DIGITAL CLAMP METER

MS2108

DIGITAL CLAMP METER

OPERATION MANUAL

600V CAT.lll

MAX 600A

MS2108

A

A

OFF

V

Ω

SEL

MIN

MAX

RAN

Hz

/%

OFF

B.L

HOLD

T-RMS

AC/DC CLAMP METER

Press 2 Sec

AUTO-PWER OFF

INRUSH

AUTO MANU MAX MIN ZERO

°C°F%

μmVA nμmF

MkΩ

Hz

TRMS

INRUSH

COM INPUT

600V

CAT.

III

MAX 600V

CONTENTS

1. Safety Information............................1

1.1 Preliminary

............................................1

1.2 During use ..

.

...

...

...................................2

1.3 Symbols............

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

1.4 Maintenance............

.............................4

2. Description.......................................

4

2.1 Names OF Parts....................................6

2.2 Switch, Buttons And Input Jacks

............7

2.3 Names OF Parts ..................................7

3. Specifications..................................11

3.1 General Specifications

........................11

3.2 Technical Specifications ......................12

4. Operation Instruction

.......................15

4.1 Holding Readings

.................................15

4.2 Switching Ranges .................................15

4.3 Switching Frequency Or Duty ................16

4.4 Switching Maximum Or

4.5 Switching Functions ..............................17

4.6 Back Light And Clamp Lighting Bulb

.......17

CONTENTS

4.7 Auto Power Off..........................................18

4.8 Preparing For Measurement ......................19

4.9 Measuring Ac Current

...............................20

4.10 Measuring Inrush Current ........................22

4.11 Measuring Dc Current

..............................24

4.12 Measuring Ac Voltage ..............................26

4.13 Measuring Dc Voltage ..............................27

4.14 Measuring Frequency

..............................30

4.15 Measuring Duty

.......................................34

4.16 Measuring Resistance

.............................38

4.17 Testing Diode

..........................................40

4.18 Testing Continuity ....................................42

4.19 Measuring Capacitance ...........................44

5. Maintenance.......................................46

5.2 Replacing Test Leads .................................46

6. Accessories.......................................46

1. Safety Information

WARNING

BE EXTREMELY CAREFUL WHEN USING THIS

METER. Improper use of this device can result

in electric shock or destruction of the meter.

Take all normal safety precautions and follow

the safeguards suggested in this manual. To

exploit full functionality of the meter and

ensure safe operation, please read carefully

and follow the directions in this manual.

This meter has been designed according to IEC-1010 concerning electronic measuring instruments with an overvoltage category CAT 600V and pollution 2.

Follow all safety and operating instructions to ensure safe use of the meter.

With proper use and care, this digital multimeter will give you years of satisfactory service.

1.1 Preliminary

1.1.1 When using the meter, the user must observe all

normal safety rules concerning:

- General protection against electric shock

- Protection of the meter against misuse.

1.1.2 When the meter is delivered, check whether it

has been damaged in transit.

1.1.3 After being stored and delivered under harsh

conditions, the meter should be checked and

confirmed whether any damages have been

incurred.

01

1.1.4 Test leads must be kept in good condition.

Before using check whether the insulation

on test leads has been damaged and any

wire has been exposed.

1.1.5 Use the test leads supplied to ensure operation

safety. If required, they must be replaced with

test leads of the same model or class.

1.2 During Use

1.2.1 Use the right input jack, function and range.

1.2.2 Do not take measurements that exceed the

protection limit values indicated in the

specifications.

1.2.3 Do not touch the metal tips of the test leads

when the meter is connected to the circuit to

be measured.

1.2.4 Keep your fingers behind the probe barriers

when taking a measurement with an effective

voltage above 60V DC or 30V rms AC.

1.2.5 Do not take voltage measurement if the value

between the terminals and earth ground

exceeds 600V.

1.2.6 Select the highest range if the value scale to be

measured in the manual range is unknown.

1.2.7 Disconnect the test leads from the circuit under

test before turning the rotary selector to change

functions.

1.2.8 Do not measure the resistance,capacitance,

diode or continuity of live circuits.

1.2.9 Do not connect the meter to any voltage source

while the rotary selector is in the current,

resistance, capacitance, diode or continuity range.

1.2.10 Do not take capacitance measurements until

the capacitor to be measured has been fully

discharged.

02

1.2.11 Do not use the meter near explosive gases,

steam or dirt.

1.2.12 Stop using the meter if any abnormalities or

faults are observed.

1.2.13 Do not use the meter unless its rear case and

battery cover is securely fastened in its original

position.

1.2.14 Do not store or use the meter in areas exposed

to direct sunlight, at high temperature or with

high relative humidity.

1.3 Symbols

Caution, risk of danger (Important safety

information; refer to the operation manual.)

