CMM-40 - Multimeter Sonel - Free user manual and instructions

Product Type	Digital Multimeter
Brand	Sonel
Model	CMM-40
Dimensions (approx.)	180 x 85 x 45 mm
Weight (approx.)	350 g
Power Supply	9V battery (6F22 or equivalent)
Display	LCD, 6000 counts
DC Voltage Range	600 mV to 600 V
AC Voltage Range	600 mV to 600 V
DC Current Range	600 µA to 10 A
AC Current Range	600 µA to 10 A
Resistance Range	600 Ω to 60 MΩ
Capacitance Range	60 nF to 60 mF
Frequency Range	60 Hz to 60 kHz
Temperature Measurement	-40°C to 1000°C (with thermocouple)
Additional Functions	Diode test, continuity test, data hold, auto ranging
Safety Rating	CAT III 600V
Cleaning Instructions	Wipe with a dry cloth; do not use solvents
Spare Parts Availability	Test leads, battery, fuses, thermocouple probe
Manual Language	English (also available in other languages)

Frequently Asked Questions - CMM-40 Sonel

How to replace the battery in the Sonel CMM-40 multimeter?

To replace the battery, turn off the meter and remove the test leads. Open the battery compartment on the back cover. Replace the old 9V battery (6F22 type) with a new one, observing polarity. Close the compartment.

What is the maximum voltage the CMM-40 can measure?

The CMM-40 can measure DC and AC voltage up to 600 V. For higher voltages, use a proper voltage divider or a high-voltage probe.

How to use the continuity test function?

Set the rotary switch to the continuity/buzzer position (usually marked with a diode or sound icon). Insert the black test lead into COM jack and red lead into V/Ω jack. Touch the probes together; a beep indicates continuity. Then test the circuit.

Why does the display show 'OL'?

'OL' stands for Overload. It indicates the measured value exceeds the selected range. Switch to a higher range or use auto-ranging if available.

What safety precautions should I take when using this multimeter?

Always use the proper input jacks and range for the measurement. Do not exceed the maximum rated voltage (600V). Inspect test leads for damage. Remove leads from circuit before changing functions. Use personal protective equipment when necessary.

How to measure current with the CMM-40?

To measure current, insert the red lead into the appropriate jack (µA/mA or A) and black lead into COM. Set the rotary switch to the correct current range (AC or DC). Break the circuit and connect the meter in series. Do not exceed the rated fuse current.

Can I measure temperature with this device?

Yes, the CMM-40 supports temperature measurement with a thermocouple probe (type K). Set the dial to °C/°F, connect the probe to the COM and V/Ω jacks, and place the probe on the object. The display shows the temperature.

How to clean and maintain the multimeter?

Clean the exterior with a soft, dry cloth. Do not use abrasive cleaners or solvents. Keep the input jacks clean and free from dirt. Store in a dry place. Replace the battery when the low battery indicator appears.

What accessories come with the Sonel CMM-40?

Typically, the package includes: multimeter, test leads, thermocouple probe, 9V battery, and user manual. Some versions may include a carrying case. Exact accessories may vary by region.

Where can I find the user manual in other languages?

Visit the notice-facile.com website for the CMM-40 page. You can request a translation by selecting your desired language and providing your email. The manual is available in multiple languages including English, Spanish, German, French, Polish, and more.

