Sonel CMM-10 Manuel utilisateur

OPERATING MANUAL

AUTORANGING MULTIMETER

CMM-10

Version 1.7

Multimeter CMM-10 has been designed for the purpose of

measurements of AC/DC voltage, AC/DC current, resistance,

capacitance, frequency, duty cycle, temperature and also for testing

diodes and continuity.

The most important features of CMM-10 are:

•automatic or manual regulation of the measurement range,

•DATA HOLD function, which facilitates readings of

measurements in the case of insufficient lighting or in

inaccessible places,

•REL function, which allows you to make measurements relative

to a stored reference value,

•circuit continuity sound signalling,

•the function of automatic switching of the meter into the standby

mode in order to prolong the durability of batteries,

•3 7/8 digits display (5000 counts).

INTRODUCTION...................................................5

SAFETY...................................................................6

PREPARATION OF THE METER FOR

OPERATION .................................................................... 7

FUNCTIONAL DESCRIPTION............................9

4.1

MEASUREMENT SOCKETS AND ELEMENTS OF SELECTION OF THE

MEASUREMENT FUNCTION....................................................................9

4.1.1

Sockets..............................................................................10

4.1.2

Elements of selection of the measurement function...........10

4.2

LCD DISPLAY...........................................................................11

4.3

TEST LEADS..............................................................................11

INTERNATIONAL SAFETY SYMBOLS..........12

MEASUREMENTS...............................................12

6.1

DC VOLTAGE MEASUREMENTS.................................................12

6.2

AC VOLTAGE MEASUREMENTS.................................................13

6.3

DC CURRENT MEASUREMENTS.................................................14

6.4

AC CURRENT MEASUREMENTS.................................................15

6.5

RESISTANCE MEASUREMENTS ..................................................16

6.6

CONTINUITY MEASUREMENTS .................................................16

6.7

DIODE MEASUREMENTS...........................................................17

6.8

CAPACITANCE MEASUREMENTS ...............................................18

6.9

FREQUENCY OR %DUTY CYCLE MEASUREMENTS ....................18

6.10

TEMPERATURE MEASUREMENTS ..............................................18

SPECIAL FUNCTIONS.......................................19

7.1

AUTORANGING/MANUAL RANGE SELECTION............................19

7.2

RELATIVE MODE.......................................................................19

7.3

DATA HOLD FUNCTION .........................................................20

7.4

DISPLAY BACKLIGHT................................................................20

BATTERY REPLACEMENT.............................. 20

THE FUSES REPLACEMENT........................... 22

CLEANING AND MAINTENANCE ..................22

STORAGE .............................................................23

DISMANTLING AND UTILIZATION ..............24

ATTACHMENTS..................................................24

13.1

TECHNICAL DATA.....................................................................24

13.2

STANDARD EQUIPMENT............................................................27

13.3

MANUFACTURER......................................................................27

1 Introduction

The CMM-10 meter is a modern, high-quality measuring device,

which is easy and safe to use. Please acquaint yourself with the

present manual in order to avoid measuring errors and prevent

possible problems related to operation of the meter.

In the present manual we apply three kinds of warnings. These

are texts in frames, which describe possible dangers both for the

user and the meter itself. The messages starting from the word

‘WARNING:’ describe situations which imply a risk for life or health

should the recommendations presented in the present manual not

be observed. The word ‘CAUTION!’ introduces a description of a

situation where non-observance of the recommendations presented

in the present manual may imply damage for the meter. Indications

of possible problems are preceded by the word ‘Note:’.

WARNING:

The purpose of the CMM-10 meter is to realise

measurements of AC/DC voltage, AC/DC current, resistance,

capacitance, frequency, duty cycle, diode test, continuity

and temperature. Using the meter in a manner which does

not comply with the recommendations specified in the

present manual may lead to its damage and constitutes a

source of a serious risk for the user.

WARNING:

The CMM-10 meter may be operated solely by qualified and

properly authorised personnel for work at electric

installations. Using the meter by unauthorised personnel

may lead to its damage and constitutes a source of a serious

risk for the user.

