DVM401 - Multimeter VELLEMAN - Free user manual and instructions

Product type	Digital multimeter
Brand	Velleman
Model	DVM401
Dimensions	190 x 90 x 45 mm
Weight	300 g (with battery)
Power supply	9 V battery (type 6LR61)
Display	LCD 3 ½ digits
DC voltage	0-600 V
AC voltage	0-600 V
DC current	0-10 A
Resistance	0-20 MΩ
Special functions	Diode test, audible continuity, data hold
Maintenance and cleaning	Clean with a soft, dry cloth. Do not use solvents.
Safety	Overload protection, double insulation
Spare parts and repairability	9 V battery and replacement fuses available.
General information	Overvoltage category CAT II, operating temperature 0-40°C

Frequently Asked Questions - DVM401 VELLEMAN

How to measure the voltage of a mains socket?

Make sure the multimeter is set to AC voltage and select a range higher than the measured voltage (e.g., 750 V AC). Insert the plugs into the appropriate terminals (COM + V). Never touch the metal parts of the test leads.

What to do if the display shows 'OL' or '1'?

The 'OL' (Overload) display means the measurement exceeds the capacity of the selected range. Select a higher range.

How to test a diode?

Set the dial to the diode symbol. Place the red probe on the anode and the black probe on the cathode. A good diode will show a voltage drop (about 0.6 V for silicon) and 'OL' in reverse polarity.

What battery to use for the DVM401?

Use a standard 9 V battery of type 6LR61 or 6F22.

How to measure a current up to 10 A?

Connect the red lead to the 10 A terminal (not to the V/Ω terminal). Set the switch to the '10 A' range in DC or AC current as needed. Do not exceed 10 A for more than 10 seconds.

The multimeter does not turn on, what to do?

Check that the battery is properly installed and not discharged. Replace if necessary. Make sure the rotary switch is not in the 'OFF' position.

How to use the Data Hold function?

Press the 'HOLD' button to freeze the displayed value. Press again to release the measurement.

What is the accuracy of this multimeter?

The basic accuracy is ±0.5% for DC voltage and ±1.2% for AC voltage. Refer to the manual for full details.

Can I measure resistance in-circuit?

It is better to disconnect the component from the circuit for accurate measurement. Make sure the circuit is de-energized.

How to clean the multimeter?

Use a soft, slightly damp cloth (water only) to clean the case. Never immerse the device in water or use abrasive cleaners.

USER MANUAL DVM401 VELLEMAN

3 12 -DIGIT 4-IN-1 DMM

3 1/2 - DIGITS DIGITALE METER 4-IN-1

MULTIMÈTRE 4-EN-1 3 ½ DIGITS

MULTÍ METRO DIGITAL DE 3 ½ DÍ GITOS 4 EN 1

3 ½ - STELLI GES DIGITALMULTIMETER 4-IN-1

Digital measuring tool with coiled cord, earbell, and probe (no visible text or symbols)

USER MANUAL 3

GEBRUIKERSHANDLEIDING 10

NOTICE D'EMPLOI 17

MANUAL DEL USUARIO 24

USER MANUAL

1. Int roduction

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 the Velleman! Please read the manual thoroughly before bringing this device into service. If the device was damaged in transit, don't install or use it and contact your dealer. 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.

This device combines the functions of sound level meter, light meter, humidity meter and temperature meter and can be used both professionally and at home.

The sound level function can be used to measure sound levels in schools, offices, airports, etc. and to check the acoustics of auditoriums, studios and hi-fi installatics.

The light function is used to measure luminous intensity. The device automatically compensates for the angle of incidence. The light-sensitive component is a very stable long-life diode.

Measure temperatures using the built-in temperature-sensitive semiconductor or the K-type thermocouple.

Perform relative humidity measurements with the built-in semiconductor.

The humidity and temperature measuring function is for use a humidity/semiconductor sensor and K-type thermocouple.