USER MANUAL CMM-40 Sonel

INSTRUKCJA OBSŁUGI 1

USER MANUAL 37

MANUAL DE USO 71

2.1 International Safety Symbols....43

3 Preparation of the meter for operation 43

4 Functional description 44

4.1 Measurement sockets and elements of selection of the measurement function....44

4.1.1 Sockets....45

4.1.2 Elements of selection of the measurement function....45

4.2 LCD display....47

4.3 Test leads 49

5 Measurements.... 49

5.1 DC voltage measurements 49

5.2 AC voltage measurements ....50

5.3 mV voltage measurements....51

5.4 DC current measurements....52

5.5 AC current (frequency, duty cycle) measurements .....53

5.6 Resistance measurements....54

5.7 Continuity Measurements....54

5.8 Diode Measurements ....55

5.9 Capacitance measurements....56

5.10 Temperature measurements ....56

5.11 Frequency or% duty cycle measurements 57

5.12 % 4 – 20 mA measurements .....57

6 Special functions 57

6.1 Autoranging/manual range selection....57

6.2 MAX/MIN....58

6.3 Relative mode....58

6.4 DATA HOLD function 59

6.5 PEAK HOLD function 59

6.6 Display backlight 59

6.7 Data record function....60

6.8 Data memory clean function....60

6.9 Data recall function....60
6.10 Parameter setting up function....61
6.11 AC + DC function 61

7 Replacement of the batteries.... 62

8 Replacement of the fuses 63

9 Cleaning and maintenance 64

10 Storage 65

11 Dismantling and utilization 65

12 Technical data.... 66

12.1 Basic data....66
12.2 Operating data 69

13 Manufacturer.... 70

1 Introduction

We appreciate your having purchased our industrial meter. The CMM-40 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 'ATTENTION!' 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 'Caution:',

WARNING:

Before using the instrument acquaint yourself with the present manual and observe the safety regulations and recommendations specified by the manufacturer.

WARNING:

The purpose of the CMM-40 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-40 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.

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 20VAC rms or 40VDC. These voltages are considered a shock hazard,
• Before use for non-contact AC voltage measurements, always test the voltage detector on a known live circuit to verify proper operation,
• Set function switch to the appropriate position before measuring,
• When measuring volts do not switch to current/resistance modes,
• Do not exceed the maximum allowable input range of any function,
• Do not apply voltage to meter when resistance function is selected,
• When changing ranges using the selector switch always disconnect the test leads from the circuit under test,
• Do not exceed the maximum rated input limits,
• 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 with wet hands.

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.

ATTENTION!
Input Limits
Function	Maximum Input
V DC or V AC	1000V DC/AC rms
mA AC/DC	500mA 1000V fast acting fuse
A AC/DC	10A 1000V fast acting fuse (20A for 30 seconds max every 15 minutes)
Frequency, Resistance, Capacitance, Duty Cycle, Diode Test, Continuity	1000V DC/AC rms
Temperature	1000V DC/AC rms
Surge Protection: 8kV peak per IEC 61010

2.1 International Safety Symbols

This symbol, adjacent to another symbol or terminal, indicates the user must refer to the manual for further information.

This symbol, adjacent to a terminal, indicates that, under normal use, hazardous voltages may be present

Double insulation

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.

WARNING:

Connection of inappropriate or damaged test leads constitutes a risk of an electric shock with a dangerous voltage.

4 Functional description

4.1 Measurement sockets and elements of selection of the measurement function

CMM-40

4.1.1 Sockets

7 measurement socket mA, μA, 10A

Measurement socket for the purpose of measurements of direct and current.

8 measurement socket COM

Measurement socket common for all the measurement functions (connection to the mass of the device).

9 measurement socket Ω → CAP V °F °C Hz%

Measurement socket for all the measurement functions except of current measurements.

4.1.2 Elements of selection of the measurement function

1 40,000 count LCD display
2 STORE(<RECALL) button

- Saving the measurement result to the memory (recalling the result from memory)

3 MAX/MIN (-) button

- Displaying the maximum and minimum value

4 MODE button

- Changing the measurement mode

5 RANGE(SETUP) button

- Manual changing of the measurement range

6 Rotational selector

Selection of function:

• A – direct and alternative current measurement up to 4000 A ,
  • 4\~20mA% – loop current measurement,
• mA – direct and alternative current measurement up to 400mA,
• 10AHz% – direct and alternative current measurement up to 10A, frequency and duty cycle measurement,
• OFF – meter off,
• V_ACHz % – alternative voltage, frequency and duty cycle measurement,
• V_DC – direct voltage measurement,
• mV – direct and alternative voltage measurement up to 400mV,
• Hz% – frequency and duty cycle measurement,
• Ω CAP – resistance, capacitance and continuity measurement and diode testing,
• Temp – Celsius or Fahrenheit temperature measurement.

