Velleman DEM202 User manual

DEM202

PROFESSIONAL SOUND LEVEL METER WITH DATALOGGER

PROFESSIONELE GELUIDSNIVEAUMETER MET DATALOGGER

SONOMÈTRE PROFESSIONNEL AVEC ENREGISTREUR DE

DONNÉES

PROFESSIONELLES SCHALLPEGELMESSGERÄT MIT

DATENLOGGER

SONÓMETRO PROFESIONAL CON REGISTRADOR DE DATOS

PROFESJONALNY MIERNIK POZIOMU DŹWIĘKU Z

REJESTRACJĄ DANYCH

MEDIDOR PROFISSIONAL DO NÍVEL DE SOM COM COLETOR

DE DADOS

USER MANUAL 3

GEBRUIKERSHANDLEIDING 11

MODE D'EMPLOI 19

MANUAL DEL USUARIO 27

BEDIENUNGSANLEITUNG 35

INSTRUKCJA OBSŁUGI 44

MANUAL DO UTILIZADOR 53

DEM202

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DEM202

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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.

2. Safety Instructions

Keep this device away from children and unauthorized

users.

Keep this device away from rain, moisture, splashing and

dripping liquids.

Protect this device from shocks and abuse. Avoid brute

force when operating the device.

Protect the device against extreme heat and dust.

There are no user-serviceable parts inside the device.

Refer to an authorized dealer for service and/or spare

parts.

3. General Guidelines

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

of this manual.

Familiarise yourself with the functions of the device before actually

using it.

All modifications of the device are forbidden.

Only use the device for its intended purpose. Using the device in an

unauthorised way will void the warranty.

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4. Features

normal and peak mode

max and min measurements

over-range display

manual and automatic start mode

A and C weighting

fast and slow response

analogue AC/DC outputs for connection to frequency analyzer or X-Y

shaft recorder

PC real-time monitoring and recording

datalogger function

memory up to 262144 readings

5. Overview

Refer to the illustrations on page 2 of this manual.

windscreen

response time button

microphone

setting button

LCD display

sound level calibration

A/C weighing button

earphone socket

backlight button

USB socket

data hold button

external power supply

range button

dustproof cover

on-off button

tripod socket

MIN/MAX button

battery compartment

Display

MAX

maximum recorded value

MIN

minimum recorded value

OVER

input value is higher than upper limit

UNDER

input value is lower than lower limit

FAST

fast response mode

SLOW

slow response mode

dBA

A weighing frequency

dBC

C weighing frequency

88 ~ 188

range display

TIME

current time

DATE

current date

AUTO

auto range selection

HOLD

data hold

REC

data recording

FULL

full memory

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auto power-off

battery level

real-time communication

6. Battery

1. To replace the battery, make sure the device is switched off.

2. Open the battery compartment at the back using an appropriate

screwdriver.

3. Take out the old battery and replace with a new and identical 9 V

battery following the polarity markings inside the compartment.

4. Close the battery compartment.

Warning: Do not puncture batteries or throw them in fire as they

may explode. Do not attempt to recharge non-rechargeable

batteries (alkaline). Dispose of batteries in accordance with local

regulations. Keep batteries away from children.

7. Operation

7.1 Basic Operation

1. Press the on-off button for 1 second to switch on the meter.

2. Briefly press the backlight button to switch the backlight on or off.

3. Press the A/C weighing button to select the A or C weighing frequency.

4. Press the fast/slow button to select the fast (1 sample/125 ms) or slow

(1 sample/1 s) weighing mode.

5. Press the range level button to select the range level.

6. Aim the microphone to the sound source at a distance of 1 to 1.5 m.

The sound level appears on the display.

7. Briefly press the data hold button to freeze the reading on the display.

Press again to unfreeze.

8. Press the MIN/MAX button to display the recorded maximum value,

briefly press to display the recorded minimum value, press again to

exit the function.

9. Press the on-off button for 3 seconds to switch off the meter.

7.2 Setting Date and Time

1. To enter the date and time setting mode, hold the setting button

pressed while switching on the meter.

2. Set the time and date with the up/down button, go to the next item

with the setting button.

