Velleman DVM821 Manuale utente

DVM821

CAT II 500 V / CAT III 300 V

DIGITAL MULTIMETER - 1999 COUNTS

DIGITALE MULTIMETER - 1999 COUNTS

MULTIMÈTRE NUMÉRIQUE - 1999 POINTS

MULTÍMETRO DIGITAL - 1999 CUENTAS

DIGITAL-MULTIMETER - 1999 ZÄHLUNGEN

MULTIMETR CYFROWY - WARTOŚCI DO 1999

MULTÍMETRO DIGITAL - CONTAGEM ATÉ 1999

USER MANUAL 2

HANDLEIDING 12

MODE D'EMPLOI 22

MANUAL DEL USUARIO 32

BEDIENUNGSANLEITUNG 42

INSTRUKCJA OBSŁUGI 52

MANUAL DO UTILIZADOR 62

DVM821

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USER MANUAL

1. 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.

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2. 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 II-protection)

Earth

Fuse

Capacitor

Diode

Continuity

3. 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

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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.

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 III measuring

instrument. Never use this equipment in a CAT IV

environment. Never use the meter with CAT II installations when

measuring voltages that might exceed the safety margin of

500 V above earth ground. Never use the meter with CAT III

installations when measuring voltages that might exceed the

safety margin of 300 V above earth ground. 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.

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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.

4. 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.

•For instructions on replacing battery or fuse, refer to 15. Battery

replacement.

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

mild detergent for cleaning purposes.

5. During Use

Risk of electric shock during operation. Be very careful when

measuring live circuits.

•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.

•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 60 VDC or 30 VAC

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.

6. General Description

The DVM821 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

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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:

1. Display (max. 1999 counts, max. 3 ½ digits, dimensions: 47 x 15 mm)

With low-battery indication

2. Rotary switch for manual range selection

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

turn the meter on/off.

3. Input jack

Overvoltage/Installation Category

7. Overvoltage/Installation Category

The applicable categories according EN 61010-1 are:

CAT

A CAT II-rated meter is suitable for measurements in CAT I-

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 III- or 20 m apart from a CAT IV-environment. E.g. household

appliances, portable tools…

CAT

III

A CAT III-rated meter is suitable for measurements in CAT I- and

CAT II-environments, as well as for measurements on (fixed) mono-

or poly-phased appliances which are at least 10 m apart from of a

CAT IV-environment, and for measurements in or on distribution

level equipment (fuse boxes, lighting circuits, electric ovens).

8. 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 2

Only nonconductive pollution occurs. Occasionally,

temporary conductivity caused by condensation is to be

expected.(home and office environments fall under this

category)

•This device is only suitable for measurements in Pollution

degree class 2 environments.

•operating environment:

otemperature: 0 °C to 40 °C (32 to 104 °F)

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ohumidity: < 80 % RH.

•storage environment:

otemperature: -20 °C to 60 °C (-4 °F to 140 °F)

ohumidity: < 90 % RH

9. Specifications

•overrange: yes

9.1 DC VOLTAGE

Do not measure circuits that may contain voltages

> 500 V

range

resolution

accuracy

200 mV

0.1 mV

± (1.0 % rdg + 2 digits)

2000 mV

1 mV

20 V

10 mV

200 V

100 mV

500 V

1 V

± (1.2 % rdg + 2 digits)

Overload protection: 500 V DC or AC rms

Impedance: 1M Ω

9.2 AC VOLTAGE

Do not measure circuits that may contain voltages

> 500 V

range

resolution

accuracy

200 V

100 mV

± (1.5 % rdg + 3 digits)

500 V

1 V

Average sensing, calibrated to rms of sine wave

Frequency range: 40-500 Hz

Overload protection: 500 V DC or AC rms

Impedance: 450k Ω

9.3 DC CURRENT

Do not measure circuits that may contain voltages

> 500 V

range

resolution

accuracy

2000 µA

1 µA

± (1.5 % rdg + 2 digits)