WARNING:

Before using the instrument acquaint yourself with the

present manual and observe the safety regulations and

recommendations specified by the manufacturer.

2 Safety

In order to guarantee proper operation and correctness of the

obtained results it is necessary to observe the following

recommendations:

•Before commencing operation of the meter please acquaint

yourself thoroughly with the present manual,

•The instrument should be operated solely by properly qualified

personnel, who also must be trained regarding the industrial

safety regulations,

•Use great care when making measurements if the voltages are

greater than 30VAC rms or 60VDC. These voltages are

considered a shock hazard,

•Do not exceed the maximum allowable input range of any

function,

•Never ground yourself when taking electrical measurements.

Do not touch exposed metal pipes, outlets, fixtures, etc., which

might be at ground potential. Keep your body isolated from

ground by using dry clothing, rubber shoes, rubber mats, or any

approved insulating material,

•Turn off power to the circuit under test before cutting,

unsoldering, or breaking the circuit. Small amounts of current

can be dangerous,

•When using the probes, keep your fingers behind the finger

guards on the probes,

•If “OL” appears in the display during a measurement, the value

exceeds the range you have selected. Change to a higher ran-

ge,

•It is prohibited to operated the meter:

⇒If it is damaged and completely or partially out of order,

⇒If the insulation of the test leads has been damaged,

⇒If it has been stored for an excessive period of time in

inadequate conditions (e.g. if it is humid),

•Repairs must be realised solely by an authorised service

workshop.

WARNING:

Do not realise measurements in environments in which there

are inflammable gases. Otherwise operation of the meter

under such conditions may cause sparking and explosion.

CAUTION!

Input Limits

Function Maximum Input

V DC or V AC 600VDC/AC rms

mA AC/DC 500mA 250V fast acting fuse

A AC/DC 10A 250V fast acting fuse

Frequency, resistance,

capacitance, duty cycle, diode

test, continuity 250VDC/AC rms

Temperature 250VDC/AC rms

3 Preparation of the meter for operation

Having purchased the meter examine completeness of the

contents of the package.

Before measurements commence, it is necessary to realise the

following actions:

•Make sure the conditions of the batteries or accumulators

permit to realise measurements,

•Make sure the casing of the meter and the insulation of the test

leads are not damaged,

•Insert the black test lead into the negative COM terminal and

the red test lead into the other positive terminal,

•ALWAYS turn the function switch to the OFF position when the

meter is not in use. This meter has Auto OFF that automatically

shuts the meter OFF if 30 minutes elapse between uses.

WARNING:

Connection of inappropriate or damaged test leads

constitutes a risk of an electric shock with a dangerous

voltage.

Note:

On some low AC and DC voltage ranges, with the test leads

not connected to a device, the display may show a random,

changing reading. This is normal and is caused by the high-

input sensitivity. The reading will stabilize and give a proper

measurement when connected to a circuit.

4 Functional description

4.1 Measurement sockets and elements of

selection of the measurement function

CMM-10

4.1.1 Sockets

3 measurement socket 10A

Measurement socket for the purpose of measurements of

direct current up to 10A.

4 measurement socket COM

Measurement socket common for all the measurement

functions.

5 measurement socket VΩTEMPHz%mAµA

Measurement socket for all the measurement functions

except of 10A current measurements.

4.1.2 Elements of selection of the measurement function

1 5000 count Liquid Crystal Display with symbolic signs

2 Rotational selector

Selection of function:

•Temp – Celsius or Fahrenheit temperature measurement

•Hz% – frequency and duty cycle measurement

•ΩCAP –resistance, capacitance and continuity

measurement and diode testing

•V–AC and DC voltage measurement

•OFF – meter off

•10A –AC and DC current measurement up to 10A

•mA –AC and DC current measurement up to 400mA

•µA–AC and DC current measurement up to 400µA

6 MODE button

•Measurement mode selection: Ohm / Diode / Continuity /

Cap, DC / AC, Hz / %Duty

7 RANGE button

•Manual range selection

8 HOLD button

•Data Hold function

•Back Light function

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