Mastech MS2140A Manuel utilisateur

MS2140A

Dual display digital

clamp meter

CAT ll 1000V

MS2140A

T-RMS

Inrush

TEMP

μA

REL

ZERO

FUNC

INRUSH

HOLD

RANGE

MIN

MAX

COM Temp μAHz

ΩV

RELINP MAX MIN °C%

kHz

°F

µmVA

nµmF

MkΩHz

AUTO

K-T

NCV

MAX

1000V

Press 2Sec

CAT lll 600V

600A

TRMS

AutoRange

CUS

int erte k

308 0912

CONTENTS CONTENTS

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

1.1 Preparation..............................................1

1.2 Usage.......................................................2

1.3 .....................3 Safety symbols on the meter

1.4 Maintenance............................................4

2. ................4Features and Components

2.1 ............................................5 Components

2.2 ................................7Buttons and switches

2.3 ..................................7Display Description

3. Specification.....................................9

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

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

4. .............................16Operations Guide

4.1 ...........................................16Display Hold

4.2 ..............................16Manual Measurement

4.3 ........................16Backlight and Clamp light

4.4 ................17 Maximum/Minimum recording

4.5 ..................................17Function switching

4.6 ...............................................17ZERO/REL

5. Maintenance......................................24

5.1 ..........................24Replacing the batteries

5.2 ...........................25Test Leads Replacement

6. .......................................25Accessories

4.7 ...................................................18INRUSH

4.8 ..........................................18Auto Power Off

4.9 .............................18Measuring Preperation

4.10 .............................19Current Measurement

4.11 .............................19Voltage Measurement

4.12 ......................20Frequency and Duty Cycle

4.13 .............................................20Resistance

4.14 ..............................................21Diode Test

4.15 ...............................................21Continuity

4.16 ...........................................22Capacitance

4.17 ..................22Inrush Current Measurement

4.18 ...........................................23Temperature

4.19 ........................23μA Current Measurement

4.20 ...................23NCV Sensitivity and settings

01 02

1. Safety Information

This meter has met IEC61010-1 and IEC-61010-2-032

standards with an overvoltage category of 600V CAT III

and a pollution degree of 2. Follow safe operation

procedures to ensure the long life and safe use of this

instrument.

WARNING

1.1 Preparation

1.1.1 When using the meter, follow the following

safety rules:

-Take precautions to prevent electrical shock

-Do not misuse the instrument

1.1.2 Check the meter and accessories thoroughly

before using.

1.1.3 Check to see if the meter or any components

were damaged during shipment.

1.1.4 Inspect test leads and probes for cracks, breaks

or crazes on the insulation before using the meter.

1.1.5 Use test leads provided with the unit. If

necessary, replace test leads with identical

specifications.

1.2 Usage

1.2.1 Turn the rotary switch to the required function

and range to be measured.

1.2.2 Never use the meter to measure voltages that

might exceed 600V DC/AC above earth ground.

1.2.3 Always be careful when working with voltages

above 60V DC or 30V AC RMS. Keep fingers

behind the probe barriers while measuring.

1.2.4 The “ ” symbol next to the input lead shows

that the input voltage or current should not

exceed the specified value in order to protect the

internal circuit from damage.

1.2.5 Choose the highest range when the value to be

measured is unknown.

1.2.6 Remove test leads before switching functions on

the rotary switch.

1.2.7 Do not perform resistance, capacitance, diode

and continuity measurements on powered circuits.

1.2.8 Never connect the test leads across a voltage

source while the rotary switch is in the resistance,

diode or continuity mode. Doing so can damage

the meter.

1.2.9 Power off the circuit and discharge capacitors

before testing capacitance.

1.2.10 Do not place the meter in any environment with

high pressure, high temperature, dust, explosive

gas or vapor.

1.2.11 Stop using the meter if any failure or abnormal

function is observed.

1.2.12 Do not use meter unless battery cover is in place

a secured.

TO REDUCE THE RISK OF FIRE, ELECTRICAL

SHOCK, PRODUCT DAMAGE OR PERSONAL

INJURY, PLEASE FOLLOW THE SAFETY

INSTRUCTIONS DESCRIBED IN THE USER

MANUAL. READ THE USER MANUALS

BEFORE USING THE METER.

03 04

1.3 Safety symbols on the meter

Important safety information; please refer to

user manual

High voltage

Compliance with requirements for double

insulation

Refers to the impulse withstand voltage

protection level in accordance with IEC-61010-1

standard overvoltage (installation) category III,

pollution degree 2.

Meter complies with European Community

(CE) standards

Earth ground

1.4.1 To avoid electric shock or personal injury, repairs

or servicing not covered in this manual should be

performed only by qualified personnel.

1.4.2 Remove test leads before opening battery cover

1.4.3 To avoid incorrect readings causing electric

shock or personal injury, when low battery

symbol “ ”appears replace batteries immediately.

1.4.4 The meter can be cleaned with a soft cloth to

remove any oil, grease or grime. Do not use

liquid solvent or detergent.

