Sound level meter
Contents
1. cc cscsesseesessessesseessesseesseeseesseeseesseesesseeseesseeeeas 30 AFT d leie lun eee E eee eee ee 30 PU Ne WP IT BE 30 XI 1 2 Frequency response type pitch of 0 on the housing of the sound level meter ccssssseeen 30 AF2 WINOSO OC E 30 XI 3 Measured and displayed ValUeG cscsscscseesscsecseeseessecsesseessesseeseeeeessesseesseseseesesessseeneness 31 ALA A C Z weightings and free field rESPONSE csseeesesecseeseeseeseeseeseesaeseeseeseeeenaees 31 AFI NICE e ee UE 32 ZEN T EUR 32 XI 6 Plugs and mele Ee 0 E 33 LA re 33 XI 6 2 Transfer plug load main Voltage adaptor s s sssssnsusnsnsnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnna 33 Al 7 Memory and storage AUTONOMY senecessscstecseecectervesestesensecdecececseecsesecveaeegasseioctesavieuepessecedseeneuenics 34 ALS Power and storage QAUCONOMY cscsccscscsssscsecseseessecseeseessesseeseeessesseesseessneesseensseessneeneaees 34 XII Packaging and ACCESSOCIEG c ccscsseseseseesseeseeeseeseeesesseeesseesseeeas 39 ATC Keele KT EE 39 lee TEEN 39 XIII LDBGOO SOftEWar eC ececccceeececcccccccssssssssecceeeeecececccccccccesseececesseeeecesees 35 DB200 sound level meter CN Introduction The BB200 sound level meter is an acoustic measurement instrument with main features of a conventional and integrating averaging sound level meter With its memory DB200 sound level meter stores meas2. dp DB200 sound level meter E XI 3 Measured and displayed values e A C or Z weighted frequency acoustic pressure level and temporally weighted according time weightings Slow Fast or Impulse E g LAF e A C or Z weighted frequency maximum acoustic pressure level and temporally weighted according time weightings Slow Fast or Impulse on a measurement time E g LAFMax e A C or Z weighted frequency minimum acoustic pressure level and temporally weighted according time weightings Slow Fast or Impulse on a measurement time Ex LAFmin e C or Z weighted frequency peak pressure level Ex LCpK e Equivalent continuous level of acoustic pressure A C or Z weighted frequency on a T time measurement Ex LAeg T ou LAT e Equivalent continuous level of acoustic pressure A C or Z frequency weighted on a DI elementary measurement time Ex LAeq DI e Equivalent continuous maximum level of acoustic pressure A C or Z frequency weighted on DI elementary measurement time met on the total measurement Ex LAeq M e Equivalent continuous minimum level of acoustic pressure A C or Z frequency weighted on DI elementary measurement time met on the total measurement Ex LAeq m e Level of sound exposure A C or Z frequency weighted on a T time measurement related to reference time of 1s Ex LAE Statistical indices Definition When the sound level fluctuates the distribution of the measured levels can be characterized by sta
3. connect again the charger Red warning light must be turned on to finish loading If orange warning light appears contact customer support IX 9 AL adapter For measurements over long periods if possible use the AC adapter supplied with the instrument Battery pack or optional battery must stay inside the instrument in order to preserve measurement in case sudden failure of the sector DB200 sound level meter GC X Running informations X 1 Over range Under conditions of measuring range excess defined at 133 5 dB Z peak an over range icon appears Its displaying differs with the measuring mode selected e Land L St modes LXY it comes fleetingly for each passing It stays visible at least 1s for a better readability LXpk warning light appears during the first overload of the input stage it stays visible during all the measurement LXY max and LXY min the presence of the warning light indicates that displayed minimum and maximum values have been overloaded Deletion of overload warning lights takes place during a controlled reset by keyboard e L Leq mode LXY it comes fleetingly for each passing It stays visible at least 1s for a better readability LXpk et Leq warning light appears during the first overload of the input stage it stays visible until the end of the measurement 24H maximum e Leq St Mode Leq 0 5s warning light appears for each overload of input stage it stays visible du
4. pressure on ongoing measurement time e LUpk level of maximum peak of sound pressure on the measurement time e Measurement time expressed in DD HH MM SS DB200 sound level meter E2 This screen contains results of values that will be stored in memory at the end of measurement e LUpk level of maximum peak of sound pressure on the measurement time e LXeqM maximum value of equivalent continuous sound pressure level of all elementary integration times e LXeqm minimum value of equivalent continuous sound pressure level of all elementary integration times e LXeq equivalent continuous level of sound pressure on the overall measurement time e LXE level of exposure to sound frequency weighted e D measurement time in DD HH MM SS e percentage of saturation of the input stage e Statistics indices L01 L10 L50 L90 L95 They are calculated from stored samples E3 this screen reminds the general format of the session of measurement e Date of measurement start e Date of measurement end not entered because measurement is still ongoing e Measurement time not entered because measurement is still ongoing e Measurement mode Leg St e Frequency weighting for Leq Weg e Elementary integration time for Leq DI e Frequency weighting of the level of pressure peak for L Lok V 4 4 Stop the measurement We stopped the measurement manually through the Lac e The manual command Star