10 Backlight button

Display backlit

11 EXIT(AC+DC) button

• Exit
  • Measurement of the trms value

12 HOLD(PEAKHOLD>) button

- Holding the measurement result on the display

13 REL(+) button

- Relative measurement

4.2 LCD display

Illustration 2. LCD display of the CMM-40 meter

- continuity check mode

- diode test mode

- Battery status

n - nano (10 ^-9 ) (capacitance)

- micro (10^-6) (amps, cap)

m - milli (10 ^-3 ) (volts, amps)

A - Amps

k - kilo (10 ^3 ) (ohms)

F – Farads (capacitance)

M - mega (10 ^6 ) (ohms)

Ω - Ohms

Hz – Hertz (frequency)

% – percent (duty ratio)

AC – alternating current

DC – direct current

°C – degrees Celsius

°F – degrees Fahrenheit

MAX – maximum

MIN - minimum

No. – serial number

S - second

SET – set up parameter

AC +DC – alternating current + direct current

TRMS – true RMS

STO – store

RCL – recall

AUTO – auto range

PEAK – peak hold

V - Volts

- relative

HOLD – display hold

4.3 Test leads

The manufacturer guarantees correct measurement indications provided original test leads are used.

WARNING:

Connection of inadequate test leads constitutes a risk of electric shock with a dangerous voltage or may be a cause of measurement errors.

5 Measurements

It is recommended to get acquainted thoroughly with the contents of the present chapter since it describes the measurement systems, the manner of realisation of measurements and the basic principles of interpretation of the results.

5.1 DC voltage measurements

ATTENTION!

Do not measure DC voltages if a motor on the circuit is being switched ON or OFF. Large voltage surges may occur that can damage the meter.

In order to realise a measurement of DC voltage, it is necessary to realise the following actions:

• Set the function switch to the VDC position,
• with the RANGE button set the measurement range manually if necessary,
• Insert the black test lead banana plug into the negative COM jack. Insert the red test lead banana plug into the positive V jack,
• Touch the black test probe tip to the negative side of the circuit. Touch the red test probe tip to the positive side of the circuit,
• Read the voltage in the display,
• Having done the measurement disconnect the test leads from the meter.

5.2 AC voltage measurements

WARNING:

Risk of Electrocution. The probe tips may not be long enough to contact the live parts inside some 240V outlets for appliances because the contacts are recessed deep in the outlets. As a result, the reading may show 0 volts when the outlet actually has voltage on it. Make sure the probe tips are touching the metal contacts inside the outlet before assuming that no voltage is present.

ATTENTION!

Do not measure AC voltages if a motor on the circuit is being switched ON or OFF. Large voltage surges may occur that can damage the meter.

In order to realise a measurement of AC voltage, it is necessary to realise the following actions:

• Set the function switch to the VAC/Hz/% position,
• with the RANGE button set the measurement range manually if necessary,
• Insert the black test lead banana plug into the negative COM jack. Insert red test lead banana plug into the positive V jack,
• Touch the black test probe tip to the neutral side of the circuit. Touch the red test probe tip to the "hot" side of the circuit,
• Read the voltage in the main display and the frequency in the right auxiliary display,
• Press the MODE button to indicate "Hz",
• Read the frequency in the main display,
• Press the MODE button again to indicate “%”,
• Read the% of duty cycle in the main display,
• Press EXIT (AC+DC) for 2 seconds into the function of AC+DC. Test DC and AC True RMS,
• Having done the measurement disconnect the test leads from the meter.

5.3 mV voltage measurements

ATTENTION!

Do not measure mV voltages if a motor on the circuit is being switched ON or OFF. Large voltage surges may occur that can damage the meter.

In order to realise a measurement of mV voltage, it is necessary to realise the following actions:

• Set the function switch to the mV position,
• with the RANGE button set the measurement range manually if necessary,
• Press the MODE button to indicate "DC" or "AC", or in AC range press EXIT for two seconds and chose "AC+DC",
• Insert the black test lead banana plug into the negative COM jack. Insert the red test lead banana plug into the positive V jack,
• Touch the black test probe tip to the negative side of the circuit. Touch the red test probe tip to the positive side of the circuit,
• Read the mV voltage in the display,
• Having done the measurement disconnect the test leads from the meter.

5.4 DC current measurements

ATTENTION!

