Velleman DVM851 User manual

DVM851

3 ½ DMM

3 ½-DIGIT DMM

MULTIMÈTRE NUMÉRIQUE LCD 3 ½

MULTÍMETRO 3 ½ DÍGITOS

3 ½-STELLIGES MULTIMETER

CYFROWY MULTIMIERNIK 3 ½

DMM 3 ½

USER MANUAL 3

GEBRUIKERSHANDLEIDING 15

MODE D’EMPLOI 28

MANUAL DEL USUARIO 41

BEDIENUNGSANLEITUNG 54

INSTRUKCJA OBSŁUGI 68

MANUAL DO UTILIZADOR 82

DVM851

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DVM851

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USER MANUAL

Introduction

To all residents of the European Union

Important environmental information about this product

This symbol on the device or the package indicates that disposal

of the device after its lifecycle could harm the environment. Do

not dispose of the unit (or batteries) as unsorted municipal waste;

it should be taken to a specialized company for recycling. This

device should be returned to your distributor or to a local

recycling service. Respect the local environmental rules.

If in doubt, contact your local waste disposal authorities.

Thank you for choosing Velleman! Please read the manual thoroughly before

bringing this device into service. If the device was damaged in transit, do

not install or use it and contact your dealer.

Used Symbols

AC (Alternating Current)

DC (Direct Current)

Both AC and DC

Risk of Electric shock. A potentially hazardous voltage

is possible.

Caution: risk of danger, refer to the user manual for

safety information.

Warning: a hazardous condition or action that may result

in injury or death

Caution: condition or action that may result in damage to

the meter or equipment under test

Double insulation (class 2-protection)

Earth

Fuse

Capacitor

Diode

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Continuity

General Guidelines

Refer to the Velleman® Service and Quality Warranty on the last

pages of this manual.

This symbol indicates: Read instructions

Not reading the instructions and manual can lead to

damage, injury or death.

This symbol indicates: Danger

A hazardous condition or action that may result in injury or

death

This symbol indicates: Risk of danger/damage

Risk of a hazardous condition or action that may result in

damage, injury or death

This symbol indicates: Attention; important

information

Ignoring this information can lead to hazardous situations.

WARNING: To avoid electrical shock always disconnect

the test leads prior to opening the housing. To prevent fire

hazards, only use fuses with the same ratings as specified

in this manual.

Remark: refer to the warning on the battery compartment

Avoid cold, heat and large temperature fluctuations. When

the unit is moved from a cold to a warm location, leave it

switched off until it has reached room temperature. This to

avoid condensation and measuring errors.

Protect this device from shocks and abuse. Avoid brute

force when operating.

Pollution degree 2-device. For indoor use only. Keep this

device away from rain, moisture, splashing and dripping

liquids. Not for industrial use. Refer to §8 Pollution

degree.

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Keep the device away from children and unauthorised

users.

Risk of electric shock during operation. Be very careful

when measuring live circuits.

There are no user-serviceable parts inside the device.

Refer to an authorized dealer for service and/or spare parts.

This is an installation category CAT 2 measuring

instrument. Never use this equipment in a CAT 3 or CAT 4

environment. Refer to §7 Overvoltage/installation

category.

Read this addendum and the manual thoroughly. Familiarise

yourself with the functions of the device before actually

using it.

All modifications of the device are forbidden for safety

reasons. Damage caused by user modifications to the

device is not covered by the warranty.

Only use the device for its intended purpose. Using the

device in an unauthorized way will void the warranty.

Damage caused by disregard of certain guidelines in this

manual is not covered by the warranty and the dealer will

not accept responsibility for any ensuing defects or

problems.

Maintenance

There are no user-serviceable parts inside the device.

Refer to an authorized dealer for service and/or spare parts.

Before performing any maintenance activities, disconnect the test

leads from the jacks.

For instructions on replacing battery or fuse, refer to §11 Battery

and fuse replacement.

Do not apply abrasives or solvents to the meter. Use a damp cloth

and mild detergent for cleaning purposes.

During Use

Risk of electric shock during operation. Be very careful

when measuring live circuits.

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Never exceed the limit value for protection. This limit value is listed

separately in the specifications for each range of measurement.

Do not touch unused terminals when the meter is linked to a circuit

which is being tested.

Never use the meter with CAT 2 installations when measuring

voltages that might exceed the safety margin of 600V above earth

ground.

Set the range selector at its highest position if the intensity of the

charge to be measured is unknown beforehand.

Disconnect the test leads from the tested circuit before rotating the

range selector in order to change functions.

When carrying out measurements on a TV set or switching power

circuits, always remember that the meter may be damaged by any

high amplitude voltage pulses at test points.

Always be careful when working with voltages above 60Vdc or 30Vac

rms. Keep your fingers behind the probe barriers at all times during

measurement.

Never perform resistance, diode or continuity measurements on live

circuits. Make sure all capacitors in the circuit are depleted.

General Description

The DVM851 is a battery-operated, hand-held 3 ½ digital multi-meter

for measuring DC and AC voltages, DC current and resistance. It also

offers the possibility of executing continuity tests and of testing diodes

and transistors. The back light is optional.

Refer to the illustration on page 2 of this manual:

Display

3 ½ digits, 7 segments, LCD: 15mm high

Back light

When this button is pushed, the backlight will illuminate your

display for approximately 5 seconds.

Rotary switch

This switch is used to select functions and desired ranges as well

as to turn the meter on/off.

Hold button

Upon pushing this button, the display will retain the last reading

and the " "-symbol will remain on the LCD until the button is

pushed again.