5. KIMO INSTRUMENTS Pressure Temperature Humidity Air velocity Airflow Sound level Sound level meter DB 200 Table of contents OP UGCA gen SEENEN 5 l e ee EI iy EE 6 Ill Sound level meter presentation s nssssnsensnsnnnrnnrnnnnrnnnnnnnnrnnnnnnnnne 7 HSC OV CR VIC WY eege 7 lll 2 Presentation of the screen keyboard GQroup csccscsssssscserseesseesesseessesseeseseesssessseeeas 8 AY S e EN Saa E E eeee rere 9g IV T Gola vile telen BE 9 M KA EE 9 IV Gont tast Ee Te LEE 10 WA dei e UE 10 WS APS LUTTE GE 10 A O ADOU EE 11 V Make SOME measurements ss sssusssusnunrnunnnnnnnnnnnnnunnnnnnnnnnnnnnnnnnnnnnnn nne 11 V 1 Conventional sound level meter function sssssussensnusnnrnnnrnurnurnnrnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn ennen 11 V 1 1 Adjustment prior to measurement ssssssssssssnsnsnsnsnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnannnnnnnnnnnnnnnnnnannnnnnnnnnnnan 11 V F2 LAUNCH CME measurement asinn a Aa 11 Vo DUME TNE IIE AS ure MENE E 11 V 2 Conventional sound level meter with storage function ssssssssssssssursssnrnssnnnnnnsnnnnnnnnn 12 V 2 1 Adjustment prior to measurement ssssssssssssnsnsnsnsnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnannnunnnnnnnnnnnnnnannnannnnnnnn nnana 12 V 2 2 Eaunch ne EH 12 V 2 3 DUIMO TE measurement E 12 V 2 4 Stop Bn TE 13 V2 eke F gt BRP Pe a a ee er oe eon ae cree ees 13 V 3 Conventional a
6. L Stock e Weg weighting frequency type here A e Cst time weighting here F e Lpk weighting frequency type of the peak sound level here C e Samp sampling rate here 01s V 2 4 Stop the measurement We stopped the measurement manually through the B pictogram e The manual command Start Stop has priority over the I O command even if the initial choice is a start from the I O command e The pause function is inoperative V 2 5 Store data At the end of the measurement in manual mode a screen of all results is displayed It is then possible to e Accept measurements and store them move the cursor on Sto and press once on OK key to confirm A banner displays the storage phase Ongoing Results Storage measurement e Reject measurements and not store them move the cursor on RST and press twice on OK key to confirm A banner displays the phase of suppression of data Ongoing Results RST active measurement Deletion E q DB200 sound level meter V 3 Classical sound level meter and averager integrator function The sound level meter processes the signal sound pressure and simultaneously provides the following information e LAY the sound pressure level weighted temporally e LXYmax and LXYmin maximum and minimum values of the levels on measurement time e Lupk level of maximum peak of sound pressure on the measurement time e LXeq equivalent continuo
7. RAZ activation RAZ 4 rary Procedure Pause LpK Ka fe Jes i S50 70 90 110 130 a OD DB200 sound level meter V 2 Conventional sound level meter with storage function The sound level meter processes the sound pressure signal and stores with a sampling rate results in a saved memory Data measured and stored at a sampling rate e Temporally weighted sound pressure level e Maximum and minimum levels on the measurement time e Level of maximum peak sound pressure on the measurement time Sampling rate Stored data is made at a rate to choose from 1s 2s 3s 5s 10s 15s 30s 60s V 2 1 Adjustment prior to measurement Procedure 1 Select L St mode move the cursor with arrow keys to 1 and select L St with the scrolling knob key 2 Select the weighting frequency and the time weighting For each weighting frequency the sound level meter proposes the measurement according to three time weightings Fast F Slow S Impulse I Possible choices are A frequency weighting LAF LAS LA C frequency weighting LCF LCS LCI Z frequency weighting LZF LZS LZI Place the cursor with arrow key on the area 2 and select with scrolling knob identified measurement criteria among the possibilities listed above 3 Select the weighting frequency of peak level of sound pressure move the cursor with the arrows to 3 and select C or Z with the scrolling kn
