SOUND LEVEL METER - DATA LOGGER
GELUIDSDRUKMETER - DATALOGGER
SONOMÈTRE - ENREGISTREUR DE DONNÉES
SCHALLPEGELMESSGERÄT - DATENLOGGER
SONÓMETRO - DATA LOGGER
USER MANUAL 4
GEBRUIKERSHANDLEIDING 9
MODE D'EMPLOI 14
MANUAL DEL USUAR I O 19
BEDIENUNGSANLEITUNG 24
DVM8852
Figure 2
Figure 3
Figure 1
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DVM8852
Figure 4
Figure 5
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DVM8852
User manual
1. Introduction
To all residents of the European Union
Important env i ronmental 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. Th is
device should be returned to your distributor or to a local recycling service. Respect the
local en v ironmental ru le s.
If in doubt, conta ct y our local wa ste disposal aut hori t i es.
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. 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.
2. Safety Instructions
Keep the device away from children and unauthorised
users.
Keep the sound level meter away from rain, moisture,
splashing and dripping liquids.
Protected the meter against extreme heat and dust.
Do not use in area’s where altitude > 2,000m.
•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 ensuin g defects or problems.
•Note that damage caused by user modifications to the device is not covered by the warranty.
3. General Guidelines
• Protect this de vi ce from shocks and abuse. Avoid brute force when operati ng the device.
• Familiarise your s elf wit h t he f unct i ons of t he device before actually using it.
• All modifications of the device are forbidden for safety reasons.
• Only use the device for its intended purpose. Using the device in an unauthorised way will void the
warranty.
•There are no user-serviceable parts inside. Refer to an authorized dealer for spare parts.
4. Features
• cannot b e used for officia l sound measurem en ts
• with Windows® softw are and Mac® / Linu x® USB drivers
• 32,700 records data logger
• bar graph indication
• max/min fun ction
• over and un der range displa y
• auto ranging: 30 - 130 dB
• clock display
• resolution: 0.1 dB
• level range display
• AC/DC signal output
• auto powe r of f
• fast & slow response
• AC/DC signal output for connection to analyser or X-Y recorder
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DVM8852
A
windscreen
J
hold button
C
record start/stop button
L
externa l 9VD C jack
D
setup bu tton
M
USB mini-B connector
E
mode select button
N
AC/DC output jack
F
signal weighing select button
O
pick-up element
G
max/min capture butto n
P
tripod mounting hole
H
range/level select button
Q
battery cover
I
power on/ off button
1
UNDER
the current measurement is below the selected range
2
OVER
the current measurement is above the selected range
3
MAX
the maximum noise level is being measured
4
MIN
the minimum noise level is being measured
5
FAST
fast measurement mode, measurement every 125ms
6
SLOW
slow measurement mode, measurement every 1s
7
88
range indicator, lower limit
8
188
range indicator, lower limit
9
bar graph
scale depends on selected range (low, medium, high, auto)
10
DATE
only displayed during setup
12
TIME
indicates time display
13
188.8
measured sound level
14
auto-power off mode enabled
15
16
REC
datalogger enabled, data is being stored
17
FULL
datalogger memory is full, connect meter to PC to save/clear memory
18
dBA
A-weighted mode
19
dBC
C-weighted mode
20
AUTO
automatic range selection
21
HOLD
hold mode, displayed value frozen
[7]
[8]
range
30
80
low
50
100
medium
80
130
high
30
130
auto range
5. Overview
General: refer to the Figure 1 and Figure 2 on page 2 of this manual.
B LCD display K backlight button
LCD-displa y : refer to Figure 3 on page 2 of this manual.
11 18:88:88 shows tim e during normal operation, shows set-up codes during set-up
low battery indication, replace battery
6. Operation
General
•Slide the windscreen [A] over the p ick-up element [O] to avoid erroneous measurements due to
strong winds.
• Switch the sound meter on by pressing the power on/off button [I].
• Select the sound pressure range with the range/level select button [H]. Ranges are indica ted on
the display [7], [8] and [20]. The bar graph [9] scale depends on th e selected range.
•When the UNDER [1] or OVER[2] indication appears, the measurement is outside the selected
range. Select an appropriate range.
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DVM8852
voltage: 1Vrms/ range step
impedance: 100Ω
impedance: 1kΩ
Z
Ground
Press #
Display
minutes TIME
n n
h-A or h-P
A=ante meridiem (before n oon), P=post meridiem (after noon)
3
DATE –d- day
set the day of the month by pressing the range/level select button [H]
DATE –Hmonth
5
DATE –Y- year
set the year by pressing the range/level select button [H]
6
rSt
press the hold button [J] to reset date and time to factory default
•The meter h a s two operational modes, fast or slow. In fast mode, soun d is sampled every
125ms; in slow mode every second. Select fast or slow mode with the mode selec t bu t to n [E].
Selected mode is indicated in the display, [5] or [6]. Note t ha t t he d isplay i ts elf is updated 2
times per second.