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"10A" jack

Insert the red test lead in this connector in order to measure a

max. current of 10A.

"COM" jack

Insert the black (negative) test lead.

"VmA" jack

Insert the red (positive) test lead in this connector to measure

voltage, resistance and current (except 10A).

Overvoltage/Installation Category

DMMs are categorized depending on the risk and severity of transient

overvoltage that might occur at the point of test. Transients are short-

lived bursts of energy induced in a system, e.g. caused by lightning

strike on a power line.

The existing categories according EN 61010-1 are:

CAT

A CAT 1-rated meter is suitable for measurements on protected

electronic circuits that are not directly connected to mains

power, e.g. electronics circuits, control signals…

CAT

A CAT 2-rated meter is suitable for measurements in CAT 1-

environments and mono-phase appliances that are connected

to the mains by means of a plug and circuits in a normal

domestic environment, provided that the circuit is at least 10m

apart from a CAT 3- or 20m apart from a CAT 4-environment.

E.g. household appliances, portable tools…

CAT

A CAT 3-rated meter is suitable for measurements in CAT 1-

and CAT 2-environments, as well as for measurements on

(fixed) mono- or poly-phased appliances which are at least 10m

apart from of a CAT 4-environment, and for measurements in

or on distribution level equipment (fuse boxes, lighting circuits,

electric ovens).

CAT

A CAT 4-rated meter is suitable for measuring in CAT 1-, CAT 2-

and CAT 3-environments as well as on the primary supply level.

Note that for all measurements on equipment for which the

supply cables run outdoors (either overhead or underground) a

CAT 4 meter must be used.

Warning:

This device was designed in accordance with EN 61010-1 installation

category CAT 2 600V. This implies that certain restrictions in use apply

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that are related to voltages and voltage peaks which can occur within

the environment of use. Refer to the table above.

This device is only suitable for measurements up to 600V in

CAT 2

Pollution Degree

IEC 61010-1 specifies different types of pollution environments, for

which different protective measures are necessary to ensure safety.

Harsher environments require more protection, and the protection

against the pollution which is to be found in a certain environment

depends mainly on the insulation and the enclosure properties. The

pollution degree rating of the DVM indicates in which environment the

device may be used.

Pollution

degree 1

No pollution or only dry, nonconductive pollution occurs.

The pollution has no influence. (only to be found in

hermetically sealed enclosures)

Pollution

degree 2

Only nonconductive pollution occurs. Occasionally,

temporary conductivity caused by condensation is to be

expected.(home and office environments fall under this

category)

Pollution

degree 3

Conductive pollution occurs, or dry nonconductive

pollution occurs that becomes conductive due to

condensation that is to be expected.

(industrial environments and environments exposed to

outside air - but not in contact with precipitation)

Pollution

degree 4

The pollution generates persistent conductivity caused

by conductive dust or by rain or snow. (exposed outdoor

environments and environments where high humidity

levels or high concentrations of fine particles occur)

Warning:

This device was designed in accordance with EN 61010-1 pollution

degree 2. This implies that certain restrictions in use apply that are

related to pollution which can occur within the environment of use.

Refer to the table above.

This device is only suitable for measurements in Pollution

degree class 2 environments.

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Specifications

This device is not calibrated when purchased!

Regulations concerning environment of use:

Use this meter only for measurements in CAT 1 and CAT 2

environments (see §7)

Use this meter only in a pollution degree 2 environment (see §8)

Ideal working conditions include:

temperature: 18 to 28°C (64°F to 82°F)

relative humidity: max. 80%

altitude: max. 2000m (6560ft)

Voltage

max. 600V

Fuse protection

F 500mA/600V, F10A/600V

Power

9V alkaline battery 6LR61

Display

LCD, 1999 counts

sampling rate

2-3/sec.

Measuring method

Dual-slope integration A/D

converter

Overrange indication

Only figure "1" on the display

Polarity indication

"-" displayed for negative

polarity

Operating temperature

0 to 40°C

Storage temperature

-10°C to 50°C

Low battery indication

appears on the display

Dimensions

138 x 69 x 31mm

Weight

Approx. 142g

9.1 DC VOLTAGE

Do not measure circuits that may contain voltages > 600V

Range

Resolution

Accuracy

200mV

100µV

0.5% of rdg 2 digits

1mV

0.8% of rdg 2 digits

20V

10mV

200V

100mV

600V

1.0% of rdg 2 digits

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9.2 DC CURRENT

Do not measure current in circuits with voltages > 600V

Range

Resolution

Accuracy

200µA

0.1µA

1% of rdg 2 digits

2mA

1µA

20mA

10µA

200mA

100µA

1.5% of rdg 2 digits

10A

10mA

3% of rdg 2 digits

Overload protection by fuse: 200mA range F 500mA/600V, 10A range

F10A/600V.

9.3 AC VOLTAGE

Do not measure circuits that may contain voltages > 600V

Range

Resolution

Accuracy

200V

100mV

1.2% of rdg 10 digits

600V

Frequency range: 40Hz to 400Hz.

9.4 DIODE & CONTINUITY

Do not conduct diode- or continuity measurements on live

circuits.

Range

Description

If continuity exists (less than 60), built-in buzzer will sound

Displays the diode's approx. forward voltage drop

9.5 RESISTANCE

Do not conduct resistance measurements on live circuits.

Range

Resolution

Accuracy

200

0.1

0.8% of rdg 2 digits

2k

1

20k

10

200k

100

2M

1k

1.0% of rdg 2 digits

Maximum open circuit voltage: 3.2V

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