Mastech MS2115A Manuel utilisateur

MS2115A

Digital Clamp Meter

Operation Manual

CONTENTS CONTENTS

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

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

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

1.3 Mark.........................................................3

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

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

2.1 Part Name................................................5

2.2 Switch and Button Description..................7

2.3 LCD Display.............................................7

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

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

3.2 Technique Data.......................................10

4. Operating Guidance.........................16

4.1 Reading Hold..........................................16

4.2 Measuring Range Switch.........................17

4.3 Frequency/Duty Ratio Switch...................17

4.4 Maximum/Minimum

Measurement Choice..........................18

4.5 Function Choice.......................................18

4.6 Relative Measurement

And Surge Measurement.......................19

4.7 Back Light And Clamp Head Light.............19

4.8 Automatic Power-Off ...............................20

4.9 Measurement Preparation........................20

4.10 Current Measurement.............................21

4.11 Voltage Measurement.............................22

4.12 Frequency And Duty

Ratio Measurement..............................23

4.13 Resistance Measurement.......................25

4.14 Diode Test..............................................26

4.15 Circuit Continuity Test.............................26

4.16 Capacitance Measurement.....................27

4.17 Surge Measurement...............................28

5. Maintenance......................................29

5.1 Replace Battery.........................................29

5.2 Replace Probe..........................................30

6. Attachments.......................................30

4.18 NCV Measurement.................................29

01 02

1. Safety Information

Please particularly note that inappropriate use may cause

shock or damage to the meter when using. When using the

meter, comply with common safety procedures and

completely follow the safety measures stated in the

operation manual.

In order to make full use of the meter's functions and

ensure safe operation, please carefully read and follow

the procedures in the operation manual.

The meter meets GB/T 13978-92 digital multimeter

general technology conditions, GB4793.1-1995 (IEC

61010-1, IEC 61010-2-032) electronic measurement

instrument safety requirements with secondary

pollution and over-voltage standard of CAT IV 600V

and CAT III 1000V.

Please follow the safety guidelines to ensure safe

usage of the meter. The meter will provide satisfactory

services to you if you use and protect it appropriately.

Warning

1.1 Preliminary

1.1.1 When using the meter, the user should comply with

standard safety rules:

- General shock protection

- Prevent misusing the meter

1.1.2 Please check for damage during transportation

after receiving the meter.

1.1.3 If the meter is stored and shipped under hard

conditions, please confirm if the meter is damaged.

1.1.4 Probe should be in good condition. Before use,

please check whether the probe insulation is

damaged and if the metal wire is bare.

1.2 Usage

1.2.1 When using, select the right function and

measuring range.

1.2.2 Don't measure by exceeding indication value

stated in each measuring range.

1.2.3 When measuring a circuit with the meter

connected, do not contact with probe tip

(metal part).

1.2.4 When measuring, if the voltage to be measured is

more than 60 V DC or 30 V AC (RMS), always keep

your fingers behind finger protection device

1.2.5 Do not measure voltage greater than AC 750V.

1.2.6 In the manual measuring range mode, when

measuring an unknown value, select the highest

measuring range first.

1.2.7 Before rotating conversion switch to change

measuring function, remove probe from the circuit

to be measured.

1.2.8 Don't measure resistor, capacitor, diode and

circuit connected to power.

1.2.9 During the test of currents, resistors, capacitors,

diodes and circuit connections, be careful to avoid

connecting the meter to a voltage source.

1.2.10 Do not measure capacitance before capacitor is

discharged completely.

1.2.11 Do not use the meter in explosive gas, vapor or

dusty environments.

1.2.12 If you find any abnormal phenomena or failure

on the meter, stop using the meter.

1.1.5 Use the probe table provided with the meter to

ensure safety. If necessary, replace the probe

with another identical probe or one with the same

level of performance.

03 04

1.3 Mark

Note (Important safety information. Refer to

the operation manual)

Can be used for dangerous electric conductor.

Double insulation protection (class II)

CAT III According to pulse voltage tolerance

protection level provided by IEC 61010-1

standard overvoltage (installation) level III and

pollution degree 2.

The meter complies with EU standard

Grounding

1.4 Maintenance

1.4.1 Don't try to open the meter bottom case to adjust

or repair. Such operations can only be performed

by technicians who fully understand the meter and

electrical shock hazard.

1.4.2 Before opening the meter bottom case or battery

cover, remove probe from the circuit to be measured.

1.4.3 To avoid wrong readings causing electric shock,

when " " appears on the meter display, replace

the battery immediately.

2. Description

- The meter is a portable, professional measuring

instrument with LCD display and back light for easy

reading by users. Measuring range switch is operated

by single hand for easy operation with overload

protection and low battery indicator. It is an ideal

multifunction meter for professionals, factories,

schools, fans and family use.

- The meter is used for AC current, DC current, voltage,

DC voltage, frequency, duty ratio, resistance,

capacitance measurement, circuit connection, diode

test and non-contact voltage detection.

- The meter has automatic measuring range and manual

measuring range.