Do not make 20A current measurements for longer than 30 seconds. Exceeding 30 seconds may cause damage to the meter and/or the test leads.

In order to realise a measurement of DC current, it is necessary to realise the following actions:

• Insert the black test lead banana plug into the negative COM jack,
• For current measurements up to 4000μA DC, set the function switch to the μA position and insert the red test lead banana plug into the μA/mA jack,
• For current measurements up to 400mA DC, set the function switch to the mA position and insert the red test lead banana plug into the μA/mA jack,
• For current measurements up to 20A DC, set the function switch to the 10A/HZ/% position and insert the red test lead banana plug into the 10A jack,
• Press the MODE button to indicate "DC" on the display,
• Remove power from the circuit under test, then open up the circuit at the point where you wish to measure current,
• Touch the black test probe tip to the negative side of the circuit. Touch the red test probe tip to the positive side of the circuit,
• Apply power to the circuit,
• Read the current in the display,
• Having done the measurement disconnect the test leads from the meter.

5.5 AC current (frequency, duty cycle) measurements

ATTENTION!

Do not make 20A current measurements for longer than 30 seconds. Exceeding 30 seconds may cause damage to the meter and/or the test leads.

In order to realise a measurement of AC current, it is necessary to realise the following actions:

• Insert the black test lead banana plug into the negative COM jack,
• For current measurements up to 4000μA AC, set the function switch to the μA position and insert the red test lead banana plug into the μA/mA jack,
• For current measurements up to 400mA AC, set the function switch to the mA position and insert the red test lead banana plug into the μA/mA jack,
• For current measurements up to 20A AC, set the function switch to the 10A/HZ/% position and insert the red test lead banana plug into the 10A jack,
• Press the MODE button to indicate "AC" on the display,
• Remove power from the circuit under test, then open up the circuit at the point where you wish to measure current,
• Touch the black test probe tip to the neutral side of the circuit. Touch the red test probe tip to the "hot" side of the circuit,
• Apply power to the circuit,
• Read the current in the display. In the 10AAC range, right auxiliary display frequency,
• Press and hold the MODE button to indicate "Hz",
• Read the frequency in the display,
• Momentarily press the MODE button again to indicate “%”,
• Read the% duty cycle in the display,

• Press and hold the MODE button to return to current measurement,

• Press EXIT for 2 seconds into the function of AC+DC. Test DC and AC True RMS,

• Having done the measurement disconnect the test leads from the meter.

5.6 Resistance measurements

ATTENTION!

Measurements must not be realised in live circuits. Capacitors must be discharged.

In order to realise a measurement of the resistance it is necessary to realise the following actions:

• Set the function switch to the → CAP position,
• Insert the black test lead banana plug into the negative COM jack. Insert the red test lead banana plug into the positive jack,

- Press the MODE button to indicate “Ω” on the display,

- Touch the test probe tips across the circuit or part under test. It is best to disconnect one side of the part under test so the rest of the circuit will not interfere with the resistance reading,

- Read the resistance in the display,

- Having done the measurement disconnect the test leads from the meter.

5.7 Continuity Measurements

ATTENTION!

Measurements must not be realised in live circuits. Capacitors must be discharged.

In order to realise continuity test it is necessary to realise the following actions:

- Set the function switch to the → CAP position,

• Insert the black lead banana plug into the negative COM jack. Insert the red test lead banana plug into the positive Ω jack,
• Press the MODE button to indicate ⚪ and “Ω” on the display,
• Touch the test probe tips to the circuit or wire you wish to check,
• If the resistance is less than approximately 35 , the audible signal will sound. If the circuit is open, the display will indicate “OL”,
• Having done the measurement disconnect the test leads from the meter.

5.8 Diode Measurements

ATTENTION!

Measurements must not be realised in live circuits. Capacitors must be discharged.

In order to realise diode test it is necessary to realise the following actions:

• Set the function switch to the green → CAP position,
• Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the positive jack,
• Press the MODE button to indicate and V on the display,
• Touch the test probes to the diode under test. Forward voltage will typically indicate 0.400 to 0.700V. Reverse voltage will indicate “OL”. Shorted devices will indicate near 0V and an open device will indicate “OL” in both polarities,
• Having done the measurement disconnect the test leads from the meter.