8. a modern ergonomy It mainly participates to the quick familiarization of the sound level meter A press a touch or a very light finger slipped on keyboard icon is enough to trigger the corresponding action of the sensitive key The measurement configuration is made by moving a reversed video cursor in reserved areas then by choosing the concerned parameter or function For instance e Time weighting choice Slow fast or Impulse e Frequency weighting choice A C or Z e Measurement mode choice L L St L Leq or Leq St Reserved areas appear according to two 3D type formats e Inner shadow to the frame simulates a shifted back area in which parameters can be modified or RA displayed measurement results l RAZ e External shadow to the frame simulates a shifted forward area in which different propositions of the menu can be chosen to go to an other configuration or validation screen A push on each arrow moves the cursor on the horizontal left right axis A push on each arrow moves the cursor on the vertical up down axis scrolling knob key increases or decreases suggestions in the area according the principle of front or back circular permutation The finger must slide from an arrow to the other one simulating a scroll wheel action From the bottom to the top to increase or from the bottom to the top to back to the previous proposal Go to the main menu to return to the previous screen lt A v OK Valid
9. alculates and displays the equivalent continuous level of acoustic pressure on a logging time of 0 5s V 4 1 Adjustment prior to measurement Procedure 1 Select Leq St mode move the cursor with arrow keys to 1 and select Leq St with the scrolling knob key 2 Select the weighting frequency Possible choices are A frequency weighting C frequency weighting Z frequency weighting Place the cursor with arrow key on the area 2 and select with scrolling knob A C or Z 3 Select the weighting frequency of peak level of sound pressure move the cursor with the arrows to 3 and select C or Z with the scrolling knob key 4 Select the DI logging time Place the cursor on 4 and select with the scrolling knob among 1s 2s 3s 5s 10s 15s 30s 60s V 4 2 Launch the measurement In manual mode directly press Eo icon the timer starts and shows the measurement time In I O mode see chapter Launching a measurement in I O mode V 4 3 During measurement During measurement three screens inform the current measurement They are accessible through the scrolling knob key E1 it is the main screen that displays the instantaneous measurements e LXeq0 5 equivalent continuous level of acoustic pressure over a systematic integration time of 0 5s e LXeqDI equivalent continuous level of acoustic pressure over the scheduled elementary integration time e LXeq equivalent continuous level of acoustic
10. at pump without the background noise of day to estimate the possible nuisance of the heat pump in a noise environment less noisy as the one present the night DB200 sound level meter V 6 1 Adjustment prior to measurement Procedure 1 Choose the 1 S2 mode place the cursor with the arrow keys to 1 and select S1 2 with the scrolling knob key 2 Select the frequency weighting Possible choices are A frequency weighting C frequency weighting Z frequency weighting LIN Place the cursor with arrow keys on the area 2 and select with scrolling knob A C or Z V 6 2 Make the measurement e Move the cursor to 3 and select 1 2 with the scrolling knob key to measure the two sound sources In the example outdoor heat pump 1 in a background noise of day 82 e Launch the measurement with the EI pictogram e Stop the measurement when it seems representative stabilized evolution of the LXeq value with the J pictogram e Stop the S1 sound source in the example heat pump e Launch the measurement of the 2 sound source background noise with the Eo pictogram Measurement of the 2 sound source will stop by itself after time T chosen for the measurement of the S1 S2 sound source and the S1 and S2 sound source level is displayed on the sound level meter In case improper handling and or of calculation impossibility result will not be displayed HOE Example 1 S2 level is lower than 1
11. ate a suggestion or an action to lead present in an outer shaded frame Exit a menu screen to return to the previous screen Launch a measurement then pause it if necessary Finally stop measurement Enable disable the backlight On Off DB200 sound level meter IV Settings From the SD a screen lists the different settings or informations about the instrument To have access to one of those screens scroll with the scrolling knob key and validate with OK key To quit each screen and back to main menu use fay key ni 00155 Memoire 100 Preamp IV 1 Configuration This screen allows configuration for some functions To have access to those functions Press key then choose CONFIGURATION with the scrolling knob key and OK key to validate Configuration From this screen use arrow keys to move the cursor in the desired area and modify with the scrolling knob key the proposition Various parameters to adjust are e Run systematic measurement mode when starting the device L L St L Leq Leq St or 1 82 e Lang user language French or English e Bip the presence or absence of tone when pressing on the keyboard The beep disappears by itself if it interferes with the measurement e Date Hour Set date and time To return to main screen press D I V2 1 0 The O input output allows to connect 2 5 mm jacks It is located at the bottom of the unit behind the rubber brea
