Mastech MS2026 Manual de usuario

MS2026

MS2026R

Use’s Manual

DIGITAL CLAMP METER

AUTO

μnF

%Hz

kMΩ

mVA

REL

MAX MIN

MS2026

FUNC.

RANGE

MAX/MIN

HOLD

Hz/%

Auto Range

AC CLAMP METER

CAT III

600 V

CONTENTS

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

1.1 Preliminary........................................1

CONTENTS

1.2 During Use.........................................2

1.3 Symbols............................................3

1.4 Maintenance......................................3

2. Description….................................4

2.1 Names of Parts..................................5

2.2 Switch, Buttons and Input Jacks...........7

2.3 LCD (Liquid-crystal display)................8

3. Specifications….............................9

3.1 General Specifications........................9

3.2 Technical Specifications.....................10

4. Operation Instruction....................15

4.1 Holding Readings..............................15

4.2 Switching REL...................................15

4.3 Switching Frequency or Duty..............15

4.4 Switching Maximum

or Minimum Value.........................16

4.5 Switching Functions..............................16

4.6 Back Light and

Clamp Lighting Bulb..........................17

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

4.8 Preparing for Measurement.................18

4.9 Measuring AC Current.........................18

4.10 Measuring AC Voltage.......................19

4.11 Measuring DC Voltage.......................20

4.12 Measuring Frequency........................21

4.13 Measuring Duty................................23

4.14 Measuring Resistance......................26

4.15 Testing Diode...................................27

4.16 Testing Continuity.............................28

4.17 Measuring Capacitance....................29

5. Maintenance...................................30

5.1 Replacing The Batteries......................30

5.2 Replacing Test Leads..........................30

6. Accessories....................................31

1. Safety Information

1.2 During Use

This meter has been designed according to IEC-61010

concerning electronic measuring instruments with an

overvoltage category CAT III 600V and pollution 2.

Follow all safety and operating instructions to ensure

safe useof 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.

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.

1.2.1 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.

1.2.11 Do not use the meter near explosive gases, steam

or dirt.

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.

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.

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.

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.

(1) Current Clamp

(2) Clamp Lighting Bulb

(3) Panel

(4) Trigger

(5) Function Switch Button (FUNC)

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

(7) manual Button (RANGE)

(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

2.1 Names of Components

9 10

AUTO

μnF

%Hz

kMΩ

mVA

REL

MAX MIN

MS2026

FUNC.

RANGE

MAX/MIN

HOLD

Hz/%

Auto Range

AC CLAMP METER

2.2 Switch, Buttons and Input Jacks

HOLD/B.L Button

- For holding the reading or control back light

FUNC Button

- For switching among measuring functions

RAN Button

- The key is the Auto/Manual measurement key.

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)

ALTERNATING CURRENT

Direct current

Diode test

Continuity buzzer

AUTO Auto range mode

The maximum value is being measured

MAX

MIN The minimum value is being measured

REL DCA zero and relative measure

Auto power off

Battery low

This indicates that the display data is

being held.

%Percent (Duty cycle)

Milli-volts, Volts (Voltage)

mV, V

AAmperes (Current)

nF, μF Nanofarad, Microfarad

Ohms,Kilo-ohms, Mega-ohms (Resistance)

Ω,kΩ, MΩ

Hz,

kHz,MHz Hertz, Kilo-hertz (Frequency),Milohertz

AUTO

μnF

%Hz

kMΩ

mVA

REL

MAX MIN

4. Operation Instruction

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.

4.1 Holding Readings

4.2 SWitching Manual or Auto Mode

Range key is the Auto/Manual measurement key

that acts with trigger. Auto measurement is

pre-set as power-on, and switches to Manual

measurement when the key is pressed one time.

In Manual measurement mode, mode will move

upward upon each press to the highest mode,

then return to the lowest mode as a loop. If press

the key over 2 seconds, the system will switch

back to Auto measurement status.

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.

4.3.2 Press the “Hz/%” button again, meter will be 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 twice,

the meter can be set to minimum 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 two

second , the meter will get back to normal test.

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.

Note:

4.5 Switching Functions

1) SELECT Key is a function selection key that acts

with trigger. Press the key can choose the needed

measurement mode: To choose DC or AC in DC/AC

status, to choose Diode or Buzzer in Diode/Buzzer

status, to choose Ohm, Cap, Diode or Buzzer in

Ohm/Cap/Diode/ Buzzer status.

2) Press the key then turn on the power, the Auto

Power-off function will be cancelled, the signal “ ”

disappears in LCD, and enter into Sleep Status

(Power-Off). Press the key then power on will have

the Auto Power-Off function.

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