5.9 Capacitance measurements

WARNING:

To avoid electric shock, disconnect power to the unit under test and discharge all capacitors before taking any capacitance.

In order to realise capacitance measurement it is necessary to realise the following actions:

• Set the rotary function switch to the green → CAP position,
• Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the positive Ω jack,
• Press the MODE button to indicate "F",
• Touch the test leads to the capacitor to be tested,
• Read the capacitance value in the display,
• Having done the measurement disconnect the test leads from the meter.

5.10 Temperature measurements

In order to realise temperature measurement it is necessary to realise the following actions:

• Set the function switch to the green Temp position,
• Insert the temperature probe into the input jacks, making sure to observe the correct polarity,
• Press the MODE button to indicate “°F” or “°C”,

- Touch the temperature probe head to the part whose temperature you wish to measure, keep the probe touching the part under test until the reading stabilizes (about 30 seconds),

• Read the temperature in the display,
• Having done the measurement disconnect the probe leads from the meter.

Caution:

The temperature probe is fitted with a type K mini connector. A mini connector to banana connector adaptor is supplied for connection to the input banana jacks.

5.11 Frequency or% duty cycle measurements

In order to realise frequency or% duty cycle measurement it is necessary to realise the following actions:

• Set the rotary function switch to the green Hz/% position,
• Insert the black lead banana plug into the negative COM jack and the red test lead banana plug into the positive Hz jack,
• Touch the test probe tips to the circuit under test,
• Read the frequency on the display,
• Press the MODE button to indicate “%”,
• Read the% duty cycle in the display,
• Having done the measurement disconnect the test leads from the meter.

5.12 % 4 - 20 mA measurements

In order to realise measurement it is necessary to realise the following actions:

• Set up and connect as described for DC mA measurements,
• Set the rotary function switch to the 4-20mA% position,
• The meter will display loop current as a% with 0mA=-25%, 4mA=0%, 20mA=100%, and 24mA=125%. Special functions

6 Special functions

6.1 Autoranging/manual range selection

When the meter is first turned on, it automatically goes into autoranging. This automatically selects the best range for the measurements being made and is generally the best mode for most measurements. For measurement situations requiring that a range be manually selected, perform the following:

• Press the RANGE key. The “AUTO” display indicator will turn off,
• Press the RANGE key to step through the available ranges until you select the range you want,
• To exit the manual ranging mode and return to autoranging, press EXIT.

Caution: Manual ranging does not apply for the Temperature, Continuity, Diode test, mV, current 10A and 4\~20mA functions.

6.2 MAX/MIN

Press the MAX/MIN key to activate the MAX/MIN recording mode. The display icon "MAX" will appear. The meter left auxiliary display will display and hold the maximum reading and will update only when a new "max" occurs. The display icon "MIN" will appear. The right auxiliary display meter will display and hold the minimum reading and will update only when a new "min" occurs.

To exit MAX/MIN mode press EXIT.

6.3 Relative mode

The relative measurement feature allows you to make measurements relative to a stored reference value. A reference voltage, current, etc. can be stored and measurements made in comparison to that value. The displayed value is the difference between the reference value and the measured value.

Caution: Relative mode does not operate in the 4\~20mA, diode test and continuity function.

In order to realise relative measurement it is necessary to realise the following actions:

• Perform the measurement as described in the operating instructions,

• Press the REL button to store the reading in the display and the "REL" indicator will appear on the display,

• Left auxiliary display the margin of initial value and the current value. Right auxiliary display the initial reading. Main display the reading after REL test,

• Press the EXIT button to exit the relative mode.

6.4 DATA HOLD function

The hold function freezes the reading in the display. Press the HOLD key momentarily to activate or to exit the HOLD function.

6.5 PEAK HOLD function

The PEAK HOLD function captures the peak of AC voltage or current – both AC and AC with a constant component (AC+DC, see sec. 5.5). The meter can capture negative or positive peaks as fast as 1 millisecond in duration.

To activate the function, hold the PEAK button for 2 s (signalisation with a long sound). After releasing the button the symbol PEAK will appear. At the top of the display symbols will appear: MAX in left auxiliary display, MIN in right auxiliary display.