Application around and removal from HAZARDOUS

LIVE conductors is permitted.

Double insulation(Protection class II).

CAT III Overvoltage (Installation) category III, Pollution

Degree 2 per IEC1010-1 refers to the level of

Impulse Withstand Voltage protection provided.

Conforms to European Union Directive

Earth (ground) terminal

1.4 Maintenance

1.4.1 Do not attempt to remove the rear case to adjust

or repair the meter. Such actions should only be

performed by a technician who fully understands

the meter and the danger involved.

1.4.2 Before opening the case and battery cover of the

meter, always disconnect test leads from all

sources of electric current. Disconnect the test

leads from all sources of electric current before

03 opening the rear case and battery cover of the meter.

1.4.3 To avoid any electric shock caused by error

readings, replace the batteries immediately when

the “ ” sign appears on the display.

1.4.4 Use damp cloth and mild detergent to clean the

meter; do not use abrasives or solvents.

1.4.5 Turn the rotary selector to OFF position to switch

off the power when the meter is not in use.

1.4.6 Remove the batteries to avoid damages to the

meter if it will idle for a long time.

2. Description

- This meter is a portable professional measuring instrument

with LCD and back light easily reading. The 'single-hand

operation' design for the range switch makes measurement

simple and easy. Overload protection and low battery

indication are provided. It is an ideal multi-function

Instrument with scores of practical applications for

professional, workshop, school, hobby and home use.

- The meter can perform measurements of AC/DC voltage

and current, resistance, frequency, duty, capacitance, as

well as continuity and diode test.

- Both auto range and manual range are available.

- This meter is equipped with reading hold function.

- This meter is equipped with true root mean square value

measuring function (at AC A and AC V range).

- This meter is equipped with inrush current measuring

function.

- This meter is equipped with auto zero function

(at DCA range).

- This meter is equipped with maximum value measuring

function.

- This meter is equipped with minimum value measuring

function.

- This meter can measure frequency by clamp.

- This meter has function of auto power off.

04

2.1 Names Of Components

(1) Current Clamp

(2) Clamp Lighting Bulb

(3) Panel

(4) Trigger

(5) Function Switch Button (S E L)

(6) MAX/MIN Switch Button (MAX/MIN)

(7) Auto/Manual Switch Button (RAN)

(8) Liquid Crystal Display (LCD)

(9) COM Jack

(10) Input Jack

(11) Hz/Duty Switch Button (Hz/%)

(12) Reading Hold/Back Light Button (HOLD/B.L)

(13) Rotary selector

(14) OFF - power switch

(15) “+” Symbol

(16) “-” Symbol

(17) Rear Case

(18) Fixing Screw of Battery Cover

(19) Battery Cover

05

1

2

3

4

5

6

7

8

9

600V CAT.lll

MAX 600A

MS2108

A

A

OFF

V

Ω

SEL

MIN

MAX

RAN Hz

/%

OFF

B.L

HOLD

T-RMS

AC/DC CLAMP METER

Press 2 Sec

AUTO-PWER OFF

INRUSH


°C°F%

μmVA nμmF

MkΩ

Hz

TRMS

INRUSH

COM

INPUT

600V

CAT.

III

MAX 600V

15

14

13

12

11

10

16

17

18

19

CAUTION

ACCORD WITH

POLLUTION DEGREE 2

6000V CAT lll

WARNING

TO AVOID ELECTRICAL

SHOCK DO NOT

OPERATE WITH OPEN

BATTERY COVER

DC1.5VX3, SIZE AAA

PLEASE READ

MANUAL FOR SAFETY

PATENT PENDING

06

2.2 Switch, Buttons And Input Jacks

HOLD/B.L Button

- For holding the reading or control backlight

S E L Button

- For switching among measuring functions

RAN Button

- For switching between auto and manual ranges.

Hz/% Button

- For switching between frequency and duty measuring

functions.

MAX/MIN Button

- For switching between maximum and minimum value

measuring function.

Rotary Selector

- For selecting functions and ranges.

OFF Position

- for turning off the power.

INPUT Jack

- For measuring voltage, resistance, frequency, duty,

capacitance, diode, and continuity.

COM Jack

- Common input connection for current, voltage, resistance,

frequency, duty, capacitance, diode, continuity

measurement.

Clamp

- For measuring current

2.3 LCD (Liquid-crystal display)


°C°F%

μmVA nμmF

MkΩ

Hz

TRMS INRUSH

07

AC

DC

AUTO

MANU

MAX

MIN

ZERO

TRMS

H

INRUSH

% mV, V

A

μF, mF

Ω, kΩ,

MΩ

Hz, kHz

Alternating current

Direct current

Diode test

Continuity buzzer

Auto range mode

Manual range mode

The maximum value is being measured.