•There are two weighing schemes available on the meter: A-weighted (dBA) and C-weighted
(dBC):
dBA: sound pressure adjus ted to w a r d s th e fr equenc y r a nge of human hearing
dBC: sound pressure adjusted towards t he lo w f re quency end of the spectrum
Select the desired scheme with the signal weighing select button [F], the scheme is indicated on
the display [18] or [19].
•Pr e ss th e ho ld b u tton [J] to freeze the curre nt measurem ent on the di s play. Hold mode is
indicated on the display [21]. Press the hold button [J] again to exit hold mode.
•Press the max/min capture button [G] to continuously display the maximum measured value,
displa y indica tes MAX [3]. Press the max/min capture button [G] again to continuously display
the minimum measured value, display indicates MIN [4]. Pressing the max/min capture button
[G] again will show the current noise pressure level again.
• Press the backlight button [K] to switch the backlight on and off.
• The auto-power off mode indication [14] is shown when auto-power off is en a b led. The meter
switches off after ±15 min utes of user inactivity. To disable the auto-p ow e r off function, press
the setup button [D].
•To switch off the mete r, press and hold the power on/off button [I] for about 3 seconds (display
shows countdown).
•The meter can be used ha ndheld or m o u nted on the in cluded tripod. S cre w t he tr ipo d into t he
mounting hole [P] on the back of the meter.
Note: the AC/DC output jack can be used to connect other devices e.g. frequency analyzer (not
incl.), p lo tter (not incl.) …
X AC output
Y DC output
voltage: 10mV/dB
Time/date setting
• If the meter is on, switch it off first.
• Press and hold the setup button [D] while switching on the meter wit h the power on/off button
[I]. Release the setup button [D] when TIME [12] is displayed. The disp la y now sho w s t he
date.
•Pres si ng t he se t up b u tton [D] to enter the setup menu. Press the setup button [D] to save the
setting and go to the next setup entry. Press the hold button [J] at any time to save the se tting
and exit setup mode.
1
2
4
hour TIME
set the minutes by pressing the range/level select button [H]
set the hour by pressing the range/level select b utton [H]
set the month by pressing the range/level select button [H]
Note: the day is not shown on the display during normal operation. It can only be shown by going
into setu p mode
Data logger function
•During m ea sure ment, press the record start/stop button [C] to start recording the
measurement. Press again to stop recording. Record ings ca n be tran sferred to a compu ter (see
§7 Analysis).
• To clear the memory, switch off the meter first. Press and hold the record start/stop button [C]
while switching the meter back on. Release the record start/stop button [C] when the wo r d CLR
appears on the display. Warning: all recorded data in the meter is lost. Consider uploading the
memory content to a computer prior to clearing the memory.
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DVM8852
7. Analysis
•The meter can store 32,700 readings. To analyse the readings, the included software must be
installed.
Software setup
•Insert the included CD-ROM in to a personal computer. Open the CD directory and double click on
the file named setup.exe to start the installation. Follow the instructions on the screen of your
computer.
•Connec t the USB po r t [M] of the meter with a free USB port of the computer using the included
US B cable.
• Switch on the meter with the p ower on/off button [I].
• Press on the setup button [D] to start data transmission. The auto-power off icon [14] is no
longer displayed.
•When the computer doesn’t recognize the USB device, copy the CP2101WIN directory from the
CD to a local directory and let the computer look for the drivers on the local directory.
Data analysis
•Loc a te the 8852.exe icon () and double clic k it to start the software. Select the right C OM
port in the ComPort(C) menu. The COM port depends on the setup of the computer and the
us ed USB port. When the right port is selected, connection is established immediately. Refer to
the
Figure 4 on page 3 of this ma nual for a screen shot.
•Use the Real Time(R) menu to run or stop real time sound monitorin g , set up or clear the
graph. Details are shown above the graph.
•Real-time mode must be stopped to set the sampling rate. Note that this is not the sampling rate
of the meter, but the rate with which the software reads the meter.
•Zoom in on the graph b y s el ecting an area with left click, d rag and release . To go b a ck to full
screen graph, cl ick on the UnDo Zoom button.
•When in zoom mode, click on the Graph(G) menu and select Histogram. Click anywhere in the
graph to change the appearance to a histogram. Go to the Graph(G) menu, select Line and
click anywhere in the graph to change the appearance back to line.
•Also in zoom mode , d ouble click left mouse button on a point of the graph will set a green mark
line. Double click left mouse button again to set a second mark line (blue). Data between the two
mark lines is analyzed (e.g. max. value, min. value, average…) and shown below the graph. To
remove the mark lines, click on the right mouse button or double click left mouse button on a
new point in the graph.
•To save the real-time data, stop real-time monitoring and start it again. At this point, the
software will ask to save the previous graph data. Data is saved as a text file.
•To analyze previously recorded meter data, select the DataLogger(D) menu. Note that this will
not work when the meter is in record mode. A new screen opens; refer to Figure 5 on page 3 of
this manual for a screen shot.