The meter will update the display each time a lower negative, or higher positive peak occurs.

To exit the PEAK HOLD mode, press the EXIT button or choose another measurement function.

Auto Power Off feature will be disabled automatically in this mode.

Note:

While PEAK HOLD is active, autoranging is disabled, therefore it is advised to start the function after connecting test leads to the measurement point. Running PEAK HOLD before that may cause overrange symbols to appear.

6.6 Display backlight

Press the ⚙️ key to turn the backlight on. The backlight will automatically turn off after SET time. Press the ⚙️ button to exit the backlight on mode.

6.7 Data record function

In order to realise data store it is necessary to do the following:

• In the current testing mode, press STORE button one time, enter into STORE function. On the left upper corner of LCD shows NO. XXXX, which states current storage serial number,
• Then, press button PEAK HOLD to change into the initial serial number 0000. (Press again it will change back). On the right upper corner of LCD shows XXXX, which states how many current storage is used,
• Press STORE button again, enter into recording interval time set up function. On the left upper shows 0000 S, which states recording interval time; using button + and - to select, the range is 0\~255 seconds,
• When the recording interval time is 0000 S, then press STORE button again to change into manual recording. Press the STORE button again to record once,
• When the recording interval time is 1\~255 S, then press STORE button again to start recording automatically from 0000 or XXXX (chosen earlier). Recording times is showed on the left upper corner, data is showed on the right upper corner (Due to digitally limitation, there is only display preceding four numbers),
• To finish above STORE function, press EXIT button shortly.

6.8 Data memory clean function

If you want to clean all the memory data, the steps are:

• When power off, press the EXIT button long time,
• Then turn the switch from OFF to random, and release the EXIT button, the LCD will flash thrice and meantime buzzer thrice, which means all memory data have been cleaned.

6.9 Data recall function

In order to realise data recall it is necessary to do the following:

- Press STORE (◀RECALL) button two seconds to enter into RECALL function. On the left upper corner shows XXXX, which states current storage serial number. On the right upper

corner shows XXXX, which states how many current storage is used,

• Press button HOLD (PeakHOLD) shortly once to scan data from 0000 to XXXX continuously,
• Press again then scan again,
• Use button + & - to select serial number XXXX on the left upper corner and record data on the right upper corner,
• To finish above RECALL function, press EXIT button.

6.10 Parameter setting up function

In order to realise parameter setting up it is necessary to do the following:

• Press the RANGE (SETUP) button second seconds to enter into SET function,
• Then press SET shortly once, change on setting content,
• Setting content includes (in sequence):

A: upper limit buzzer alarm
B: lower limit buzzer alarm
C: auto power off time
D: turn off phonating
E: backlight time

• Use ← + - → buttons to select the parameter,
- Press SET button continuously to switch to setting content, till exiting set up to testing mode. So the updated setting content is saved. If press EXIT button in this period, all setting can't be saved.

6.11 AC + DC function

In order to use AC + DC function it is necessary to do the following:

- In all the measuring mode press EXIT button for 2 seconds to enters into AC+DC testing. The precision is the same as AC measure. LCD shows AC+DC signal,

- Press button EXIT to exit.

7 Replacement of the batteries

The CMM-40 meter is supplied by means of one 9V battery. It is recommended to use alkaline battery.

Attention:

When making measurements with a battery's mnemonic on, one must take into account additional indefinite measurement uncertainty or unstable working of the meter.

WARNING:

Should the test leads be left in the sockets during replacement of the battery, there might be a risk of electric shock with a dangerous voltage.

WARNING:

To avoid electric shock, do not operate the meter until the battery cover is in place and fastened securely.

Caution:

If your meter does not work properly, check the fuses and batteries to make sure that they are still good and that they are properly inserted.

In order to replace the battery it is necessary to do the following:

• remove all the test leads from the measurement sockets and place rotational selector in the position OFF,

• Open the rear battery cover by removing two screws (B) using a Phillips head screwdriver,

• Insert the battery into battery holder, observing the correct polarity,

• Put the battery cover back in place. Secure with the screws.