The minimum value is being measured.

DCA zero

Aotu power off

Battery low

True RMS

This indicates that the display data is being held.

Inrush current is being measured.

Percent (Duty cycle)

Milli-volts, Volts (Voltage)

Amperes (Current)

Micro-farad, Milli-farad (Capacitance)

Ohms, Kilo-ohms, Mega-ohms

(Resistance)

Hertz, Kilo-hertz (Frequency)

08

3. Specifications

Calibration is required once a year, to be carried out at a temperature between 18°C and 28°C (64°F to 82°F) and relative humidity below 75%.

3.1 General Specifications

3.1.1 Auto range and manual range options are available.

3.1.2 Over range protection is provided for all ranges.

3.1.3 Maximum voltage between terminals and earth

ground: 600V DC or rms AC

3.1.4 Operating altitude: max. 2000 meters (7000 ft.)

3.1.5 Display: LCD

3.1.6 Maximum value display: 6599 digits

3.1.7 Polarity indication: automatic; ‘-’ for negative

polarity.

3.1.8 Over range indication: ‘0L’ or ‘-0L’

3.1.9 Sampling Time: approx. 0.4 second per sample

3.1.10 Unit indication: function and unit.

3.1.11 Auto power off time: 30 min.

3.1.12 Operating power : 1.5V×3 AAA batteries

3.1.13 Battery low indication: ‘ ’ on LCD

3.1.14 Temperature factor: < 0.1×Accuracy /°C

3.1.15 Operating temperature: 0°C to 40°C(32°F to 104°F)

3.1.16 Storage temperature: -10°C to 50°C(10°F to 122°F)

3.1.17 Dimension: 208×78×35mm

3.1.18 Weight: approximate 340g(including batteries)

3.2 Electrical Specifications

Ambient temperature: 23±5°C Relative humidity: < 75%

3.2.1 TRUE RMS

3.2.1.1 For measuring non-sinusoidal waveforms, test

error which is occurred by using True RMS

measurement techniques is less than by using

traditional average-reading techniques.

09

3.2.1.2 Both sinusoidal and non-sinusoidal waveforms

can be tested by True RMS Clamp Meter exactly.

At AC A & AC V ranges, even short two test probes

there are stil l 1-50 digits might be displayed on

LCD. This is normal. Test result will not be affected.

3.2.1.3 At AC A and AC V range, True RMS value can be

tested only when input signal is more than 2% of

full range.

3.2.1.4 To ensure the precision of test result, input signal

should be:

AC voltage: > 13 mV

AC current: > 1.3A

3.2.2 AC Current

Range

66A

600A

Resolution

0.01A

0.1A

Accuracy

±(3.0% of rdg + 10 digits)

- Max. input current: 600A

- Frequency range: 40 to 400Hz

- Response: true root mean square value

3.2.3 Inrush Current

Range

66A

600A

Resolution

0.01A

Accuracy

<60A take it only as referance

0.1A


- Integration Time: 100ms

- Measurement range: 30 ~ 600A




10

3.2.4 DC Current

Range

66A

Resolution

0.01A

600A 0.1A

- Max. input current: 600A DC

3.2.5 DC Voltage

Accuracy


Range Resolution Accuracy

660mV

6.6V

66V

600V

0.1mV

0.001V

0.01V

0.1V

±(0.8% of rdg + 3digits)


- Input impedance: 10MΩ

- Overload protection: 660mV range: 250V DC or rms

AC, 6.6V-600V ranges: 600V DC or 600V rms AC.

- Max. input voltage: 600V DC

Note:

At small voltage range, unsteady readings will appear before the test leads contact the circuit. This is normal because the meter is highly sensitive. When the test leads contact the circuit, the true reading will be shown.

3.2.6 AC Voltage

Range

660mV

6.6V

Resolution

0.1mV

0.001V

Accuracy



66V

600V

0.01V

0.1V

- Input impedance: 10MΩ


- Overload protection: 660mV range: 250V DC or

rms AC, 66V-600V ranges: 600V DC or 600V rms AC.

- Max. input voltage: 600V rms AC



Note:

At small voltage range, unsteady readings will appear before the test leads contact the circuit. This is normal because the meter is highly sensitive. When the test leads contact the circuit, the true reading will be shown.

