracy, place

the conductor to be measured in the center position.

9. NCV sense position

When detecting non-contact voltage, position close

to the conductor to be tested

Other Keys

Backlight

The meter display is set with backlight. Press the key

for 2 seconds to light. Press the key for 2 seconds again

to turn off the backlight.

HOLD data hold key

Press “HOLD” key. The meter display will keep the last

test reading; and show “ ”symbol. Press “HOLD” key

again and the meter will restore to normal measuring

state.

RAN Manual/Automatic Switch Key

In voltage and resistance measurement position, clamp

meter is set to automatic measuring range by default.

Press this key to switch to manual measuring range.

In the manual measuring range mode, click the key once

to jump to upper grade. If it is at the top grade, then it will

jump to the bottom grade. Hold this key for 2 seconds to

switch back to automatic measuring range.

MAX Maximum reading value display

Press “MAX” key. The display will show the maximum

reading value among measuring data.

Press the “MAX” key again. The meter will revert to

normal measurement state

NCV Non-contact voltage detection switch Used for

non-contact voltage detection.

MULTIFUNCTION DIGITAL MULTIFUNCTION DIGITAL

Schematic Drawing For Panel Instructions

DC Voltage Measurement

1. Insert red probe to “INPUT” jack and insert black

probe to “COM” jack.

2. Place function measuring range switch to DC

voltage measuring range. Press “SEL” key, and

connect the probe to the power source or load to be

tested. The polarity of the end connected with red

probe will be shown in the display at the same time.

3. Read the measuring result from display.

Notes!

∆ If the range of voltage to be tested is not known in

advance, place function measuring switch to the

maximum range, then gradually reduce to obtain

the correct range.

∆ Pay special attention to avoid shock when

measuring high voltage.

AC Voltage Measurement

1. Insert red probe to “INPUT” jack and insert black

probe to “COM” jack.

2. Place function measuring range switch to AC

voltage measuring range, and connect the probe

to the power source or load to be tested. The

polarity of the end connected with red probe will

be shown in the display at the same time.

3. Read the measuring result from display.

Notes!

∆ Pay special attention to avoid shock when

measuring high voltage.

SEL

MAX

NCV

HOLD

OFF

AC CLAMP METER

200/600

2/20

OFF

RAN

AUTO MAX

°C°F

kMΩ

μmVA

MULTIFUNCTION DIGITAL MULTIFUNCTION DIGITAL

AC Current Measurement

1. Place function measuring range switch to AC

current measuring range.

2. Press the trigger, open clamp head, clip the lead

in the clamp to measure the lead current. Note:

Clamping two or more leads at the same time will

give invalid reading.

3. Read the measuring result from display.

Notes!

∆ If the range of current to be tested is not known in

advance, please place function measuring switch

to the maximum current range, then gradually

reduce to obtain the correct range.

Resistance Measurement

1. Insert red probe and black probe to “INPUT” and

“COM” jack.

2. Place function measuring range switch to required

Ω position, and connect the probe to resistor to

be tested.

3. Read the measuring result from display.

Note:

∆ If measured resistance value is more than the

maximum value of chosen measuring range, it will

show will “OL`”. At this time, select a higher range.

∆ When checking online resistance, first turn off all

power supplies in the circuit to be measured and

discharge all capacitors fully.

∆ When measuring the resistance more than 1MΩ,

the reading will be stable after several seconds.

This is normal for high resistance measuring.

Diode Test

Insert red probe to “INPUT” and insert black probe to

“COM” jack. At this time, red probe polarity is “+”.

Place function measuring switch to position. Red

probe is connected to the anode of diode under

measurement, and black probe is connected to the

cathode of diode under measurement. Read

approximate forward voltage drop value from the display.

Circuit Continuity Test

Insert red probe to “INPUT” jack, and insert black

probe to “COM” jack. Place function measuring switch

to position and press SEL key to enter circuit

continuity test. Probe is connected to two points of

circuit under measurement. In continuity test, when

test resistance is less than 50Ω, buzzer will sound.

When it is from 50Ω to 90Ω, buzzer may or may not

sound. When it is more than 90Ω, buzzer won't sound.

Non-Contact Voltage Detection

Press NCV key. Place non-contact sensor close to the

conductor. When test voltage is greater than 90V AC

(RMS) and when the meter is close to the conductor,

the meter induction voltage indicator will flash and

buzzer will sound.

Note:

1: Even there is no indication, voltage may exist. Don't

use non-contact voltage detector to judge whether

there is voltage in the wire. Detection operation

could be affected by socket design, insulation

thickness, type and other factors.

MULTIFUNCTION DIGITAL MULTIFUNCTION DIGITAL

2: When inputting voltage on the meter input terminal,

due to the existence of the induced voltage, voltage

induction indicator also may light.