Illustration 3. Battery cover of the CMM-40 meter

8 Replacement of the fuses

WARNING:

To avoid electric shock, disconnect the test leads from any source of voltage before removing the meter cover.

In order to replace the fuses it is necessary to do the following:

• Disconnect the test leads from the meter and place rotational selector in the position OFF,
• Remove the battery cover (two "B" screws) and the battery,
• Remove the six "A" screws securing the rear cover,

• Gently remove the old fuse and install the new fuse into the holder,

• Always use a fuse of the proper size and value (0.5A/1000V fast blow for the 400mA range [SIBA 70-172-40], 10A/1000V fast blow for the 20A range [SIBA 50-199-06]),

• Replace and secure the rear cover, battery and battery cover.

WARNING: To avoid electric shock, do not operate your meter until the fuse cover is in place and fastened securely.

9 Cleaning and maintenance

This MultiMeter is designed to provide years of dependable service, if the following care instructions are performed:

1. KEEP THE METER DRY. If it gets wet, wipe it off.
2. USE AND STORE THE METER IN NORMAL TEMPERATURES. Temperature extremes can shorten the life of the electronic parts and distort or melt plastic parts.
3. HANDLE THE METER GENTLY AND CAREFULLY. Dropping it can damage the electronic parts or the case.
4. KEEP THE METER CLEAN. Wipe the case occasionally with a damp cloth. DO NOT use chemicals, cleaning solvents, or detergents.
5. USE ONLY FRESH BATTERIES OF THE RECOMMENDED SIZE AND TYPE. Remove old or weak batteries so they do not leak and damage the unit.
6. IF THE METER IS TO BE STORED FOR A LONG PERIOD OF TIME, the batteries should be removed to prevent damage to the unit.

The electronic system of the meter does not require maintenance.

10 Storage

In the case of storage of the device, the following recommendations must be observed:

• Disconnect all the test leads from the meter,
• Make sure the meter and its accessories are dry,
• In the case the meter is to be stored for a prolonged period of time, the battery must be removed from the device,

11 Dismantling and utilization

Worn-out electric and electronic equipment should be gathered selectively, i.e. it must not be placed with waste of another kind.

Worn-out electronic equipment should be sent to a collection point in accordance with the law of worn-out electric and electronic equipment.

Before the equipment is sent to a collection point, do not dismantle any elements.

Observe the local regulations concerning disposal of packages, worn-out batteries and accumulators.

12 Technical data

12.1 Basic data

“m.v.” means measured value of standard.

DC voltage measurement

Range	Resolution	Accuracy
400,00mV	0,01mV	± (0.06% m.v. + 4 digits)
4,0000V	0,0001V
40,000V	0,001V
400,00V	0,01V
1000,0V	0,1V	± (0.1% m.v. + 5 digits)

AC voltage measurement (True RMS) AC + DC

Range	Resolution	Accuracy
400,00mV	0,01mV	± (1% m.v. + 40 digits)
4,0000V	0,0001V	± (1% m.v. + 30 digits)
40,000V	0,001V
400,00V	0,01V
1000,0V	0,1V

• frequency range 50 to 1000Hz

DC current measurement

Range	Resolution	Accuracy
400,00μA	0,01μA	± (1% m.v. + 3 digits)
4000,0μA	0,1μA
40,000mA	0,001mA
400,00mA	0,01mA
10,000A	0,001A

• 20A: 30 sec max with reduced accuracy

AC current measurement (True RMS) AC + DC

Range	Resolution	Accuracy
400,00μA	0,01μA	± (1,5% m.v. + 30 digits)
4000,0μA	0,1μA
40,000mA	0,001mA
400,00mA	0,01mA
10,000A	0,001A

• 20A: 30 sec max with reduced accuracy

Caution:

Accuracy is stated at 65^ F to 83^ F ( 18^ C to 28^ C) and less than 75% RH.

AC switch according to the calibration of sine wave. It generally increase ±(2% reading + 2% full scale) if non sine wave in the wave crest less than 3.0.