3.2.7 Frequency

3.2.7.1 By A range ( from current clamp):

Range Accuracy

Resolution

660Hz

1kHz

>1kHz

0.1Hz

0.0011Hz

0.0011Hz


Take it only as referance

- Measurement range: 10 ~ 1kHz

- Input current range: >1A rms AC (higher input

current at higher frequency)

- Max. Input current: 600A rms AC

12 11

3.2.7.2 By V range:

Range Accuracy

Resolution

660Hz

6.6kHz

10kHz

>10kHz

0.1Hz

0.001kHz

0.01kHz

0.01kHz


Take it only as referance

- Measurement range: 10 ~ 10kHz

>

voltage at higher frequency)

- Input impedance: 10M Ω


3.2.8 Duty Cycle

Range

10 - 95%

Resolution

0.1%

Accuracy

±3.0%

3.2.8.1 By A range ( from current clamp):

- Frequency response: 10 ~1kHz

- Input current range:>1A rms AC (higher input current

at higher frequency)


3.2.8.2 By V range:

- Frequency response: 10 ~ 10 kHz

- Input voltage range:>0.2V rms AC (higher input

voltage at higher frequency)

- Input impedance: 10M Ω


13

3.2.9 Resistance

Range Accuracy

Resolution

660Ω

6.6kΩ

66KΩ

660kΩ

6.6MΩ

66MΩ

0.1Ω

0.001kΩ

0.01kΩ


0.1kΩ

0.001MkΩ

0.1MΩ


- Open circuit voltage: 0.4V

- Overload protection: 250V DC or rms AC

3.2.10 Diode

Range

Resolution

0.001V

Function displaying

approximate for

ward voltage of diode

- Forward DC current~1mA

- Reversed DC voltage~3.3V


3.2.11 Continuity

Range

Resolution Function

0.1Ω

Built-in buzzer will sound,

if resistance is lower than

30.

- Open circuit voltage~1.2V


14

3.2.12 Capacitance

Range

6.6µF

66µF

660µF

6.6mF

66mF

Resolution

0.001µF

0.01µF

0.1µF

Accuracy

<2µF±( 4.0% of rdg + 50digits)


0.001mF

0.01mF


4. Operation Instruction

4.1 Holding Readings

4.1.1 Press the “HOLD/B.L” button to hold the readings

while taking measurement and the value on the

display will be held.

4.1.2 Press the “HOLD/B.L” button again to release

the reading hold function.

4.2 Switching Ranges

4.2.1 When the meter is turned on, it is at the auto

range mode for measuring current, voltage,

resistance, capacitance and frequency.

4.2.2 Press the"RAN" button for manual range mode.

The range will go up one level at each press and

return to the lowest level when the highest level

is reached.

4.2.3 Press the "RAN" button for one or more seconds

to return to the auto range.

4.2.4 Press the “RAN” button to get back to normal

test during working in maximum or minimum

value measuring function,

15

Note:

At frequency range, meter can't be set to manual range mode.

4.3 Switching Frequency Or Duty

4.3.1 During working at the voltage or current ranges,

press the “Hz/%” button one time, frequency of

the voltage or current will be measured.Press the

“Hz/%” button twice, the meter will be changed

into the duty range for measuring the duty cycle

of the voltage or current. At the same time, the

meter is changed into manual mode.

back to the condition of the voltage or current

measuring.

Note:

During working at maximum or minimum value measuring function, the meter can't be changed into frequency or duty cycle measuring mode.

4.4 Switching Maximum Or Minimum Value

4.4.1 At all ranges, press the "MAX/MIN" button one

time, the meter can be set to maximum value

measuring mode; press the button three times,

the meter will get back to normal test mode,

and the maximum and minimum value will be

recorded by

the chip.

4.4.2 Press the ”MAX/MIN” button more than one

second or press the“RAN” button, the meter

will get back to normal test.

16

Note:

1) During measuring maximum or minimum value, the

meter will be set to manual mode automatically.

2) During working at frequency or duty measuring

function, the meter can't be changed into maximum

or minimum value measuring mode.

4.5 Switching Functions

4.5.1 AC A range

4.5.1.1 Press the “SEL” button, the meter will get

into inrush current test mode.

4.5.1.2 If press the “SEL” button again, the meter

will get into inrush current test mode again.

4.5.1.3 Press the “SEL” button more than one second

back to normal test mode.

4.5.2 DC A range

into zero.

4.5.2.2 If press the “SEL” button again, the meter

will get into zero again.

“

“ ”

will get back to the normal test mode.

4.5.3 Press the “SEL” button to switch between AC

and DC measurement at the voltage ranges.

” ”

resistance, diode and continuity ranges.

4.6 Back Light And Clamp Lighting Bulb

seconds to switch on the back light if the light

in the environment is too dim for taking reading,

which will last for 60 seconds.

17

4.6.2 During the back light is working, press the

“HOLD/B.L” button for two or more seconds, it

will be turned off.

4.6.3 At the current range, when the back light is

switched on, the clamp lighting bulb will be turned

on at the same time.

