Metrix MX 24B Manuale utente

MX 24B

MULTIMETRE NUMERIQUE

DIGITAL MULTIMETER

MULTIMETRO DIGITALE

MULTIMETRO DIGITAL

Notice de fonctionnement page 1 Chapitre

User's manual page 14 Chapter

Bedienungsanleitung Seite 28 Kapitel

Libretto d'istruzioni pagina 42 Capitolo

Manual de instrucciones página 56 Capítulo

III

Multimètre digital portable 5000 points, avec entrée courant

1234

500mA

MX 24B

500mADC

Chapter II

5000-count portable digital multimeter, with current input

USER’S MANUAL

CONTENTS

1. GENERAL INSTRUCTIONS....................................................................................................................15

1.1. Precautions and safety measures....................................................................................................15

1.1.1. Preliminary....................................................................................................................................15

1.1.2. During use....................................................................................................................................15

1.1.3. Symbols........................................................................................................................................16

1.1.4. Instructions...................................................................................................................................16

1.2. Protection devices............................................................................................................................16

1.3. Safety devices..................................................................................................................................17

1.4. Warranty...........................................................................................................................................17

1.5. Maintenance and metrological verification.......................................................................................17

1.6. Unpacking -Repackaging................................................................................................................17

2. DESCRIPTION.........................................................................................................................................18

2.1. Selector switch.................................................................................................................................18

2.2. Keypad .............................................................................................................................................18

2.3. Display..............................................................................................................................................18

2.4. Power supply....................................................................................................................................18

2.5. Input terminals..................................................................................................................................18

3. GETTING STARTED ...............................................................................................................................19

3.1. Connecting the test leads.................................................................................................................19

3.2. Switching on the instrument.............................................................................................................19

3.3. Switching off the instrument.............................................................................................................19

3.4. Special configuration........................................................................................................................19

3.5. Multimeter maintenance...................................................................................................................19

3.5.1. Fuse self-test................................................................................................................................19

3.5.2. Battery self-test.............................................................................................................................20

3.5.3. Replacing the battery or fuses......................................................................................................20

3.5.4. Cleaning .......................................................................................................................................20

3.5.5. Storage.........................................................................................................................................20

4. FUNCTIONAL DESCRIPTION ................................................................................................................21

4.1. RANGE / AC+DC key.......................................................................................................................21

4.1.1. ADPDC / ADPAC+DC Position ....................................................................................................21

4.1.2 500 mADC / 500 mAAC+DC Position..........................................................................................21

4.1.3. 10 ADC / 10 AAC+DC Position ....................................................................................................22

4.2. MIN/MAX key....................................................................................................................................22

4.3. MEM / AUTO MEM key...................................................................................................................22

4.4 key..........................................................................................................................................22

5. TECHNICAL SPECIFICATIONS..............................................................................................................23

5.1. General.............................................................................................................................................23

5.2. Characteristics..................................................................................................................................23

5.2.1. DC voltages..................................................................................................................................23

5.2.2. AC voltages (AC and AC+DC) .....................................................................................................23

5.2.3. DC current....................................................................................................................................24

5.2.4. AC currents (AC+DC)...................................................................................................................24

5.2.5. Resistance / Continuity test..........................................................................................................24

5.2.6. Capacitance..................................................................................................................................25

5.2.7. Diode threshold voltage measurement.........................................................................................25

5.2.8. Frequencies..................................................................................................................................25

5.2.9. Safety ...........................................................................................................................................25

5.2.10. General information..................................................................................................................26

5.2.11. Environment .............................................................................................................................26

5.2.12. EMC..........................................................................................................................................26

5.3. Accessories......................................................................................................................................27

5.3.1. Supplied with the multimeter ........................................................................................................27

5.3.2. Optional........................................................................................................................................27

Chapter II

5000-count portable digital multimeter, with current input 15

1. GENERAL INSTRUCTIONS

You have just acquired a portable digital multimeter and we thank you for your confidence.

This instrument complies with the specification of IEC 61010-1 + A1 + A2, 1995, con-

cerning safety requirements for electronic measuring apparatus. To get the best service

from this instrument, read carefully this user's manual and respect the detailed safety

precautions.