12. d 35 130 dB Peak channel measuring range 83 133 dB Resolution 0 1 dB Sound referred to input Compatible with the linear range Frequency weighting X A C Z Frequency weighting Y Fast F Slow S Impulse I Overload indicator min 133 1 dB Controlled elementary integration time of LXeq for storing 1s 2s 3s 5s 10s 15s 30s 60s Sampling rate of LXY for storing 1s 2s 3s 5s 10s 15s 30s 60s Free integration time Start Stop max order 24H00 Statistical indices LXN Calculation based on LXY or LXeq DI stored data rounded up to the next dB on a dynamic of 100 dB Clock Accuracy Better than 0 01 Reference environment 23 C 50 RH 1013 hPa Operating environment From 10 C to 50 C 650 hPa to 1080 hPa 25 to 90 FH Storage temperature From 0 C to 50 C Dimensions L x x e 2 0 x 70 x 40 mm Weight with batteries 280 gr Fixing Fixation on the back of the instrument for tripod DB200 sound level meter E XI 6 Plugs and connections Located under the breastplate in soft rubber the different plugs and connections stand for e Communication with external components O interface e Battery load optional and or power e Access micro SD card Access to micro SD card et E ___ Warning light of the state of l DESS lt i battery charge UO 1 Input allows measuremen
13. eeseeseenseeeseesaeeseeeeeseesseesaeeseeseesaesseesseeseesesseeenaes 27 V 7 1 Launch a measurement in UO MOde cccccsccccssseccecccsssencccccseseneececesseneeseceeseneesecassenessesaessessesecsseensesecessanscaees 21 DB200 sound level meter Table of contents VI Read the stored IT 22 WET PROCES RT 22 Via Read al data TN seat scence aaarnas aaas anaana anaa aranana saaana 22 UE WE SE TIN IN OCG oc egsecrg access ayteczceny ever E E E 22 UI E EE TINS INO EE 23 VI 2 3 EA E TR ssiizisciseicoicasscncvonescessinwscesnscacnnsnesubanenseanansdsneisuunssuncseesouvancncewaslinnvaniennnuteuseevassonnenseincuseenbauenizanadaen 24 IER eres e eee E ee a E 24 VII Transferring files to PC csssssssssessessessesseesesessesseesensensenseens 29 VIII Reset Memory s ssssssssssssusunnusnnnunnnnunnunnnnunnnnunnunnnnunnnnnnnnnnnnnnnnnnnnnnnnnnnn nann 29 IX Directions for use and the sound level meter maintenance 26 k n AUN e BE 26 Ae G GC ol Ramee eer en eee ee eee er ee eee eee eee ee ee eee 26 K gellech EE 26 L gdEllde TE Te 23 bi Grag Regular TE el e E 23 IX 6 Replace Date Geteste ect 23 IX 7 Replace batteries with a battery Pack ccsssssscssessessesseeeseessesseessesseessssessseeeasenensees 28 IX 8 Load Re Ed a annann anneanne nnne 23 PD PAGO E 23 X Information Curing OPeratiON ccscsessscsceseesseseseseeseeeesesesee 29 L xelivlsflbedidelfldele TEE 29 PR EE 29 XI Technical F atures
14. elect measurement mode among L St or Leq St e Specify the sampling rate or logging time according to the method of measurement used The measurement time is calculated automatically based on the remaining memory capacity It is immediately compared to the remaining capacity of the power system batteries battery or AC adapter A warning appears in case of incompatibility between measurement time and power capacity Autonomy i Autonomy Instrument IV 5 Instrument es This screen reminds main components of the sound level meter e microphone and its serial number e sound level meter housing e version number of the firmware DB200 sound level meter IV 6 About This screen shows the various European standards and the accuracy class of the instrument It also specifies the date of the last checking and recalled next V Make some measurements V 1 Conventional sound level meter function About NF EN 61672 NF EN 61604 NF EN 61651 Class 2 00 2001 The sound level meter processes the signal and displays sound pressure and at the same time following informations e Temporally weighted sound pressure level e Maximum and minimum values of levels on the measurement time e Level of maximum peak sound level on the measurement time V 1 1 Adjustment prior to measurement 1 Select L mode move the cursor with arrow keys to 1 and select L with the scrolling knob key 2 Select the weigh
15. ement screen From that moment sound level meter waits for the electrical signal on the I O plug to start measurement At the end of the measurement storage of the measurement session in the sound level meter memory will be done systematically e The manual command Start Stop has priority over the UO command It will be always possible to manually launch or stop measurement I O activation I O features Ongoing measurement e DB200 sound level meter VI Read the stored files After a controlled stopping of the measurement and a data storing it s possible to see on the screen measurement dataset results VI 1 Access to files e Press Menu key then select Read then OK The first stored file is displayed e Scroll stored files with the scrolling knob key Each file is identified by a serial number type C01 and a filename format S01_1811LPF This file name will appear when uploading to a computer For easy identification the shown screen includes all measurement configuration e Mode L St L Leg Leg St S1 S2 e According to the mode different frequency and time weightings logging time sampling rate date and time Start End Time Mode Weig Cst Lpk Samp CONTR RETRO Zi 3 p CALIBRATION 02 s02_0305 LPF 2 stored file VI 2 Read all data file VI 2 1 L St mode file When the file has been identified by its identification number gt Press OK