Note:

- LED, which requires a larger working current, is the

main source of back light. Although the meter is

equipped with a timer set at 60 seconds (i.e. the back

light will be off automatically after 60 seconds),

frequent use of the back light will shorten the life of

the batteries. Therefore, do not use the back light

unless necessary.

-

When the battery voltage is<3.7V, the symbol “ ”

(battery low)will appear on the LCD. When the back

light is on, even if the batter is>3.7V, the “ ” may

appear because of its large working current which

will cause the voltage to drop. (The accuracy

of the measurement cannot be assured when the

“ “ symbol appears.) In this case, you need not

replace the batteries yet. Normally, the batteries

can last until the “

” appears when the back light

is not being used.

4.7 Auto Power Off

4.7.1 If there is no any operation within any thirty

minutes after power is on, meter will auto power

off.

4.7.2 After auto power off, if press the “SEL” button,

meter will recover the working condition.

18

4.7.3 Press both power on switch and one of

”MAX/MIN” or “RAM”or “Hz/%”button at the

same time more than one second for exiting

auto power off function.

4.8 Preparating For Measurement

4.8.1 Switch on the power by turning the rotary selector.

If the battery voltage is lower than 3.7V, the “

”

symbol will appear and the batteries should be

replaced.

4.8.2 The “

” symbol shows that the input voltage or

current should not exceed the specified value in

order to protect the internal circuit from damage.

4.8.3 Turn the rotary selector to the required function

and range to be measured. Under the manual

mode, choose the highest range when the value

scale to be measured is unknown.

4.8.4 Connect the common test lead first and then the

charged test leads when making connection.

Take away the charged test lead first when

disconnecting.

4.9 Measuring AC Current

WARNING

Beware of Electrocution.

Ensure that the test leads are disconnected from the meter before making current clamp measurements.

4.9.1 Set the rotary selector to the A range position.

4.9.2 Auto range mode or manual range mode can

be selected by pressing the“RAN”button.

4.9.3 Press the trigger to open jaw. Fully enclose

only one conductor.

4.9.4 Take the reading on the LCD.

Note:

1) Do not put more than one cable into

the jaw during test, otherwise incorrect

test value might be obtained.

2) For optimum results, center the conductor in the jaw.

3) At the manual range mode, when only ‘O L’ is shown

on the LCD, it means the measurement has

exceeded the range. A higher range should

be selected.

4) Under the manual range mode, when the scale of

the value to be measured is unknown beforehand,

set the range to the highest.

5) “ ” means the maximum input current is

600A rms AC.

19 20

A

OFF

A

V

Ω

SEL

MIN

MAX

RAN

Hz/%

OFF

B.L

HOLD

INRUSH DIGITAL CLAMP


°C°F%

μmVA nμmF

MkΩ

Hz

TRMS INRUSH

COM INPUT

MAX

600V

CAT.

III

600V

21

A

OFF

A

V

Ω

SEL

MIN

MAX

RAN

Hz/%

OFF

B.L

HOLD



°C°F%

μmVA nμmF

MkΩ

Hz

TRMS INRUSH

COM

INPUT

MAX

600V

CAT.

III

600V

4.10 Measuring Inrush Current

WARNING




4.10.2 Press the trigger to open jaw. Fully enclose

only one conductor.

4.10.3 Press the “SEL” to enter the INRUSH current

measurement mode. Then LCD displays

detected. The detection will be done only one

time and the output reading will be hold.


Note:

1) Do not put more than one cable into

the jaw during test, otherwise incorrect

test value might be obtained.


3) At the manual range mode, when only ‘O L’ is shown

on the LCD, it means the measurement has

exceeded the range. A higher range should

be selected.

4) Under the manual range mode, when the scale of

the value to be measured is unknown beforehand,



600A rms AC.

22

A

OFF

A

V

Ω

SEL

OFF

MIN

MAX

RAN Hz/%

B.L

HOLD

INRUSH

DIGITAL CLAMP


°C°F%

μmVA nμmF

MkΩ

Hz

TRMS INRUSH

COM

INPUT

600V

CAT.

MAX

III

600V

Correct

23

A

OFF

A

V

Ω

SEL

OFF

MIN

MAX

RAN Hz/%

B.L

HOLD

INRUSH

DIGITAL CLAMP


°C°F%

μmVA nμmF

MkΩ

Hz

TRMS INRUSH

COM INPUT

600V

CAT.

MAX

III

600V

Incorrect

4.11 Measuring DC Current

WARNING




4.11.2 Auto range mode or manual range mode can be

selected by pressing the “RAN” button.

4.11.3 Press the “SEL” button, the meter will be set

to zero.

4.11.4 Press the trigger to open jaw. Fully enclose only

one conductor.


4.11.6 Symbol “-” will be displayed on LCD if the

direction of the current is negative.