1.4.5 When the instrument is not in use, turn rotary

switch to “OFF”

1.4.6 If the instrument is not to be used for an extended

period of time, remove the batteries to prevent

damage to the instrument.

1.4 Maintenance

2. Features and Components

The CM660 is a portable, hand-held yet professional

meter that features an LCD with backlight, overload

protection and low battery indicator. These meters are

easy to use with one hand, suitable for professional

users or amateurs, and ideal for school or home use.

CAT III

1.2.13 Avoid direct sunlight, exposing batteries to

humidity, any strong magnetic field, or high

temperatures to ensure the extended life of

the meter.

-Auto and manual range

-Reading Hold function

-Max measurement

-Min measurement

-Frequency in clamp mode

-Auto power off

-Relative measurement

- Inrush measurement

05 06

(1) Non-Contact Voltage detection sensor

(2)NCV indicator

(3)Work light

(4)Rotary Switch

(5)Function buttons

(6)Input sockets

(7)Clamp trigger

(8)Clamp: for current measurement

2.1 Components

CAT ll 1000V

MS2140A

T-RMS

Inrush

TEMP

μA

REL

ZERO

FUNC

INRUSH

HOLD

RANGE

MIN

MAX

COM Temp μAHz

ΩV

RELINP MAX MIN °C%

kHz

°F

µmVA

nµmF

MkΩHz

AUTO

K-T

NCV

MAX

1000V

Press 2Sec

CAT lll 600V

600A

TRMS

AutoRange

CUS

int erte k

308 0912

AC/DC

Diode, Continuity

Auto-range

Maximum/Minimum display

Inrush

Relative measurement mode

Auto Power Off

Display Hold

Percentage (Duty Cycle)

millivolts, volts, amps

nanofarad, microfarad, millifarad

Non-contact voltage

ohms, kiliohms, megaohms

hertz, kilohertz, megahertz

K-type thermocouple measurement

K-T

Hz, kHz, MHZ

nF,μF,mF

mV,V,A

AUTO

MAX /MIN

INR

REL

celcius, fahrenheit

°C,°F

Low Battery

NCV

Ω,kΩ,MΩ

07 08

2.3 Display Description

2.2 Buttons and switches

/RANGE button: backlight/switch ranges in

manual mode

FUNC button: switch measurement functions

HOLD button: hold reading on screen

REL/ZERO button: relative reading/DC zero offset

INRUSH button: measure Inrush current

MAX/MIN button: switch between max/min readings

Rotary Switch: switch between measurements

INPUT jack: voltage, current, resistance, capacitance,

diode, continuity, frequency, duty cycle,

temperature input terminal

COM jack: common input terminal

RELINP MAX MIN °C%

kHz

°F

µmVA

nµmF

MkΩHz

AUTO

K-T

NCV

09 10

3. Specifications

• Manual and Auto Mode

Power Overload Protection

Maximum Voltage Between Circuit and Ground:

1000V DC or 1000V AC

Maximum Working Height: 2000m

Display: LCD

Maximum Display Number: 5999

Auto Polarity Indication, '-'Indicates Negative

Overload Indication: '0L' Or '-0L'

Sampling Frequency: 4 Times / Sec

Units Display: Display Functions and Units.

Auto Power Off: 20 Minutes

Input Power : 4.5V DC

Battery Type: AAA

Low Battery Indication: LCD Display “ ”

Temperature: Less Than 0.1 X Specified Accuracy/°C

Working Environment Temperature: 18°C ~28°C

Storage Temperature:-10°C ~50°C

Size 238×92×50mm

Weight: ~420g (Including battery)

•

The Meter should be calibrated annually between

18°C ~ 28°C and a relative humidity less than 75%.

3.1 General Specifications

3.2 Technical Specifications

3.2.1 True RMS Characteristics

3.2.1.1 For non-sinusoidal signal measurements,

true RMS is a more accurate method of

measurement over the averaging method.

3.2.2 AC Current

Accuracy

Resolution

Range

±(1.8% of reading + 10 digits)

60A

600A

0.01A

0.1A

- Maximum input current: 600A AC

- Frequency range: 50 ~ 60Hz

3.2.3 DC Current

Accuracy

Resolution

Range

±(3% of reading + 10 digits)

60A

600A

0.01A

0.1A

-Maximum input current :600A DC

3.2.4 Inrush Current

Integration time: 100ms; Measuring range: 10 ~ 600A；

Accuracy

Resolution

Range

60A

600A

0.01A

0.1A

< 60A for reference only

±(10% reading + 60 digits)

11 12

3.2.5 DC Voltage

Accuracy

Resolution

Range

±(0.5% of reading + 3 digits)

0.1V

0.01V

0.001V

0.1mV600mV

60V

600V

-Input impedance: 10MΩ.

-Maximum input voltage:600V AC (RMS) or 600V DC

-600mV range: only by pressing RANGE button.