16. gram Cal appears to validate through OK key At this moment the correction value of the gain and calibration date are memorized and visible for the next calibration e Quit calibration function par with key 24 09 2009 Ge ee Eet E ssi St Sc K This correction can not exceed 2 dB If the correction exceeds 2 dB the coincidence values in Ref HOTE and LCF is not obtained Reasons of this difference shall be identified defective microphone level value of the calibrator not adapted gt Modification of the reference value The reference preset value during manufacturing process shows that we use calibrator with rated value of 94 dB at 1000 Hz lf the proposed reference is not the one of the available calibrator follow the instruction below A e Move the cursor on Ref With arrow keys Adjust to the desired value dB per dB with scrolling efo v This new value is memorized until the next change CC DB200 sound level meter IX 4 Maintenance The sound level meter conception allows a reduced maintenance which consists in changing batteries and cleaning the instrument with a slightly cloth A particular attention must be paid to the microphone sensor which is the element the most sensitive of the metrological chain IX 5 Regular checking Like most measuring instruments it is strongly recommended to regularly control and calibrate DB200 instrument Return to the manufacturer each year will provide neces
17. grammable logging time for the calculation of the equivalent continuous sound level stored into the memory also called elementary integration time X generic marking for frequency weightings A C or Z standardized L Leq LE values U generic marking for frequency weightings C or Z standardized Lpk values Y generic marking for time weightings with F for Fast S for Slow or I for Impulse Man manual mode of measurement launching UO Launching mode of the measurement controlled by I O plugs SXX order number of the measurement sessions Limited to 25 RST reset of calculations of maximum or minimum values memorized erasing of measurement session or of the whole memory Sto storage of measurement session into the memory S1 name for measuring or calculating the equivalent continuous sound level of a first sound source S2 name for measuring or calculating the equivalent continuous sound level of a second sound source S1 S2 name for measuring or calculating the equivalent continuous sound level of the two sound sources 00 00 00 00 format of the measurement time in Days hours minutes seconds 00 00 00 format of the measurement time in Days hours minutes 00 00 00 format of the measurement time in Days hours minutes seconds or format of the current time 18 11 format of date 00 00 format of current time in hours minutes Pond A C or Z frequency weightings Cte time weighting or ti
18. key to access to E1 main screen results e LUpk level of maximum peak of sound pressure e LXYmax maximum value of sound pressure level weighted temporally met since the beginning of the measurement e LXYmin minimum value of sound pressure level weighted temporally met since the beginning of the measurement e D Measurement time expressed in DD HH MM SS e percentage of saturation of the input stage e Statistics indices L01 L10 L50 L90 L95 gt With scrolling knob key go to E2 screen which reminds measurement configuration e Date of measurement start e Date of measurement end e Measurement time expressed in DD HH MM SS e Measurement mode L St e Frequency weighting Weig e Time weighting Cst e Frequency weighting of the level of peak pressure LpK e Sampling rate Samp DB200 sound level meter gt Press Esc key to quit this file and back to file selection main screen LCpk LAFmax LAFmin A T e e Mode Loi Lio y L50 Lan Stored file E1 screen E2 screen Stored file VI 2 2 L Leq mode file When the file has been identified by its identification number gt Press OK key to access to E1 main screen results e LUpk level of maximum peak of sound pressure e LXYmax maximum value of sound pressure level weighted temporally met since the beginning of the measurement e LXYmin minimum value of sound pressure level weighted temporally met since the beginning of the meas
19. l meter and the calibrator e Turn on the calibrator e Wait for a moment a correct level of acoustic pressure of the calibrator for example 94 0 dB e You can begin the procedure of calibration of the instrument as explained below DB200 sound level meter eh gt Reminder Free field coefficient An acoustic reference source a calibrator or a pistonphone supplies a level of acoustic pressure During a free field measurement phenomenons of diffraction caused by the microphone and the housing come to affect the measurement This perturbation est minimized if the microphone is far from the housing For this sound level meter the induced free field perturbation is very low and it is not necessary to introduce a free field correction gt Operating mode e Press key then select CALIBRATION with scrolling knob key and press OK to validate CALIBRATION I CONFIGURATION Wo 2 CONTR RETRO CONTR RETRO CALIBRATION gt I CALIBRATION ag gt READ A new screen is displayed Calibration e Check that the reference value Ref corresponds to that of the used calibrator canes and the value free field correction C CI 0 0 dB for the sound level meter e Place the running calibrator on the microphone e Move the cursor with arrow keys on LCF The instrument automatically adjusts the gain of the channel to obtain the coincidence of the levels displayed in Ref and LCF When measurement is stabilized a picto