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3. Press the data hold button to confirm and to exit the mode.

4. In normal mode, press the setting button to toggle between time and

date display.

7.3 Recording

1. In normal mode, hold the setting button pressed for 3 seconds to enter

the recording mode.

2. The meter starts recording automatically and stops when the memory

is full.

3. Clear the memory before recording again, as recording cannot be

resumed as long as memory is full. Go to the 8.5 Datalogger section

below for more information.

4. Hold the setting button pressed for 3 seconds to exit the recording mode.

Remarks:

It is advisable to use the external power supply to avoid the meter from

switching off due to a drained battery.

7.4 Calibration

1. Select the A-weighing frequency, fast sampling rate and a level range

from 50 to 100 dB.

2. Carefully insert the microphone into the calibrator (not included).

3. Calibrate the microphone to 94 dB through the CALL potentiometer. To

do so, use the included calibration tool.

Remarks:

It is advised to calibrate the meter once a year.

8. Software

8.1 Installation

1. Insert the included CD into the CD-ROM drive of your computer. The

software will auto-run. If not, double-click the setup.exe file.

2. Follow the installation steps and install the software.

8.2 Introduction

1. Click on the software icon to run the software.

2. Connect the meter to the PC using the included USB cable.

3. After having started up the software, the menu and toolbar appear.

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open a saved data file

save a data file

settings

time setting

start real-time data recording

stop real-time data recording

connection with user’s PC

disconnection from user’s PC

upload the recorded data onto the user’s PC

4. Click the connection icon to connect the meter to your PC.

5. To use the software correctly, it is advised to synchronize both the

date and time on the meter and on the PC. To do so, click the time

setting icon.

8.3 Real-Time Recording

Start

measurement starting time

End

measurement ending time

File

data list with recorded files

MAX

maximum recorded value

MIN

minimum recorded value

Unit

measurement unit

Data NO.

data number

SampleRate(s)

sample rate

Average

average recorded value

High Alarm

upper limit alarm

Low Alarm

lower limit alarm

Start Name

file name

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8.4 A/B Graph

Detailed view of the recorded values is done with

markers. These markers limit the value range, which in

turn can be enlarged and viewed in detail. To determine

the markers:

1. Go to the markers window and select the A marker

by clicking it. The selected marker will be

highlighted in yellow.

2. Place the mouse cursor at the starting point in the

graph window and left-click to set the marker. Click

the diamond button to move your marker.

3. Do the same for marker B and set the ending time.

4. Detailed values are displayed in the bottom left-

hand corner of the screen.

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8.5 Datalogger

Setup

Set the sample rate, date and time. Other options can be set the same as

the default settings.

Download

Upload the recorded data from the meter to your PC.

Clearing the Memory

Clear the recorded data in the meter. All data will be permanently erased, so

you might want to upload the data to your PC first.

Remarks:

To save battery, click the disconnection icon to disconnect the meter

after use and switch off the meter.

9. Cleaning and Maintenance

Wipe the device regularly with a moist, lint-free cloth. Do not use

alcohol or solvents. DO NOT submerge the device in any liquid.

Store the meter in a dry place away from humidity and vibrations.

Remove the battery when the meter is to be stored for long periods of

time.

DEM202

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10. Technical Specifications

accuracy

± 1.4 dB

frequency range

31.5 Hz to 8 kHz

dynamic range

50 dB

measuring range

30 dB to 130 dB

data memory (measuring points)

262144

sampling rate

2x / sec.

frequency weighting

A, C

time weighting

fast

125 ms

slow

1 s

microphone

1/2" electret condenser microphone

data output

USB

power supply

1x 9 V battery 6F22 (incl.)

optional power supply

PSSMV1 9 V, 1.3 A

connector: 1.35 x 3.5 mm

operation temperature/humidity

-20° C ~ 60° C (-4° F ~ 140° F)

10 % ~ 90 % RH

operating altitude

< 2000 m

storage temperature/humidity

-20° C ~ 60° C (-4° F ~ 140° F)

10 % ~ 75 % RH

dimensions

252 x 66 x 33 mm

weight (with battery)

258 g

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.

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.

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