DVM821 - Multimeter VELLEMAN - Free user manual and instructions

USER MANUAL DVM821 VELLEMAN

CAT II 500 V / CAT III 300 V

DIGITAL MULTIMETER - 1999 COUNTS
DIGITALE MULTIMETER - 1999 COUNTS
MULTIMÉTRE NUMÉRIQUE - 1999 POINTS
MULTIMETRO DIGITAL - 1999 CUENTAS
DIGITAL-MULTIMETER - 1999 ZÄHLUNGEN
MULTIMETR CYFROWY - WARTOSCI DO 1999
MULTIMETRO DIGITAL - CONTAGEM ATE 1999

USER MANUAL 2
HANDLEIDING 12
MODE D'EMPLOI 22
MANUAL DEL USUARIO 32
BEDIENUNGSANLEITUNG 42
INSTRUKCJA OBSLUGI 52
MANUAL DO UTILIZADOR 62

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.

2. Used Symbols

~	AC (Alternating Current)
=	DC (Direct Current)
~	Both AC and DC
4	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

DVM821

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.

DVM821

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 312 digital multi-meter for measuring DC and AC voltages, DC current and resistance. It also offers the

DVM821

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. 312 digits, dimensions: 47 × 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 II	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:
  • temperature: 0^ to 40^ (32 to 104^ )

DVM821

○ humidity: < 80 % RH.

• storage environment:
  o temperature: -20 ^ C to 60 ^ C (-4 ^ F to 140 ^ F )
  ○ humidity: < 90 % RH

9. Specifications

• overrange: yes

9.1 DC VOLTAGE

Δ	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)

V. 03 - 20/03/2020 7 ©Velleman nv

DVM821

20 mA	10 μA
200 mA	100 μA	± (2.0 % rdg + 2 digits)

Overload protection: F0.5 A/600 V

9.4 RESISTANCE

A	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 >500V

DVM821

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 1 or -1. Set to a higher range.
• The maximum input voltage is 500V rms.

11. Current Measurement

Do not measure circuits that may contain voltages >500V

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 1 or -1. Set to a higher range.

DVM821

• The maximum input current is 500mA .

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 "Ω" 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

DVM821

There are no user-serviceable parts inside the device. Refer to an authorized dealer for service and/or spare parts.

Disconnect the test leads from the test points and remove the test leads from the measuring terminals before replacing the batteries.

• When" " is displayed, the battery should be replaced.
• Blown fuses almost always result from human error.

To replace the battery:

• Switch of the meter
• Release the screw located at the backside of the meter and gently open the housing.
• Remove the old batteries and insert new ones.

Battery: 2 × 1.5 V AAA/R03P alkaline, do not use rechargeable batteries and make sure to respect the polarity

Make sure the meter is closed tight and put the protective edge back in place before using the meter.

17. Troubleshooting

If the device beeps continuously while measuring continuity, this means that the F500 mA/600 V internal fuse is defective.

Keep in mind that a low battery level could lead to incorrect measurements.

Replace the batteries on a regular basis.

Tip: the reduced luminosity of the backlight/LCD display indicates a low battery level.

Use this device with original accessories only. Velleman nv cannot be held responsible in the event of damage or injury resulting from (incorrect) use of this device. For more info concerning this product and the latest version of this manual, please visit our website www.VELLEMAN.eu. The information in this manual is subject to change without prior notice.

© COPYRIGHT NOTICE

The copyright to this manual is owned by Velleman nv. All worldwide rights reserved. No part of this manual may be copied, reproduced, translated or reduced to any electronic medium or otherwise without the prior written consent of the copyright holder.

HANDLEIDING

1. Inleiding

9.1 TENSION CONTINUE

Protection de surcharge : 500 V DC OU VCA rms

Impédance : 450k Ω

9.3 COURANT CONTINU

10.1 MESURER LA TENSION CONTINUE

10.1 MEDIR LA TENSION DC

10.2 MEDIR LA TENSION AC

9.5 TEST DIOD I CIAGŁOŚCI OBWODU

Velleman® Service and Quality Warranty

Since its foundation in 1972, Velleman® acquired extensive experience in the electronics world and currently distributes its products in over 85 countries.

All our products fulfil strict quality requirements and legal stipulations in the EU. In order to ensure the quality, our products regularly go through an extra quality check, both by an internal quality department and by specialized external organisations. If, all precautionary measures notwithstanding, problems should occur, please make appeal to our warranty (see guarantee conditions).

General Warranty Conditions Concerning Consumer Products (for EU):

• All consumer products are subject to a 24-month warranty on production flaws and defective material as from the original date of purchase.

• Velleman® can decide to replace an article with an equivalent article, or to refund the retail value totally or partially when the complaint is valid and a free repair or replacement of the article is impossible, or if the expenses are out of proportion.

You will be delivered a replacing article or a refund at the value of 100% of the purchase price in case of a flaw occurred in the first year after the date of purchase and delivery, or a replacing article at 50% of the purchase price or a refund at the value of 50% of the retail value in case of a flaw occurred in the second year after the date of purchase and delivery.

Not covered by warranty:

• all direct or indirect damage caused after delivery to the article (e.g. by oxidation, shocks, falls, dust, dirt, humidity...), and by the article, as well as its contents (e.g. data loss), compensation for loss of profits;

• consumable goods, parts or accessories that are subject to an aging process during normal use, such as batteries (rechargeable, non-rechargeable, built-in or replaceable), lamps, rubber parts, drive belts... (unlimited list);

• flaws resulting from fire, water damage, lightning, accident, natural disaster, etc....:

• flaws caused deliberately, negligently or resulting from improper handling, negligent maintenance, abusive use or use contrary to the manufacturer's instructions;

• damage caused by a commercial, professional or collective use of the article (the warranty validity will be reduced to six (6) months when the article is used professionally);

• damage resulting from an inappropriate packing and shipping of the article;

• all damage caused by modification, repair or alteration performed by a third party without written permission by Velleman®.

• Articles to be repaired must be delivered to your Velleman® dealer, solidly packed (preferably in the original packaging), and be completed with the original receipt of purchase and a clear flaw description.

• Hint: In order to save on cost and time, please reread the manual and check if the flaw is caused by obvious causes prior to presenting the article for repair. Note that returning a non-defective article can also involve handling costs.

• Repairs occurring after warranty expiration are subject to shipping costs.

• The above conditions are without prejudice to all commercial warranties.

The above enumeration is subject to modification according to the article (see article's manual).

NL