Note:

1) Do not put more than one cable into the jaw during

test, otherwise incorrect test value might be

obtained.

2) For optimum results, press the “SEL” button to

make the meter get into zero first.


4) At the manual range mode, when only 'O L' or '-O L'

is shown on the LCD, it means the measurement

has exceeded the range. A higher range should

be selected.

5) Under the manual range mode, when the scale

of the value to be measured is unknown beforehand,


6) “ ”means the maximum input current is 600A DC.

24

OFF

A

A

V

Ω

SEL

OFF

MIN

MAX

RAN

Hz/%

B.L

HOLD



°C°F%

μmVA nμmF

MkΩ

Hz

TRMS INRUSH

COM

INPUT

600V

CAT.

III

MAX 600V

Correct

25

A

OFF

A

V

Ω

SEL

MIN

MAX

RAN

OFF

Hz/%

B.L

HOLD



°C°F%

μmVA nμmF

MkΩ

Hz

TRMS INRUSH

COM INPUT

600V

CAT.

MAX

III

600V

Incorrect

4.12 Measuring AC Voltage

WARNING


Pay special attention to avoid electric shock when measuring high voltage.

Do not input the voltage which more than

600V rms AC.

4.12.1 Plug the black test lead into the COM jack and

the red test lead into the INPUT jack.

4.12.2 Set the rotary selector to V position to make

the meter get into AC V range.

4.12.3 Auto range mode or manual range mode can

be selected by pressing the “RAN” button.

4.12.4 Connect the test leads to the voltage source or

load terminals for measurement.


Note:

1) At small voltage range, unsteady readings may

appear before the test leads contact the circuit.

This is normal because the meter is highly sensitive.

When the test leads contact the circuit, the true

reading will be shown.

2) At the manual range mode, when only 'OL' is shown

on the LCD, it means the measurement has exceeded

the range. A higher range should be selected.

3) At the manual range mode, when the scale of the

value to be measured is unknown beforehand, select

the highest range first and lower the range gradually.

4) “ ” means the maximum input voltage is 600V rms AC.

5) If the test result is more than 610V rms AC, symbol

“OL” will be displayed on LCD and the build-up

buzzer will sound.

26

MIN 600A

CAT III 600V

A

A

OFF

V

Ω

SEL

MIN

MAX

RAN

Hz/%

OFF

B

.

L

HOLD

INRUSH

DIGITAL CLAMP

ZERO AUTO MANU MAX MIN

°C°F%

μmVA nμmF

MkΩ

Hz

TRMS INRUSH

COM INPUT

4.13 Measuring DC Voltage

WARNING




600V DC.

27



4.13.2 Set the rotary selector to at the V range position.

4.13.3 Press the“SEL” button to turn to DC V range.

Auto range mode or manual range mode can be


4.13.4 Connect the test leads to the voltage source or

load terminals for measurement.

4.13.5 Take the reading on the LCD. The polarity

symbol denotes the polarity of the end

connected by the red test lead.

Note:

1) At small voltage range, unsteady readings will

appear before the test leads contact the circuit.

This is normal because the meter is highly sensitive.

When the test leads contact the circuit, the true

reading will be shown.

2) Under the manual range mode, when only

‘O L ’ o r ‘- O L’ is shown on the LCD, it means the

measurement has exceeded the range. A higher

range should be selected.

3) Under the manual range mode, when the scale

of the value to be measured is unknown beforehand,

select the highest range first and lower the

range gradually.

4) “ ” means the maximum input voltage is 600V DC.

5) If the test result is more than 610V DC, symbol “O L”

will be displayed on LCD and the build-up buzzer

will sound.

28

MIN 600A

CAT III 600V

A

A

OFF

V

Ω

SEL

MIN

MAX

RAN Hz/%

OFF

B

.

L

HOLD

INRUSH

DIGITAL CLAMP


°C°F%

μmVA nμmF

MkΩ

Hz

TRMS

INRUSH

COM

INPUT

29

9V

4.14 Measuring Frequency

4.14.1 By A range (from current clamp):

WARNING



4.14.1.1 Set the rotary selector to the A range

(A~ or A ) position.

4.14.1.2 Press the trigger to open jaw. Fully enclose

only one conductor.

4.14.1.3 Press the “Hz/%” to switch to the frequency

measurement.

4.14.1.4 Take the reading on the LCD.

Note:


test, otherwise incorrect test value might be obtained.

2) Frequency test range is 10Hz - 1kHz.‘00.0’ will be

displayed on LCD if the test frequency is lower than

10.0 Hz. It is possible to test the frequency which is

higher than 1 kHz but the tolerance of the test result

can not be ensure.


600A rms AC.