The contents of this manual must not be reproduced in any form whatsoever without our

consent.

1.1. Precautions and safety measures

1.1.1. Preliminary

-This device can be used for measurements on category ΙΙΙ installations, for voltages

never exceeding 600 V (AC or DC) relative to the earth.

-Definition of overvoltage categories (cf. publication IEC 664-1) :

CAT I: The circuits of CAT I are protected by measures limiting transient

overvoltages to appropriate low level.

Example : protected electronic circuits

CAT II : The circuits of CAT II are power supply circuits of appliances or portable

equipment with transient overvoltages of an average level.

Example : appliances and portable equipment

CAT III : The circuits of CAT III are power supply circuits of power equipment with

important transient overvoltages.

Example : fixed installation or industrial equipment

CAT IV :The circuits of CAT IV may comprise very important transient

overvoltages.

Example : primary supply level

∗When using this multimeter, the user must observe all normal safety rules

concerning:

-protection against the dangers of electric current.

-protection of the multimeter against misuse.

∗For your own safety, only use the measuring probes which have been delivered with

the instrument : they conform to the IEC 61010-1 + A1 + A2, 1995 safety standard.

Before use, check that they are in good working condition.

1.1.2. During use

∗Test equipment risk assessment : Users of this equipment and or their employers

are reminded that Health and Safety Legislation require them to carry out a valid

risk assessment of all electrical work so as to identify potential sources of electrical

danger and risk of electrical injury such as from inadvertent short circuits. Where

the assessment show that the risk is significant then the use of fused test leads

constructed in accordance with the HSE guidance note GS38 "Electrical Test

Equipment for use by Electricians" should be used.

∗Never exceed the protection limit values indicated in the specifications for each type

of measurement.

Chapter II

5000-count portable digital multimeter, with current input

∗When the multimeter is linked to measurement circuits, do not touch unused

terminals.

∗When the scale of the value to be measured is unknown, check that the scale initially

set on the multimeter is the highest possible or, wherever possible, choose the

autoranging mode.

∗Before changing functions, disconnect the test leads from the circuit under test.

∗In TV repair work, or when carrying out measurements on power switching circuits,

remember that high amplitude voltage pulses at the test points can damage the

multimeter. Use of a TV filter will attenuate any such pulses.

∗Never perform resistance or continuty measurements on live circuits.

1.1.3. Symbols

Symbols used in this manual and on the instrument :

CAUTION : Refer to the instruction manual.

Incorrect use may result in damage to the device or its components.

DANGER : High voltage, risk of electric shock.

Earth

1.1.4. Instructions

∗Before opening the instrument, always disconnect from all sources of electric

current and make sure not to be loaded with static electricity, which may destroy

internal components.

∗Fuses must be replaced with fuses of the same rating and type.

∗Any adjustment, maintenance or repair work carried out on the multimeter while it

is live should be carried out only by appropriately qualified personnel, after

having taken into account the instructions in this present manual.

A "qualified person" is one who is familiar with the installation, construction and

operation of the equipment and the hazards involved. He is trained and

authorized to energize, de-energize circuits and equipment in accordance with

established practices.

∗When the instrument is open, remember that some internal capacitors can retain

a dangerous potential even after the instrument is powered down.

∗If any faults or abnormalities are observed, take the instrument out of service and

ensure that it cannot be used until it has been checked out.

∗ It is recommended to remove the battery from the instrument if not used.

1.2. Protection devices

This instrument is fitted with various protection devices :

∗Varistor protection for limiting transients of over 1100 V at the VΩterminal,

particularly 6 kV pulse streams as defined in French standard IEEE 587.

∗A PTC (positive temperature coefficient) resistor protects against permanent

overvoltages of up to 600 V during resistance, capacitance, continuity and diode

test measurements. This protection is reset automatically after overload.

Chapter II

5000-count portable digital multimeter, with current input 17

∗Two HBC fuses provide protection up to 600 V during measurements of intensity

type.

∗An IP protection rating of 40.

1.3. Safety devices

∗The battery unit cannot be accessed without first disconnecting the measuring

leads.

∗When measuring voltages above 24 V, the sign blinks on the display.