3: Interference sources of external environment (such

as flashlight, motor, etc.) may trigger non-contact

voltage detection by mistake.

Technical Data

General characteristics: the maximum voltage of

voltage input end and ground CAT III 600V and

600V~

Display method: LCD display with maximum of 1999

Measuring principle: double integral A/D convertion

Measuring range choice: Automatic

Measurement speed: 3 times/s

Unit display: has function and power unit symbol

display Polarity indication: display “-” symbol for

negative polarity input

Overrange display: “OL”

Data hold function: display “ ” on the top of LCD

Low battery display: display “ ” on the top of LCD

Power battery: DC1.5V Х3 SIZE AAA.

Outside measurement: 220mm×81mm×41mm

Weight: about 286g (include battery)

The largest size of open clamp jaw: 26mm

Operating environment: 5°C~35°C

Storage temperature: -10°C~50°C

Accuracy Indicators

Accuracy: ±(% of reading + digits) with one year of

warranty Environment temperature: 18°C~28°C

Environment humidity: not more than 75%

Temperature coefficient: 0.1 × Accuracy/ 1°C

* When measuring AC current,

place the conductor to

be measured be in the center

position of clamp head.

If it is not in the center

position, it can increase

error by 1.5%

DC Voltage

1mV

10mV ±(0.6% of reading + 3 digits)

200mV

20V

600V

0.1mV

1V ±(0.8% of reading + 3 digits)

Measuring

range Resolution Accuracy

200V 0.1V

Input impedance: 10MΩ.

Maximum allowable input voltage: 600V DC or 600V

AC (RMS)

Sign

Condctor

Sign

MULTIFUNCTION DIGITAL MULTIFUNCTION DIGITAL

DC Voltage

1mV

10mV ±(0.8% of reading + 5 digits)

200mV

20V

600V

0.1mV

1V ±(1.0% of reading + 5 digits)

Measuring

range Resolution Accuracy

200V 0.1V

Input impedance: 10MΩ.

Measuring frequency range: 40Hz~400Hz.

Maximum allowable input voltage: 600V DC or 600V

AC (RMS)

±(2.0% of reading + 3 digits)

AC Current

0.001A

0.01A

20A

600A 1A

Measuring

range Resolution Accuracy

200A 0.1A

Measuring frequency range: 0~500A 40Hz ~400Hz;

500A~600A 60Hz~400Hz.

Maximum allowable input current: AC 600A for not

more than 20 seconds.

±(2.0% of reading + 5 digits)

Resolution Accuracy

200Ω

2kΩ

0.1kΩ

0.001kΩ

0.1Ω

0.01kΩ

0.01MΩ

0.001MΩ

Resistance

20kΩ

200kΩ

2MΩ

20MΩ±(1.2% of rdg + 5digits)

Overload protection: 250V DC or 250V AC (RMS)

Measuring range

±(0.8% of rdg +4digits)

1mV

Display approximate value of

forward voltage drop (Open

circuit voltage is about 1.5V)

Diode Test

Overload protection: 250V DC or 250V AC (RMS)

Accuracy

Measuring

range Resolution

The buzzer will sound when it is

<60Ω (Open circuit voltage is

about 0.45V)

Continuity Test

Note: When resistance is from 60Ω to 90Ω, the buzzer

may or may not sound. When it is more than 90Ω, the

buzzer won't sound.

Overload protection: 250V DC or 250V AC (RMS)

100MΩ

Measuring

range Resolution Accuracy

MULTIFUNCTION DIGITAL MULTIFUNCTION DIGITAL

Automatic Power-Off

In order to extend the battery life, the meter has an

automatic shutdown function. If there is no key

operation or function measuring range change

within 15 minutes, the meter power will disconnect

automatically. Press “SEL” button to return the

meter to the working state again.

Replace Battery

To avoid electric shock, disconnect the probe

before opening battery cover. Disconnect any

circuit or signal being tested. Use only a

battery with the same model or same electric

specification.

Warning

If “ ” symbol appears, it means that the battery

should be replaced. Before opening the meter back

cover, make sure that no probe is connected to the

circuit. Check that the back cover is tightened

before using the meter., Follow these steps to

replace the battery:

1. Disconnect the probe and remove it from the

input jack. Switch rotating function measuring

range switch to “OFF”.

2. Unscrew screws on the battery cover and remove

the battery cover.

3. Take out the old batteries and replace with three

new 1.5 V SIZE AAA batteries.

Replace the battery cover and tighten screws.

Accessories

User Manual

Probe

Packing box

1.5V SIZE AAA Battery

1 pc

1 pair

1 pc

3 pcs

HYS007093

MULTIFUNCTION DIGITAL MULTIFUNCTION DIGITAL

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