Resistance measurement

Range	Resolution	Accuracy
400,00Ω	0,01Ω	± (0,3% m.v. + 9 digits)
4,0000kΩ	0,0001kΩ	± (0,3% m.v. + 4 digits)
40,000kΩ	0,001kΩ
400,00kΩ	0,01kΩ
4,0000MΩ	0,0001MΩ
40,000MΩ	0,001MΩ	± (2% m.v. + 10 digits)

Capacitance measurement

Range	Resolution	Accuracy
40,000nF	0,001nF	± (3,5% m.v. + 40 digits)
400,00nF	0,01nF
4,0000μF	0,0001μF	± (3,5% m.v. + 10 digits)
40,000μF	0,001μF
400,00μF	0,01μF
4000,0μF	0,1μF	± (5% m.v. + 10 digits)
40,000mF	0,001mF

Frequency measurement (electronic)

Range	Resolution	Accuracy
40,000Hz	0,001Hz	± (0,1% m.v. + 1 digit)
400,00Hz	0,01Hz
4,0000kHz	0,0001kHz
40,000kHz	0,001kHz
400,00kHz	0,01kHz
4,0000MHz	0,0001MHz
40,000MHz	0,001MHz
100,00MHz	0,01MHz	Not specified

- Sensitivity: 0.8V rms min. @ 20% to 80% duty cycle and <100kHz; 5Vrms min @ 20% to 80% duty cycle and >100kHz

Frequency measurement (electrical)

Range	Resolution	Accuracy
40,00Hz ... 10,000kHz	0,01Hz ... 0,001kHz	± 0,5% m.v.

- Sensitivity: 1Vrms

Duty cycle measurement

Range	Resolution	Accuracy
0,10 ... 99,0%	0,01%	± (1,2% m.v. + 2 digits)

- Pulse width: 100μs - 100ms, Frequency: 5Hz to 150kHz

Temperature measurement

Range	Resolution	Accuracy
-50.0...1200,0°C	0,1°C	± (1% m.v. + 2,5°C)
-58.0...2192,0°F	0,1°F	± (1% m.v. + 4,5°F)

* probe accuracy not included

4-20mA% loop measurement

Range	Resolution	Accuracy
-25,00 ... 125,00%	0,01%	± 50 digits

• 0mA = -25% , 4mA = 0% , 20mA = 100% , 24mA = 125%

12.2 Operating data

a) Measurement category in acc. with EN 61010-1 ....III 1000V
b) Ingress protection in acc. with EN 60529....IP67
c) Pollution degree....2
d) Power supply..... one 9V battery
e) Diode test....I=0,9mA, U₀=2,8V DC
f) Continuity test ....I<0,35mA, sound signal for R<35Ω
g) Overrange indication ....OL displayed
h) Crest factor ....≤3 at full scale up to 500V ....decreasing linearly to ≤1,5 at 1000V
i) PEAK ...... captures peaks >1ms
j) Measurements rate....2 times per second, nominal
k) Input impedance....\~10MΩ VDC & \~9MΩ VAC
I) Display....40,000 count backlit liquid crystal with bargraph
m) Store capacitance....2000
n) Size....187 x 81 x 55mm
o) Weight (includes holster)....342g
p) Fuses.... mA, μA ranges; 0.5A/1000V ceramic fast blow .... A range; 10A/1000V ceramic fast blow
q) Operating temperature 0°C to 40°C (32°F to 104°F)
r) Storage temperature....-20°C to 60°C (-4°F to 140°F)
s) Operating humidity ....max 80% up to 31°C (87°F) ....decreasing linearly to 50% at 40°C (104°F)
t) Storage humidity....<80%
u) Max. operating altitude 2000m (7000ft)
v) Auto power OFF 15 minutes (approx.) with disable feature
w) Enclosure.....double molded, waterproof
x) Compliance with the requirements specified in the following standards....EN 61010-1....EN 61010-2-032
y) Quality standard....ISO 9001

13 Manufacturer

The manufacturer of the device, which also provides guarantee and post-guarantee service is the following company:

SONEL S.A.

Wokulskiego 11

58-100 Świdnica

Poland

tel. [phone] (Customer Service)

e-mail: [e-mail]

web page: www.sonel.com

Note:

Service repairs must be realized solely by the manufacturer.

MANUAL DE USO

MULTÍMETRO INDUSTRIAL

CMM-40

CE