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20 mA

10 µA

200 mA

100 µA

± (2.0 % rdg + 2 digits)

Overload protection: F0.5 A/600 V

9.4 RESISTANCE

Do not conduct resistance measurements on live

circuits

range

resolution

accuracy

200 Ω

0.1 Ω

± (1.0 % rdg + 5 digits)

2000 Ω

1 Ω

± (1.0 % rdg + 3 digits)

20k Ω

10 Ω

200k Ω

100 Ω

2000k Ω

1k Ω

± (1.5 % rdg + 3 digits)

Overload protection: F0.5 A/600 V fuse

9.5 DIODE AND CONTINUITY

Do not conduct diode or continuity measurements on

live circuits

range

description

test condition

display reads the

approximate forward

voltage of the diode

forward DC current ± 10 µA

reversed DC voltage ± 1.8 V

built-in buzzer sounds

if resistance < 50 Ω

open-circuit voltage ± 1.8 V

Overload protection: F0.5 A/600 V fuse

10. Voltage Measurement

Do not measure circuits that may contain voltages > 500 V

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Use extreme caution when measuring voltages higher than 60 VDC

or 30 VAC rms.

Always place your fingers behind the protective edges of the test

probes while measuring!

10.1 DC VOLTAGE MEASUREMENT

1. Set the rotary switch in the desired V position. If the voltage to be

measured is unknown beforehand, you should set the range switch in

the highest range position and then reduce gradually until the ideal

resolution is obtained.

2. Connect the test leads to the source being measured.

3. Read the voltage value on the LCD display along with the polarity of

the red lead connection.

10.2 AC VOLTAGE MEASUREMENT

1. Set the rotary switch in the appropriate V~ position.

2. Connect the test leads to the source to be measured.

3. Read the voltage value on the LCD display.

Notes

•If the range is not known beforehand, set the selector switch to a high

range and lower gradually.

•An OVER-RANGE is indicated by 1or -1. Set to a higher range.

•The maximum input voltage is 500 V rms.

11. Current Measurement

Do not measure circuits that may contain voltages > 500 V

Use extreme caution when measuring voltages higher than 60 VDC

or 30 VAC rms.

Always place your fingers behind the protective edges of the test

probes while measuring!

1. Set the rotary switch (DCA) in the desired position.

2. Open the circuit in which the current is to be measured and connect

the test leads to the circuit IN SERIES.

3. Read the current value and the polarity of the red lead connection on

the LCD display.

Notes

•If the range is not known beforehand, set the selector switch to a high

range and lower gradually.

•An OVER-RANGE is indicated by 1or -1. Set to a higher range.

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•The maximum input current is 500 mA.

12. Resistance Measurement

Do not conduct resistance measurements on live circuits. Make sure

all capacitors in the circuit are depleted.

1. Set the rotary switch in the appropriate "" range position.

2. Connect the test leads to the resistor to be measured and read the

LCD display.

3. If the resistance being measured is connected to a circuit, turn off the

power and discharge all capacitors before applying the test probes.

13. Diode Testing

Do not conduct diode or continuity measurements on live circuits.

Make sure all capacitors in the circuit are depleted.

1. Set the rotary switch in the " " position.

2. Connect the red test lead to the anode of the diode to be tested and

the black test lead to the cathode of the diode. The approx. forward

voltage drop of the diode will be displayed. If the connection is

reversed, the display will merely show a "1".

14. Continuity Testing

Do not conduct diode or continuity measurements on live circuits.

Make sure all capacitors in the circuit are depleted.

1. Set the range switch in the " " position.

2. Connect the test leads to two points of the circuit to be tested. If

continuity exists, the built-in buzzer will sound.

15. Battery Test

1. Set the range switch in the "1.5 V" or "9 V" position.

2. Connect the test leads to the source to be measured.

3. Read the value on the LCD display.

16. Battery Replacement

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

Indice

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