•The data is copied from the meter to the software memory and deleted from the meters’
memory. T o sa v e the data on the com p uter, use the Save Data(S) menu. If not, when
closing the application the data will be lost.
•Double click left mouse button on a file to see the data. The graph also has the zoom and mark
lines functions.
• It is po ssible to recall previously saved records with the Import Data (I) menu.
• To print the graph, use the Print Data (P) menu.
8. Battery replacement
• To replace the battery, switch off the meter first.
• Open the battery cover [Q]. Push gently on the mark () and slide the cover ±1cm downwards
and lift.
• Remove the old battery and insert a new 9V battery. Respect the polarity.
• Place the cover on the back of the device and slide upwards. Make sure all keys are in place and
the battery cover is closed completely.
WARNING: A ma l function may o ccur if the power i s on when the ba tt ery is
replaced. Dispose of bat teries in acc ord a nce with local regulations. Keep the
battery away from children.
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9. Technical spec ific at ions
Lo
30 – 80 dB
Med
50 – 100 dB
Hi
80 – 130 dB
accuracy
± 1.4dB (ref 94dB @ 1kHz)
freque ncy weighting
A, C
time weighting
fast ( 125 ms), slow (1 s)
dynamic range
50 dB
freque ncy range
31.5 Hz t o 8 kHz
microphone
1/2" electre t co n dense r microphone
auxiliary outputs
AC = 1Vrms and DC = 10mV/dB outputs
power supply
9V battery (incl.)
batte ry li fe
±30 hours (with alk aline b a t te r y)
dimensions
278 x 76 x 50 mm
weight
±350 g
auto powe r of f
±15 min
operation tempe rat ure
0 – 40 °C
opera tion hum idity
< 90 %
instructio n ma nual, tripod, battery, screwdriver,
windscreen, Windows software, USB cable
level range
DVM8852
included accessories
Use this device with original accessories only. Velleman nv cannot b e held responsib l e in
the event of damage or injury resulted from (incorrect) use of t his device.
For more info concerning this product, p lease visi t our w ebsite www . v el leman.eu.
The information in this manual i s subject to chang e without prior notice.
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DVM8852
Gebruikershandleiding
1. Inleiding
Aan alle ingezet enen van de Europ ese Unie
Belangrijke milieu-informatie betreffende dit prod u ct
Dit symbool op het toestel of de verpakking geeft a an dat, als het na zijn lev en scyc l us
wordt weggeworpen, dit toestel schade kan toebrengen aan het milieu. Gooi dit toestel (en
eventuele batterijen) niet bij het gewone huishoudelijke afval; het moet bij een
gespecialiseerd bedrijf terechtkomen voor recyclage. U moet dit toestel naa r uw verdeler of
naar een lokaal recyclagepunt brengen. Respecteer de plaatselijke milieuwetgeving.
Hebt u vragen, contacteer dan de pla at selijke autori t eiten inzak e v erwijdering.
Dank u voor uw aankoop! Lees deze handleiding grondig voor u het toestel in gebruik neemt. Werd
het toestel beschadigd tijdens het transport, installeer het dan niet en raadpleeg uw dealer.
2. Veiligheidsinstructies
Houd dit toestel uit de buurt van kinderen en
onbevoegden.
Bescherm deze ge luidsme ter tegen regen, vochtigheid en
opspattende vloeistoffen.
Bescherm deze geluidsdrukmeter tegen stof en extreme
temperaturen. Deze geluidsdrukmeter is niet geschikt voor
gebruik > 2.000 m.
•De garantie geldt niet voor schade door het negeren van bepaalde richtlijnen in deze handleiding
en uw dealer zal de verantwoordelijkheid afwijzen voor defecten of problemen die hier
rechtstreeks verband mee houd en.
•Schade door wijzigingen die de gebruiker heeft aangebracht aan het toestel vallen niet onder de
garantie.
3. Algemene richtlijnen
• Bescherm dit toestel tegen schokken. Vermijd brute kracht tijdens de bediening van dit toestel.
• Leer eerst de functies van het toestel kennen voor u het gaat gebruiken.
• Om veiligheidsredenen mag de gebruiker geen wijzigingen aanbr eng en aan het toes te l.
• Gebruik het toestel enkel waarvoor het gem a akt is. Bij onoordeelkundig g ebruik vervalt d e
garantie.
4. Eigenschappen
• niet geschikt voor officiële geluidsmetingen
• Windows®-software en USB-drivers voor Macintosh®/Linux®
• data logger met geheugen voor 32.7 0 0 meti ngen
• bargraphaanduiding
• max-minfunctie
• weergave sterk e n zwak sig naa l
• automatische bereikinstelling: 30 - 130 dB
• klok
• resolutie: 0,1 dB
• weergave van het meetbereik
• signaaluitgang AC/DC
• automa tische ui ts c hakeling
• trage/snelle respons
• AC/DC-sign a a luitgang voor aa nsluitin g met an a lyser of X-Y-recorder
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