- The meter has reading hold function.

- The meter has max. measuring function.

- The meter has min. measuring function.

- The meter has clamp head frequency measurement

function.

- The meter has auto power-off function.

- The meter has relative measuring function.

1.2.13 Unless the meter bottom case and the battery

cover are completely fastened completely, do

not use the meter.

1.2.14 Don't store or use the meter in the conditions

of direct sunlight, high temperature and high

humidity.

1.4.4 Clean the meter with damp cloth and mild

detergent. Do not use abrasives or solvents.

1.4.5 Power off the meter when the meter is not used.

Switch the measuring range to OFF position.

1.4.6 If the meter is not used for long time, remove the

battery to prevent the meter being damaged.

05 06

(1) Current clamp head: used for current measurement.

(2) Clamp head light

(3) Panel

(4) Trigger

(5) Function choice button (FUNC)

(6) Relative measurement button

(7) Frequency/duty ratio switch button (Hz/%)

(8) LCD display

(9) Common end jack

(10) Resistance, capacitance, voltage, frequency,

diode and continuity input jack

(11) Maximum/minimum choice button (MAX/MIN)

(12) Reading hold/Back light button (B.L/ HOLD)

(13) Transfer switch

(14) NCV indicator

2.1 Part Name

07 08

2.3 LCD Display

AC, DC ALTERNATING CURRENT, direct current

Diode, continuity

Automatic measuring range mode

Maximum measurement state

Minimum measurement state

Relative measurement mode

Automatic power-off state

LOW BATTERY

Reading hold state

Percentage (duty ratio)

Millivolt, Volt (voltage)

Amperes (Current)

Nano farad, Microfarad, Millifarad

Ohm, Kilohm, Megohm (resistance)

Hertz, Kilohertz, Megahertz (frequency)

Hz,kHz,MHz

Ω,kΩ,MΩ

nF,μF,mF

mV,V

AUTO

MAX

MIN

REL

2.2 Switch, Button And Input Jack Description

B.L/HOLD button: used for reading hold or back

light control

FUNC button: used for measuring function switch.

RANGE button: used for switching manual measuring

range state.

REL button: used for entering relative measurement

state.

Hz/% button: used for frequency and duty ratio

measurement function switch.

MAX/MIN button: used for maximum/minimum

measurement function switch.

OFF position: used for shutting off the power.

INPUT jack: voltage, resistance, frequency, duty

ratio, capacitance, diode, circuit connection input

wire connecting terminal.

COM jack: voltage, resistance, frequency, duty ratio,

capacitance, diode, circuit connection common wire

connecting terminal.

Transfer switch: used for selecting function and

measuring range.

Non-contact voltage detection

NCV

09 10

3. Specifications

Automatic measuring range and manual measuring

range.

Full measuring range overload protection.

The maximum allowable voltage between

measurement end and ground: 1000V DC or 750V AC

Operational height: maximum 2000m

Display: LCD

Displayed maximum value: 5999 digit.

Polarity indication: automatical indication, '-' means

negative polarity.

Exceeding measuring range display: '0L' or '-0L'.

Sampling rate: about 3 times/sec.

Unit display: has function and power unit display.

Auto off time: 15 min

Power supply: DC power 9V

Battery type: NEDA 1604, 6F22

Battery undervoltage indication: LCD displays

symbol.

Temperature coefficient: less than 0.1×accuracy/

Operational temperature: 18 ~28

Storage temperature: -10 50

Dimension: 238×92×50mm

Weight: about 420g (include battery)

°C

°C °C

°C~°C

The meter should be recalibrated under the condition

of 18°C~28°C, relative humidity less than 75% with

the period of one year.

3.1 General

3.2 Technical Indicators

Environment temperature: 23±5°C, relative humidity

(RH):<75%

3.2.1 True RMS Zero Input Characteristic

3.2.1.1 For measuring non-sinusoidal wave signal,

uses true RMS measuring method, which has

less error than traditional average response

measuring method.

3.2.1.2 The true RMS meter can accurately measure

non-sinusoidal wave signal, but if it is in AC

function mode, when there is no signal to be

measured (input terminal short circuit in AC

voltage mode), clamp meter may show a

reading from 1 to 50. These deviating readings

are normal. In the designated measurement

range, they will not affect the accuracy for

multimeter measuring AC.

3.2.1.3 The true RMS can be measured only when input

signal reaches a certain level. Therefore, the

measuring range of AC voltage and current

should be specified at 2% ~ 100% of full range.