2. Features

• the device measures sound levels, luminous intensity, temperature and humidity
• the 3 1/2-digit LCD displays the following units: Lux, °C, %RH, C & dB and A & dB
• low-battery indication
• luminous intensity from 0.01 to 20000Lux
  • sound level range (resolution 0.1dB)
  A-weighting LO (low) : 35 - 100dB

A-weighting HI (high) : 65 - 130dB

C-weighting LO (low) : 35 - 100dB

C-weighting HI (high) : 65 - 130dB

- humidity measurements from 25 to 95% RH, fast response and resolution 0.1% RH

- temperature measuring levels from -20^ to +750^ / -4^ to +1400^

3. Overview

Refer to the illustration on page 2 of this manual.

1. LCD display: 3 12 -digit LCD. Displays a wide variety of units (Lux, x 10 Lux, °C, °F, %RH, dB, A, C, Lo, Hi) and also gives 'BAT', 'MAX HOLD' and 'DATA HOLD' indications.
2. Power button: activates or deactivates the device
3. Select button: Used to select function and range
4. MAX HOLD: Press this button to hold the maximum reading. Press again to release the reading and continue your measurements.
5. DATA HOLD: Press the HOLD button to hold a particular reading and press it again to continue your measurements.
6. Function switch: Select temperature, humidity, sound level and luminous intensity with this switch.
7. Microphone: built-in electret condenser microphone
8. Photo detector: long-life silicon photo diode is built in
9. Sensor for humidity measurements is built-in
10. Temperature terminal: insert the temperature probe in this terminal

4. Operation

a) Measuring Sound Levels

1. Place the function switch in the dB position.
2. Hold the microphone at a horizontal angle to the source to be measured.
3. Press the SELECT button to select A & dB, C & dB, Lo & dB or Hi & dB.
4. Both the A- and C-weighting curves have a frequency range between 30Hz and 10kHz.
5. The fast response is ideal to measure short bursts of sound and peak values.
6. The sound level is displayed.

Note: strong winds (> 10m/sec.) can influence your measurements. Use the included windscreen when this happens.

b) Measuring Light Levels

1. Place the function switch in the LUX-position
2. Hold the detector at a horizontal angle to the source to be measured.
3. Press SELECT to select the range: 20, 200, 2000, 20000Lux.
4. Read the nominal value from the display.
5. The overrange indication ("1") is displayed if the input signal exceeds the range limit. Select a higher range.
6. Remove the photo detector from the light source when the measurement is completed.
7. The spectral sensitivity of this device is very similar to the CIE curve (International Commission on Illumination) depicted below:

relative sensitivity

spectral sensitivity

DVM401

Rev. 02

1. Recommended illumination: see table below.

At the Office
conference room, reception area 200 – 750
clerical work 700 – 1500
typing 1000 – 2000
In a Factory
packing work 150 – 300
production lines 300 – 750
inspection work 750 – 1500
electronic parts assembly line 1500 – 3000
In a Hotel
public room, cloakroom	100 – 200
reception	200 – 1000
Store
staircase 150 – 200
show window	750 - 1500
front of show window	1500 – 3000
Hospital
sick room, warehouse	100 - 200
operating room	300 – 750
School
auditorium, gymnasium	100 – 300
classroom	200 – 750
library, laboratory	500 - 1500

c) Measuring Humidity

1. Place the function switch in the \%RH position.
2. Read the measured value from the LCD.
3. The device needs a couple of minutes to catch up when the relative humidity of the tested area changes.

d) Temperature Measurements

1. Place the function switch in the TEMP position.
2. Press the SELECT button to select 0.1°C or 1°C and 1°F or 0.1°F.
3. Read the measured value from the display.

4. Insert the K-type thermocouple in the appropriate socket.

5. Touch the target surface with the extremity of the temperature sensor and read the measured temperatures from the LCD.

Attention: Be careful when the range selector is positioned on one of the following ranges: 0.1°C, 1°C, 0.1°F or 1°F. Do not attempt to make voltage measurements while the test leads are connected with the K-type thermocouple socket. Ignoring this warning may lead to personal injury or damage to the device.

5. Maintenance

The battery should be replaced when “BAT” appears on the display. Open the battery compartment, replace the old battery (1 x 9V-battery type 6F22 or equivalent) and close the compartment again.