20. me constant Fast Slow Impulse S S integration time controlled in Manuel mode Start Stop C CI free field correction term in calibration mode Corr corrective term of nominal benefit in calibration mode L01 L10 L50 L90 L95 Normalised statistics distribution used in environmental studies DB200 sound level meter lll Presentation of the sound level meter lll d Overview Windscreen essential to reduce the noise induced by air currents Electret microphone Severable from the preamplifier inside the windscreen Preamplifier Graphical backlighted LCD screen 240 x 160 pixels It displays both reserved areas for the setting of the measurement and areas for results presentation Monochrome with 16 grey blue levels it participates to the intuitive manipulation of the sound level meter Keyboard it consists of only 8 sensitive keys Its ergonomy allows an immediate and easy use of the sound level meter lt a Bottom part protected by a flexible and removable V rubber breastplate it contains all input output and external power plugs The back of the instrument contains a battery compartment door a threaded hole for mounting on a tripod a location for the nameplate and a location for the calibration label O DB200 sound level meter Ill 2 Presentation of the screen keyboard group The screen keyboard group gives to the instrument
21. measurement time in DD HH MM SS e percentage of saturation of the input stage e Statistical indices L01 L10 L50 L90 L95 They are calculated from stored samples gt With scrolling knob key go to E2 screen which reminds measurement configuration e Date of measurement start e Date of measurement end e Measurement time expressed in DD HH MM SS e Measurement mode Leq St e Frequency weighting for Leq Weg e Elementary integration time for Leq DI e Frequency weighting of the level of peak pressure for L LoK gt Press Esc key to quit this file and back to file selection main screen E age ian A tg T S01 s01_0803 Stored file E1 screen E2 screen Stored file VI 2 4 S1 S2 mode file When the file has been identified by its identification number you access to the main single screen of results It shows e 1 S2 equivalent continuous level of both sources e 2 equivalent continuous level of 2 sound source e DI equivalent continuous level of 1 sound source e Frequency weighting of the equivalent continuous level e Measurement time for the calculation of equivalent continuous level gt Press Esc key to quit this file and back to file selection main screen DB200 sound level meter VII Transfer files to PC This function allows to transfer data towards a computer through a USB cable LDB200 software has been previously installed on the computer e C
22. ment time 1 session according logging time sampling rate for LXeq LXY storage Integration time or sampling Maximum measurement Maximum rate time in hours measurement time en days 1s 24 1 2s 48 2 3s 72 3 De 120 5 10s 240 10 15s 360 15 30s 720 30 60s 1440 60 A In the event of a reset of the memory by the sound level meter or through the software LDB200 all the memory is erased XI 8 Power and storage autonomy Measurement autonomies linked to power are given for a running at 20 C and backlight off Beware of declining capacity of the battery or batteries for measurement at low temperature e Batteries pack 3 alkaline batteries 1 5V LR6 AA type Autonomy 20 C 15H in continuous e Battery rechargeable Li lon type 3 7 V 4400 mAh Caution Li lon battery is a delicate element Take care when manipulating or storing Autonomy 20 C gt 24H in continuous e Mains supply charger type universal USB format ref AS 123 PRI 100V 240V 60 50Hz 150 mA SEC 5V 1000mA 5VA Autonomy unlimited depending on memory capacity of the measurement see table above When a connection to a PC for data transfer the USB computer delivers a voltage of 5V DC 500mA under This power supply has priority over the battery pack or battery that is recharged through this power supply Tir Rian DB200 sound level meter XII Packaging and access