3.2.2 AC Current

Accuracy

Resolution

Measuring range

±(2.0% reading + 8 digits)

60A

600A

1000A

0.01A

0.1A

- Maximum input current: 1000A AC

- Maximum input current: 0~600A: 40~400Hz;

600A~1000A: 40~60Hz

11 12

3.2.3 DC Current

Accuracy

Resolution

Measuring range

±(2.0% reading + 8 digits)

60A

600A

1000A

0.01A

0.1A

- Maximum input current: 1000A DC

3.2.4 Surge Current

Accuracy

Resolution

Measuring range

±(5% reading + 60 digits)

60A

600A

1000A

0.01A

0.1A

< 60A for reference only

Time of integration: 100ms; measurement range:

20~1000A; frequency range: 40~400Hz

3.2.5 DC Voltage

Accuracy

Resolution

Measuring range

±(0.8% reading + 4 digits)

±(0.5% reading + 5 digits)

0.1V

0.01V

0.001V

0.1mV

0.01mV60mV

600mV

60V

600V

1000V

- Input impedance: 10MΩ

- Maximum input voltage: 750V AC (RMS) or 1000V DC

Note:

In the small voltage measuring range, the probe is not

connected with the circuit to be tested, and the meter

may have fluctuating readings, which is normal and

caused by the meter's high sensitivity. This does not

affect actual measurement results.

3.2.6 AC Voltage

Accuracy

Resolution

Measuring range

±(0.8% reading + 4 digits)

±(0.6% reading + 5 digits)

0.1V

0.01V

0.001V

0.1mV

0.01mV60mV

600mV

60V

600V

750V

- Input impedance: 10MΩ

- Maximum input voltage: 750V AC (RMS) or 1000V DC

- Frequency range: 40 ~ 400Hz

Note:

In the small voltage measuring range, the probe is not

connected with the circuit to be tested, and the meter

may have fluctuating readings, which is normal and

caused by the meter's high sensitivity. This does not

affect actual measurement results.

13 14

3.2.7 Frequency

Accuracy

Resolution

Measuring range

0.01Hz

99.99Hz

- Measuring scope: 10Hz~1kHz

- The input signal range: >20A AC (RMS) (input

current will increase when the frequency to be

measured increases)

- Maximum input current: 1000A (RMS)

3.2.7.1 Clamp head measuring frequency

(through mode A):

±(1.5% reading + 5 digits)

999.9Hz 0.1Hz

3.2.7.2 Through mode V:

Accuracy

Resolution

Measuring range

0.01Hz

99.99Hz

±(1.5% reading + 5 digits)

999.9Hz 0.1Hz

0.001kHz9.999kHz

- Measuring scope: 10Hz ~ 10kHz

- The input voltage range: >20mV AC (RMS) (input

voltage will increase when the frequency to be

measured increases)

- Input impedance: 10MΩ

- Maximum input voltage: 750V AC (RMS)

3.2.7.3 Through mode HZ/DUTY:

Accuracy

Resolution

Measuring range

0.001Hz9.999Hz

99.99Hz 0.01Hz

0.001kHz9.999kHz ±(0.3% reading + 5 digits)

0.1Hz999.9Hz

99.99kHz

999.9kHz

9.999MHz

0.01kHz

0.1kHz

0.001MHz

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

- The input voltage range: > 2V (input voltage will

increase when the frequency to be measured increases)

3.2.8 Duty Ratio

Accuracy

Resolution

Measuring range

0.1-99.9% ±3.0% 0.1%

3.2.8.1 Through mode A (from clamp head):

- Frequency response: 10~1kHz

- Input current range: > 20A AC (RMS)

- Maximum input current: AC 1000A

3.2.8.2 Through mode V:

- Frequency response: 10~10kHz

- Input voltage range: > 60mV AC

- Input impedance: 10MΩ

- Maximum input voltage: 750V AC (RMS)

3.2.8.2 Through mode HZ/DUTY:

- Frequency response: 10 ~ 10MHz

- The input voltage range: > 2V AC (RMS) (input

voltage will increase when the frequency to be

measured increases)

- Maximum input voltage: 250V AC (RMS)

15 16

Accuracy

Resolution

Measuring range

±(0.8% reading + 3 digits)

3.2.9 Resistance

±(1.2% reading + 3 digits)

60MΩ

600Ω

6kΩ

60kΩ

600kΩ

6MΩ

0.001kΩ

0.1Ω

0.01kΩ

0.1kΩ

0.001MΩ

0.1MΩ

- Open circuit voltage: about 0.4V

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

Accuracy

Resolution

Measuring range

3.2.10 Circuit Continuity Test

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

0.1Ω

If the resistance of circuit to

be measured is less than

50Ω, the meter's built-in

buzzer may sound.

3.2.11 Capacitance

Accuracy

Resolution

Measuring range

±(3.0% reading + 5 digits)

9.999nF

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

99.99nF

999.9nF

9.999µF

99.99µF

999.9µF

9.999mF

99.99mF

0.001nF

0.01nF

0.1nF

0.001µF

0.01µF

0.1µF

0.001mF

0.01mF

3.2.12 Diode Test

Function Resolution

Measuring range

- Forward DC current is about 1mA

- Backward DC voltage is about 3.3V

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

0.001V Display approximate diode

forward voltage value

1) In the process of measurement, if reading hold is

required, press “HOLD/B.L” key, the value on the

display will be locked. Press “HOLD/B.L” key again

to cancel reading hold state.

4. Operating Guidance

4.1 Reading Hold

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