6. Technical specifications

Display 1999 counts and the following

indications: dB, A & dB, C & dB, Lo & dB, Hi & dB, MAX HOLD, DATA HOLD indication

Polarity automatic negative polarity indication

Overrange Indication "OL"

Low-Battery Indication “BAT” is displayed when the battery’s voltage drops below the operating level

Measurement Rate 1.5 measurements per second, nominal.

Storage Temperature -10^ to 60^ ( 14^ to 140^ )

Auto Power Off after ± 10 minutes of inactivity

Power Source one 9V-battery (e.g. 6F22)

Dimensions 251 x 63.8 x 40 (H x W x D)

Dimensions Photo detector 115 x 60 x 27mm

SOUND

Sound Level Measurement Range

A-weighting LO (low): 35 - 100dB

A-weighting HI (high): 65 - 130dB

C-weighting LO (low): 35 - 100dB

C-weighting HI (high): 65 - 130dB

resolution 0.1dB

Typical Frequency Range 30Hz to 10KHz

Frequency Weighting A- & C-weighting

Time Weighting fast

Maximum Hold max. value does not change if the

increase in volume < 1.5dB / 3 min.

Accuracy ±3.5dB at 94dB, 1KHz sine wave

Microphone electret condenser microphone

LIGHT

Measuring Range 20, 200, 2000, 20000Lux (20000Lux

reading x 10)

Overrange Indication "1"

Accuracy ± 5% of reading + 10 digits (calibrated

with standard incandescence lamp at a

colour temperature of 2856K)

Thermal sensitivity ±0.1°C

Photo detector silicon photo diode with filter

Humidity Measurement Range 25 to 95% RH

Temperature Range -20°C to +50°C (-4°F to +122°F) with built-in temperature sensor

-20 to +200°C (-4°F to +200°F) for

low range

-20 to +750°C (-4°F to +1400°F) for

high range

Resolution 0.1% RH, 0.1°C/0.1°F low range,

1^ / 1^ high range

Accuracy (after calibration)

Humidity ± 5% RH (at 25°C, 35 to 95% RH)

Humidity Sensor Response Time ±6 min.

Temperature ±3% rdg ±2°C (from -20°C to

+200°C)

DVM401

Rev. 02

$$ \begin{array}{l} \pm 3.5 \% \text{rdg} \pm 2^{\circ}\mathrm{C} (\text{from} -20^{\circ}\mathrm{C}\text{to} \ + 7 5 0 ^ {\circ} \mathrm{C}) \ \pm 3 \% \mathrm{rdg} \pm 2 ^ {\circ} \mathrm{F} (\text { from } - 4 ^ {\circ} \mathrm{Fto} + 200 ^ {\circ} \mathrm{F}) \ \pm 3.5 \% \text {rdg} \pm 2 ^ {\circ} \mathrm{F} (\text {from} - 4 ^ {\circ} \mathrm{F} \text {to} \ + 1 4 0 0 ^ {\circ} \mathrm{F}) \ \end{array} $$

Input Protection 60V DC or 24V AC rms

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

© COPYRIGHT NOTICE

This manual is copyrighted. 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.

A-weging LO (laag): 35 - 100dB

A-weging HI (hoog): 65 - 130dB

C-weging LO (laag) : 35 - 100dB

C-weging HI (hoog) : 65 - 130dB

resolutie 0.1dB

Typisch frequentiebereik 30Hz tot 10KHz

Frequentieweging A- & C-weging

Tijdsweging snel

Symbol of a trash bin with crossed lines indicating no waste or restriction, and a solid black rectangle below (no text or labels)

Indication hors plage "OL"

Dimensions 251 x 63.8 x 40 (H x La x P)

Résolution 0.1% RH, 0.1°C/0.1°F gamme inf., 1°C/1°F gamme sup.

Symbol of a trash bin with crossed lines indicating no waste or restriction, and a solid black rectangle below (no text or labels)

20, 200, 2000, 20000Lux (20000Lux

lectura x 10)

0.1% RH, 0.1°C/0.1°F rango inf.,

1^ / 1^ rango sup.

Velleman® Service and Quality Warranty

Velleman® has over 35 years of experience in the electronics world and distributes its products in more than 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;

- frequently replaced consumable goods, parts or accessories such as batteries, 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).