∗When measuring voltages above 10 A, the sign blinks on the display and an

intermittent audible signal warns the user.

∗If the maximum range is repeatedly exceeded, an intermittent audible signal warns

the user in VLOW Z, VAC+DC, VDC,ADPDC, ADPAC+DC, 500 mADC, 500 mAAC+DC,

10 ADC, 10 AAC+DC functions.

1.4. Warranty

This equipment is warranted against any defects of manufacture or materials according to

the general conditions of sale.

During the warranty period (3 years), defective parts will be replaced, the manufacturer

reserving the right to repair or replace the product. In the event of the equipment being

returned to the distributor or to a local agency, carriage to the centre shall be payable by

the customer. The warranty does not cover the following :

1. Repairs necessitated by misuse of the equipment or use in association with

incompatible equipment.

2. Modification of the equipment or any related software without the explicit

authorization of the manufacturer.

3. Repairs necessitated by attempts to repair or maintain the product made by a person

not approved by the manufacturer.

4. Adaptation to a specific application not provided for in the specifications of the

equipment or the user manual.

5. Damage after a drop, a shock or flooding.

1.5. Maintenance and metrological verification

Return your instrument to your distributor for any work to be done within or outside the

guarantee.

1.6. Unpacking -Repackaging

This equipment has been fully checked out mechanically and electrically before shipping.

All precautions have been taken to ensure that the instrument arrives at its destination

undamaged. However, it is advisable to carry out a rapid check for damage sustained in

shipping. If there is any evidence of damage, make this known immediately to the

shipper.

GShould you need to return the multimeter, preferably use the original packaging

and indicate the reasons as clearly as possible on an accompanying note.

FOur products are patented in FRANCE and internationally and the logotypes are

registered. We reserve the right to modify specifications and prices as required by

technological improvements.

Chapter II

5000-count portable digital multimeter, with current input

2. DESCRIPTION

This compact multimeter is a self-contained with an appropriate mechanical construction,

enables hand-held version, with a protective elastomer case.

It is designed for a high degree of user safety, maximum protection and unrivalled

performance.

2.1. Selector switch

This multimeter is a standalone, hand-held professional measuring instrument, capable of

measuring the following quantities (accessed by the twelve-position rotary selector switch) :

∗AC voltages with AC (or RMS) capacitive coupling (Input impedance : 500 kΩ)

∗AC voltages with AC+DC (or TRMS) direct coupling

∗DC voltages

∗DC / AC+DC voltages, range 500 mV

∗AC currents with AC+DC (or TRMS) direct coupling

∗DC currents

∗resistance values

∗continuity (with beeper)

∗capacitance

∗diode threshold voltage

∗frequencies

2.2. Keypad

A four-key keypad lets you :

∗select the autoranging mode (RANGE / AC+DC key)

∗store a value (MEM key)

∗activate the MIN-MAX-AVG detection mode (MIN/MAX key)

∗select a function derived from the main function, or switch on the multimeter again

after it has been shut down automatically (RANGE / AC+DC key)

∗activate back lighting of the display unit ( key)

2.3. Display

This multimeter display provides :

∗perform 5 000-count measurements (50 000-count Hz-measurement),

∗function indicator (V, A, AC+DC, F, Hz, , Ω, , AUTO, MEM, MIN, MAX, AVG)

and multiplicator (n, µ, m, k, M),

∗battery discharged indicator BAT : approximately 12 hours of operation,

∗clearly legible figures (11 mm high),

∗an analogue readout of the parameter being measured through a 34-segment

bargraph.

Display back light when required in poor lighting conditions. automatic switch-off.

2.4. Power supply

This multimeter is powered by a standard 9V battery (6LF22) which provides

approximately 500 hours of operation (on function VDC).

2.5. Input terminals

Measurements are performed using two measuring leads supplied with the instrument

connected to input terminals 1, 2, 3 and 4, as indicated in section 3.1.

