Mastech MS2138/R Manuel utilisateur

MS2138/R

AC/DC DIGITAL CLAMP METER

OPERATION MANUAL

AUTO

40302010

REL

MKHz

mnVAF

FUNC.

RANGE HOLD

Hz/%

REL

AUTO-POWER OFF

600V CAT III MAX100

600V

CAT II I

MAX 600 V

COM VΩ

Press 2 Sec

OFF

100

40/400

MS2138

AC/DC CLAMP METER

Auto Range

CAT III

600 V

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Tel: 02-077-7602 หรือ 061-8268939

E-mail: [email protected] หรือ [email protected]

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CONTENTS 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........................................5

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

2.3 LCD (Liquid-Crystal Display)....................7

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..................16

4.4 Switching Manualrange

Or Auto Range ..................................16

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

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 .............................19

4.10 Measuring DC Current ...........................20

4.11 Measuring AC Voltage ............................21

4.12 Measuring DC Voltage ...........................21

4.13 Measuring Frequency ............................22

4.14 Measuring Duty .....................................24

4.15 Measuring Resistance............................27

4.16 Testing Diode.........................................28

4.17 Testing Continuity...................................29

4.18 Measuring Capacitance .........................29

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

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

5.2 Replacing Test Leads ...............................31

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

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03 04

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

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

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.

- 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.

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.

Direct current

Alternating current

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.

2. Description

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3. Specifications

3.1.1 Auto range and manual range.

3.1.2 Overrange protection is provided for all ranges.

3.1.3 Maximum voltage between terminals and earth

ground: 600V DC or 600V rms AC

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

3.1.5 Display: 4000 counts with analog bar LCD display

3.1.6 Maximum value display: 4000 digits

3.1.7 Polarity indication: automatic; '-' for negative

polarity.

3.1.8 Overrange indication: '0L' or '-0L'

3.1.9 Converter Rate: 3 times/sec; Bar graph:

30 times/sec.

3.1.10 Unit indication: function and unit.

3.1.11 Auto power off time: 15 minute.

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: 225×86×33mm

3.1.18 Weight: approximate 320g(including batteries)

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

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15 16

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 REL

1) REL key is the relative value measurement

communication transmission key that acts with trigger.

Press this key will enter into the relative value

measurement mode. The system will save the display

value in the memory as the reference value. When

doing the measurement later, the display value will be

the difference value that the entry value deducts the

reference value.

2) Press REL∆ key will enter into the Manual

Measurement Mode automatically.

3) In REL ∆ measurement status, press the key again,

the REL∆ function will be relocked.

4) Press the key in HOLD status, HOLD function will be

cancelled. The system will save the display value in

the memory as the reference value. When doing the

measurement later, the display value is the difference

that the entry value deducts the reference value.

5) Press FUNC Key or use Mode Switch will cancel

REL∆ measurement mode, and go back to the normal

mode (REL∆will disappear in the LCD).

6) OL triggering: Under REL∆ mode, OL shows when

input value larger than the allowed value of the

measurement mode. Press the key again, the relative

measurement function will be cancelled. Disable to

enter REL∆ mode when OL shows.

7) No analog section bar function under REL∆ 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.

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.

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.

4.4 SWitching Manual Or Auto Mode

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