23. mesure 06 04 2010 10 04 11 Dur e de la mesure 7J 17 26 30 Pond ration Leq A Pond ration cr te C Dur e d int gration 10 s Mode LegStockage LAeg max 84 8 dB LAeg min 37 7 dB LAeg T 58 4 dB LEAT 116 7 dB LCpk 120 6 dB Surcharge 0 00 Dur e de la mesure 7J 17 26 30 tapport de campagne SS Ss ses zz ses BE V a um i i j l d 21 16 51 06 49 51 16 22 51 01 55 51 11 28 51 21 01 51 06 34 51 16 07 51 01 40 51 11 13 51 20 46 51 06 19 51 15 52 51 01 25 51 10 58 51 20 31 51 i 31 03 2010 01 04 2010 02 04 2010 03 04 2010 04 04 2010 05 04 2010 10 04 11 06 04 2010 Document non diffusable sans autorisation crite 391 0u JOU noy im s onpoud JNO Jo sonsuapeseyo y AjlpOW o ypu y PAJOSOJ M WUSUUDOOD IEPIOSIUOO UON S60 Z8Z BYE xnanbu d PZ SOM OL OL ZO Deg BueLN EXPORT DEPARTMENT CO lt a ma I a E iq Ka ab OI I D Bn D gt O Q 49 aa ab CH Oo iq gt es OQO a 71312 MARNE LA VALLEE CEDEX 2 Tel 33 1 60 06 69 25 Fax 33 1 60 06 69 29
24. nd integrating averaging sound level meter function ees 14 V 3 1 Adjustment prior OMG ASUN CIC EE 14 V 3 2 erh ETC 14 V Dunno Ne meas uleme EE 14 VSA Stop the measurement EEN 15 Wi Se SOC data ais eecitoau endian nus ee dah ab guesucuiutey ido latata sate ctaceseneilevivnananioanuanetaiaaneineiatlniioncs 15 V 4 Integrating averaging sound level meter with storage fUNCTION ccssseeeseeeees 16 V 4 1 Adjustment prior to MEASUreMeNh ccssssessecscseesecssssesesseesecseeaesesseesesseeseceesaesessessesaesaesessassesesaesaseansesaaeas 16 WG 2 Launch the measurement escycze cxeticscist cee ace suis cane ese cel dloussca E ace vucehlbed en ea de eealalitar stacey 16 V E DUNG NE MCASULCINC EE 16 V 4 4 E Stop the MEASUNEIMEN Essa ccsacsziisciericiscus heca sect vavesinsnnestateayeasstassauiorcetaaieescunstasanctestsinaaaa a amanion etiam nenan tae 17 VAS Store E 17 V 5 Beleeg 18 V 5 1 Adjustment prior te BET EE 18 V 5 2 Make calculation of two sound SOUICES cssssscssesessesssseseceseesessesesaesecaseesassecassesassesasseeessesateentenseaseaeenes 18 LE EE E EE 19 V 6 Determine a sound source AMONG CWO csscecscseeseessecsesseesseeseeseeseesseseeeeseeeesneesseeesneensanes 19 V 6 1 Adjustment prior to MeaSUreMeN1 ccscsscssssesssecsecsesesessecsessesaesessersessecaecsesansessessesaesansessenseseeaneassansnsaneas 20 V G2 Make ET 20 We LONG EE 20 V 7 Sound level Meter in 1 7O mode ee secscess
25. ns listed below will be used throughout this user manual L represents the measurement mode conventional sound level meter L St represents the measurement mode conventional sound level meter with storage function The sound pressure level is stored into the memory at a sampling rate which is defined and planned L Leq represents the measurement mode conventional and integrating averaging Values are measured simultaneously L St represents the measurement mode integrating averaging sound level meter with storage function The equivalent continuous sound level on the logging time DI is stored into the memory S1 S2 denomination for measuring or calculating the levels of 2 sound sources LXeq X weighted equivalent continuous sound level on the logging time or on the total time of the measurement LXeqM Maximum X weighted equivalent continuous sound level on the logging time on the total time of the measurement LXeqm Minimum X weighted equivalent continuous sound level on the logging time on the total time of the measurement LXE X weighted sound exposure level LXY X weighted acoustic pressure level time weighting Y LXYmax Maximum X weighted sound pressure level time weighting Y LXYmin Minimum X weighted sound pressure level time weighting Y LUpK U weighted peak sound level Echant time between two successive storages of the sound pressure level into the memory also called Sampling rate DI Pro
26. ntain accuracy and required reliability avoid any chock of the housing and the microphone and keep them away from humidity and corrosive steams IX 2 Directions for use For each application you should check measurement technique and conditions in order to get valid and coherent results The way of using the instrument has at least as much importance on result than device quality You have to take into account at least the following parameters e The sound level meter is designed for a free field acoustic measurement e The instrument is held with reached out arm for short time measurement or positioned on a tripod for long time measurement e The axis of the instrument must face sound source do not interfere with your own body or with any close material item furnitures machines low wall trees etc e Protect the instrument from bad weather and use as much as possible the windscreen It protects the microphone and minimizes during measurement the disruptive effects linked to air currents e Calibrate the instrument regularly with a suitable calibrator CAL200 type IX 3 Calibration A calibration must be performed regularly with a suitable calibrator e Insert the adapter ring according to the diameter of the microphone sound level meter e Place the calibrator on the microphone until the microphone reaches the end of the ring Do this move slowly and smoothly so as not to damage the microphone e Put vertically the sound leve