30

A

OFF

A

V

Ω

SEL

MIN

MAX

RAN Hz/%

OFF

B.L

HOLD

INRUSH

DIGITAL CLAMP


°C°F%

μmVA nμmF

MkΩ

Hz

TRMS INRUSH

COM INPUT

600V

CAT.

MAX

III

600V

31

A

OFF

A

V

Ω

SEL

MIN

MAX

RAN Hz/%

OFF

B.L

HOLD

INRUSH

DIGITAL CLAMP


°C°F%

μmVA nμmF

MkΩ

Hz

TRMS

INRUSH

COM INPUT

600V

CAT.

MAX

III

600V

4.14.2 By V range:

WARNING




600V rms AC.

4.14.2.1 Plug the black test lead into the COM jack

and the red test lead into the INPUT jack.

4.14.2.2 Set the rotary selector to the V range

position.

4.14.2.3 Press the "Hz/%" to switch to frequency

measurement.

4.14.2.4 Connect test leads to the two ends of the

source or load for measurement.


Note:

1) Frequency test range is 10Hz -10kHz. '00.0' will be

displayed on LCD if the test frequency is lower than

10.0 Hz. It is possible to test the frequency which is

higher than 10kHz but the tolerance of the test result

can not be ensure.

2) “ ” means the maximum input voltage is

600V rms AC.

32

MIN 600A

CAT III 600V

A

A

OFF

V

Ω

SEL

MIN

MAX

RAN

Hz/%

OFF

B

.

L

HOLD

INRUSH

DIGITAL CLAMP


°C°F%

μmVA nμmF

MkΩ

Hz

TRMS INRUSH

COM

INPUT

33

4.15 Measuring Duty

4.15.1 By A range ( from current clamp):

WARNING



4.15.1.1 Set the rotary selector to the A range

( A or A ) position.

4.15.1.2 Press the trigger to open jaw. Fully enclose

only one conductor.

4.15.1.3 Press the "Hz/%" to switch to the DUTY

measurement.


Note:


test, otherwise incorrect test value might be obtained.

2) If the duty cycle is less than 10%, symbol 'UL' will be

displayed on LCD; if the duty cycle is more than

94.9%, symbol 'O L' will be displayed on LCD.

3) The input signal frequency range is 10 – 1kHz. It is

possible to test duty cycle of the higher than 1 kHz

frequency signal, but the tolerance of the test result

can not be ensure.


600A rms AC.

34

A

OFF

A

V

Ω

SEL

MIN

MAX

RAN Hz/%

OFF

B.L

HOLD



°C°F%

μmVA nμmF

MkΩ

Hz

TRMS INRUSH

COM INPUT

600V

CAT.

III

MAX 600V

Correct

35

A

OFF

A

V

Ω

SEL

MIN

MAX

RAN

OFF

Hz/%

B.L

HOLD



°C°F%

μmVA nμmF

MkΩ

Hz

TRMS INRUSH

COM

INPUT

600V

CAT.

III

MAX 600V

Incorrect

4.15.2 By V range:

WARNING




600V rms AC.

4.15.2.1 Plug the black test lead into the COM jack and


4.15.2.2 Set the rotary selector to the V range position.

4.15.2.3 Press the "Hz/%" to switch to DUTY

measurement.

4.15.2.4 Connect test leads to the two end of the source

or load for measurement.


Note:

1) If the duty cycle is less than 10%, symbol 'UL' will be

displayed on LCD; if the duty cycle is more than

94.9%, symbol 'O L' will be displayed on LCD.

3) The input signal frequency range is 10 – 10 kHz. It is

possible to test duty cycle of the higher than 10 kHz

frequency signal, but the tolerance of the test result

can not be ensure.

3) “ ” means the maximum input voltage is

600V rms AC.

36

MIN 600A

CAT III 600V

A

A

OFF

V

Ω

SEL

MIN

MAX

RAN

Hz/%

OFF

B

.

L

HOLD

INRUSH

DIGITAL CLAMP


°C°F%

μmVA nμmF

MkΩ

Hz

TRMS

INRUSH

COM

INPUT

37

4.16 Measuring Resistance

WARNING


When measuring in-circuit resistance, make sure that the power of the circuit under test has been turned off and that all capacitors have been fully discharged.


the red test lead into the INPUT jack.

position to make the meter get into AC V range.

4.16.3 Auto range mode or manual range mode can be


4.16.4 Connect the test leads to the ends of the resistor

or circuit for measurement.


Note:

1) At the manual range mode, when only 'O L' is shown

on the LCD, it means the measurement has exceeded

the range. A higher range should be selected.

2) When the input is open, 'O L' will appear on the LCD

to indicate that the range has been exceeded.

3) For measuring resistance above 1MΩ, it may take

a few seconds to get a steady reading. This is normal

for high resistance reading.