Chapter II

5000-count portable digital multimeter, with current input 19

3. GETTING STARTED

3.1. Connecting the test leads

Connect the black lead to the COM socket (for all measurements). Depending on the

position of the selector switch, connect the red lead as follows:

Rotary selector switch position Input terminal

VLOW Z, VAC+DC, VDC,ADPDC (ADPAC+DC), FREQ, , Ω, , V Ω

500 mADC (500 mAAC+DC)500 mA

10 ADC (10 AAC+DC)10 A

3.2. Switching on the instrument

The selector switch is on the OFF position.

Turn the selector switch to the required function.

All segments of the display come on for a few seconds. The instrument is then ready for

measurements.

3.3. Switching off the instrument

The instrument can be switched off manually by returning the selector switch to the OFF

position, or automatically after approximately half an hour if no key is pressed or the

switch is not operated.

FNote For user safety, automatic shutdown is also disabled when a measured

magnitude (voltage/current) present at the input exceeds dangerous level

(indicator displayed).

3.4. Special configuration

To adapt the configuration of the instrument to the measurement environment, the user

can choose 50 Hz or 60 Hz rejection :

Switch on with the rotary switch while holding down the MEM key. The selection is

reversed from the last configuration, is displayed for two seconds and remains backed

up in non-volatile memory.

3.5. Multimeter maintenance

3.5.1. Fuse self-test

This check can be carried out with the multimeter in use without opening up the casing.

-0.63 A fuse (F1) : set the rotary switch to the position and short-circuit the 500 mA

and VΩsockets. The display should read approx. 0.001 V. If the digital display indicates

an overflow « .OL ». The fuse is blown.

-10 A fuse (F2) : set the rotary switch to the position and short-circuit the COM and V

Ωsockets. The display should read approx. 0.001 V. If the digital display indicates an

overflow « .OL ». The fuse is blown.

Chapter II

5000-count portable digital multimeter, with current input

3.5.2. Battery self-test

When the “BAT” indication appears on the display, the instrument still has approximately

12 hours of operation, but specifications can no longer be guaranteed.

Replace the battery.

Before changing the used battery, please ensure that the “Bat” symbol

lights up, including when there is no signal at the multimeter input.

3.5.3. Replacing the battery or fuses

GCaution ! Disconnect test leads from any circuit under test, turn the meter off

and remove test leads from the input terminals .

Use the following procedure:

1 -Disconnect test leads from any inputs terminals

2 -Using a appropriate tool, make slide the case bottom of the instrument

3 -Replace the battery or fuse (respect the value and the type).

4 -Replace the immovable part.

GFitting the fuses :

Those fuses are correctly fitted ; those ones are not.

3.5.4. Cleaning

Clean the instrument using a damp cloth and soap. Never use abrasive or solvents.

3.5.5. Storage

To guarantee the measurement accuracy, after a long period storage in extreme

environment conditions, wait enough time for the instrument to acclimatise to the

working environment conditions (see environment specifications).

Fuses must be replaced

by fuses of the same

rating and type.

6LF22

9 V BATTERY

F1 0.63 A HBC18 kA / 600 V F2 10 A HBC 50 kA / 600 V

Chapter II

5000-count portable digital multimeter, with current input 21

4. FUNCTIONAL DESCRIPTION

4.1. RANGE / AC+DC key

The RANGE key is operative in following positions of the selector switch :

VLOW Z, VAC+DC, VDC, Ω, .

This key makes it possible :

•In AUTO (Autoraging) mode to switch to MANUAL mode (short press).

•In MANUAL mode, to select the next range (short press) or return to AUTO mode

(long press), the AUTO sign appears on the display.

This can be used to switch on the multimeter again after an automatic shutdown. It can

also be used to access secondary functions associated with the selector switch positions :

mode AC+DC.

The flowcharts below define these various functions.

4.1.1. ADPDC / ADPAC+DC Position

This function is adapted for accessories with mV output.

4.1.2. 500 mADC / 500 mAAC+DC Position

ADPAC+DC

AC+DC voltage measurement (TRMS)

(Range 500 mVAC+DC)

500 mAAC+DC

AC+DC current measurement (TRMS)

(Range 500 mAAC+DC)

ADPDC

DC voltage measurement

(Range 500 mVDC)

500 mADC

DC current measurement

(Range 500 mADC)

AC+DC key

The AC+DC sign

appears on the display.

The AC+DC sign

appears on the display.

Indice

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