3.2.6 AC Voltage

Accuracy

Resolution

Range

±(0.8% of reading + 3 digits)

0.1V

0.01V

0.001V

0.1mV600mV

60V

600V

Note:

At small voltage ranges, unsteady readings will appear

before the test leads make contact with the circuit.

This is normal since the Meter is highly sensitive.

When the test leads are connected to the circuit, the

true reading will be shown.

Note:

At small voltage ranges, unsteady readings will appear

before the test leads make contact with the circuit.

This is normal since the Meter is highly sensitive.

When the test leads are connected to the circuit, the

true reading will be shown.

-Input impedance:10MΩ.

-Maximum input voltage: 600V AC (RMS) or 600V DC

-Frequency range:50 ~ 60Hz

-600mV range: only by pressing RANGE button.

3.2.7 Frequency

Accuracy

Resolution

Range

0.01Hz

60Hz

-Measuring range: 10Hz ~ 1kHz

-Input range≥1A AC (RMS) (Input current should

increase as circuit frequency increases.)

3.2.7.1 Frequency through Clamp Measuring (A Mode)

±(1.5% of reading + 5 digits)

600Hz 0.1Hz

3.2.7.2 Frequency through “V” mode:

Accuracy

Resolution

Range

0.01Hz60Hz

±(1.5% of reading + 5 digits)

0.1Hz

1Hz

-Measuring range:10Hz ~ 1kHz

-Input range≥20mA AC(RMS) (Input current should

increase as circuit frequency increases.)）

6kHz 1Hz

10Hz60kHz

600Hz

6kHz

1000V

13 14

3.2.7.3 Frequency Through “HZ” Mode:

- Input signal: VPP 3V square wave; Overload

Protection: 250V DC or AC (RMS)

3.2.8 Duty Cycle

Accuracy

Resolution

Range

5-95% ±3.0% 0.1%

Accuracy

Resolution

Range

0.01Hz

60Hz

±(0.3% of reading + 5 digits)

0.1Hz

1Hz

0.01kHz

60kHz

600Hz

6kHz

0.1kHZ

1kHZ

0.01MHZ60MHZ

600kHZ

6MHZ

Accuracy

Resolution

Range

±(0.8% of reading + 3 digits)

3.2.9 Resistance

±(1.2% of reading + 3 digits)

60MΩ

600Ω

6kΩ

60kΩ

600kΩ

6MΩ

0.001kΩ

0.1Ω

0.01kΩ

0.1kΩ

0.001MΩ

0.1MΩ

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

When measuring frequencies > 60KHz, duty cycle

measurement range is 10 to 90%

3.2.11 Capacitance

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

3.2.12 Diode

Accuracy

Resolution

Range

- Forward DC current: about 1mA

- Open circuit voltage: about 2.8V

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

0.001V Displays approximate

forward voltage.

Accuracy

Resolution

Range

3.2.10 Continuity

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

- Open circuit voltage: about 3V

0.1Ω

The Meter will beep if

measurement is less

than 50

Accuracy

Resolution

Range

±(4.0% of reading + 5 digits)

6nF

60nF

600nF

6µF

60µF

600µF

6mF

60mF

0.001nF

0.01nF

0.1nF

0.001µF

0.01µF

0.1µF

0.001mF

0.01mF

±(5.0% of reading + 5 digits)

3.2.13 Temperature

Note: The accuracy does not include K-type

thermocouple error.

During measuring, press the “HOLD” button once to

hold the reading, press again to release hold.

4. Operations Guide

4.1 Display Hold

4.2 Manual Measurement

When using the rotary switch to switch between current,

voltage, capacitance and frequency mode, the default

range type is Auto. Press “RANGE” button to enter

manual mode. Each press increases the measuring

range and will return to auto-range after maximum has

been reached.

Manual Measurement Mode is disabled when

performing frequency measurement.

Note:

4.3 Backlight and Clamp light

1) Press the “ /RANGE”button for 2 seconds to turn

on the display backlight; the backlight will stay on

for 20 seconds before it is automatically turned off.

2)When the backlight is on, press the “ /RANGE”for

2 seconds to turn off the backlight.

3) In current mode, turning on the backlight will also

trigger the clamp light

Note: Backlight/clamp light uses and LED; even

though the light will auto off after 20 seconds,

use only when needed to conserve power.

Accuracy

Resolution

Range

0.1°C/

0.2°F

±1.0% of reading + 0.8°C

(±1.0% of reading + 0.8°F)

-10°C~500°C

(-14°F to 932°F)

-40°C~ -10°C

(-40°F to -14°F)

±5.0% of reading + 1.5°C

(±5.0% of reading + 3.3°F)

3.2.14 AC µA Current

Accuracy

Resolution

Range

200.0µA 0.1µA

2000µA ±(1.0% of reading + 5 digits)

1µA

-Frequency range: 50 ~ 60Hz;

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

3.2.15 DC µA Current

Accuracy

Resolution

Range

200.0µA 0.1µA

2000µA ±(1.0% of range + 5 digits)

1µA

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

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