38

MAX600A

CAT III 600V

A

A

OFF

V

Ω

SEL

OFF

MIN

MAX

RAN Hz/%

B.L

HOLD

INRUSH

DIGITAL CLAMP


°C°F%

μmVA nμmF

MkΩ

Hz

TRMS INRUSH

COM

INPUT

39

4.17 Testing Diode



position.

4.17.3 Press the "S E L" button to switch to test.

4.17.4 Connect the red test lead to the anode and the

black test lead to the cathode of the diode for

testing.


Note:

1) The meter will show the approximate forward voltage

drop of the diode.

2) When the test leads have been reversed or open,

'O L' will appear on the LCD.

40

MAX600A

CAT III 600V

A

A

OFF

V

Ω

SEL

OFF

MIN

MAX

RAN Hz/%

B.L

HOLD

INRUSH

DIGITAL CLAMP


°C°F%

μmVA nμmF

MkΩ

Hz

TRMS INRUSH

COM

INPUT

41

4.18 Testing Continuity

WARNING


Make sure that the power of the circuit has been turned off and the capacitors have been fully discharged before testing the continuity of a circuit.

4.18.1 Plug the black test lead into the COM jack and


position.

4.18.3 Press the "S E L" button to switch to continuity

test.

4.18.4 Connect the test leads to the two ends of the

circuit for measurement.

4.18.5 If the resistance of the circuit being tested is less


Note:

If the test leads are open or the resistance of the circuit is over 660 Ω , “O L” will appear on the LCD.

42

MAX600A

CAT III 600V

A

A

OFF

V

Ω

SEL

OFF

MIN

MAX

RAN Hz/%

B.L

HOLD

INRUSH

DIGITAL CLAMP


°C°F%

μmVA nμmF

MkΩ

Hz

TRMS INRUSH

COM INPUT

43

4.19 Measuring Capacitance

WARNING


To avoid electric shock, make sure that the capacitors have been fully discharged before measuring the capacitance of a capacitor.



4.19.2 Set the rotary selector to the range position.

4.19.3 After fully discharged the capacitor, connect the

test leads to the two ends of the capacitor for

measurement.


Note:

It may take some time (about 10 seconds for the

66mF range) for steady readings when measuring high capacity.

44

MAX600A

CAT III 600V

A

A

OFF

V

Ω

SEL

OFF

MIN

MAX

RAN Hz/%

B.L

HOLD

INRUSH

DIGITAL CLAMP


°C°F%

μmVA nμmF

MkΩ

Hz

TRMS

INRUSH

COM

INPUT

45

5. Maintenance

5.1 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.

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

batteries should be replaced.

5.1.2 Loosen the fixing screw of the battery cover and

remove it.

5.1.3 Replace the exhausted batteries with new ones.

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

origin form.

Note:

Do not reverse the poles of the batteries.

5.2 Replacing Test Leads

WARNING

The replacement must be test leads in good working condition with the same or equivalent rating: 1000V 10A.

A test lead must be replaced if the insulation layer has been damaged, e.g. the wire inside is exposed.

6. Accessories

1)

2)

3)

Test Leads: Electric Ratings 1000V 10A 1 pair (set)

Operating Manual 1 copy

1.5V AAA Battery

3 piece

46

47

HYS006700

DIGITAL CLAMP METER

DIGITAL CLAMP METER

OPERATION MANUAL

CONTENTS

1.1 Preliminary

4

CONTENTS

1.1 Preliminary

1.2 During Use

1.3 Symbols

1.4 Maintenance

2.1 Names Of Components

1

2

3

4

5

6

7

8

9

2.2 Switch, Buttons And Input Jacks

2.3 LCD (Liquid-crystal display)

3.1 General Specifications

3.2 Electrical Specifications

Note:

Note:

4.1 Holding Readings

4.2 Switching Ranges

Note:

4.3 Switching Frequency Or Duty

Note:

4.4 Switching Maximum Or Minimum Value

Note:

4.5 Switching Functions

4.6 Back Light And Clamp Lighting Bulb

Note:

4.7 Auto Power Off

4.8 Preparating For Measurement

4.9 Measuring AC Current

Note:

4.10 Measuring Inrush Current

Note:

4.11 Measuring DC Current

Note:

4.12 Measuring AC Voltage

Note:

4.13 Measuring DC Voltage

Note:

4.14 Measuring Frequency

Note:

Note:

4.15 Measuring Duty

Note:

Note:

4.16 Measuring Resistance

Note:

4.17 Testing Diode

Note:

4.18 Testing Continuity

Note:

4.19 Measuring Capacitance

Note:

5.1 Replacing The Batteries

Note:

5.2 Replacing Test Leads

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MS2108

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MS2128

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MS2108A

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