27. ob key 4 Select sampling rate move the cursor to 4 and select with scrolling knob key among 1s 2s 3s 5S 10s 15s 30s 60s V 2 2 Launch the measurement In manual mode directly press icon DI In I O mode see chapter Launching a measurement in I O mode V 2 3 During measurement During measurement three screens inform the current measurement They are accessible through the scrolling knob key E1 it is the main screen that displays the instantaneous measurements E2 This screen contains results of values that will be stored in memory at the end of measurement e LUpk maximum peak level of sound pressure e LXYmax maximum value of sound pressure level weighted temporally met since the beginning of the measurement 00 00 02 30 e LXYmin minimum value of sound pressure level weighted temporally met since the beginning of the SS measurement 45 0 dB e D measurement time in DD HH MM SS on e percentage of saturation of the input stage SA e i e Statistics indices L01 L10 L50 L90 L95 They are calculated from stored samples DB200 sound level meter E3 this screen reminds the general format of the session of measurement e Start date of measurement start e End date of measurement end here not entered because measurement is still ongoing e Time measurement time here not entered because measurement is still ongoing e Mode measurement mode type here
28. ommand Start Stop has priority over the I O command even if the initial choice is a start Mie from the I O commana e The pause function is inoperative V 3 5 Store data At the end of the measurement in manual mode a screen of all results is displayed It is then possible to e Accept measurements and store them move the cursor on Sto and press once on OK key to confirm A banner displays the Storage phase Ongoing measurement e Reject measurements and not store them move the cursor on RST and press twice on OK key to confirm A banner displays the phase of suppression of data Results Storage Ongoing measurement Deletion D DB200 sound level meter V 4 Sound level meter and averager integrator with storage function The sound level meter processes the acoustic signal for each elementary integration time and stores results in a saved memory Measured and stored data for each integration time e LXeq DI equivalent continuous sound level of acoustic pressure on the logging time and frequency weighted e LUpk level of maximum peak of sound pressure on the elementary integration time e Measurement time expressed in DD HH MM SS Integration time Data storage is made according to logging time DI to choose from 1s 2s 3s 5s 10s 15s 30s 60s In order to have permanent control of the sound pressure level before the launch of measurement the sound Nive level meter c
29. onnect the instrument to the PC through the USB cable e Go to PC screen of the sound level meter from the menu icon select PC then OK e Press OK key again to activate USB icon The connection to the PC is shown on the screen of the sound level meter DC screen Sound level meter PC File format files have a specific termination for each measurement mode connection e L St mode S01_2409LPF e L Leq mode S05_2409LPQ e Leq St mode S03_2109LEQ e 1 S2 mode S04_2409LS1 With 01 order number 2409 day month LPF extension VII Reset memory After datasets storing thanks to the transfer to computer it s possible to erase sound level meter memory There are two methods e Through sound level meter see below e Through computer see LDB200 software user manual Through sound level meter e Go to PC screen of the sound level meter from the menu icon select PC then OK e Move the cursor to RST with left arrow key e Press OK key RST blinks e Press OK key to delete all data progress bar is displayed Leg m Menu Progression of deletion D DB200 sound level meter A All the sessions in the sound level meter will be permanently deleted gt Press Esc key to quit this file and back to file selection main screen IX Directions for use and sound level meter maintenance IX 1 Use warnings The sound level meter is a measuring instrument using the latest technologies To mai
30. ories XII 1 Supplied with The sound level meter is supplied in a transport case with a batteries pack 3 x LR6 AA a windscreen a USB cable for transferring data a CD ROM with LDB200 software and user manuals A calibration certificate is also supplied XII 2 Optional e Acoustic calibrator class 2 type CAL200 e Rechargeable Li lon battery and charger mains adapter USB type BL 123 e Mains adapter AS 123 e Telescopic tripod PPCX e Jacks cables I O interface on request XIII LDB200 software Supplied with the sound level meter LDB200 software allows the configuration data recovery and exploitation stored in the memory of the instrument Easy to use it requires a smaller learning and allows immediate management of data Main functions e Visualization and results of the different measurement mode e Zoom function for more detailed study of a period e Statistical distribution of data e Formatting and editing of measurement report e Data recovery and creation of text files LDB200 S02_2903 appareil12006 LEQ Fichier Imprimer Exporter Appareil Outils Fen tre Aide 5X D gt e Fra gE q qT Ve Een ai E ke Ze ed Ouvrir Enregistrer Imprimer Exporter Appareil Calculette 51 52 Soci t Note g n rale Tableau des valeurs Evolution temporelle Distribution statistiques Configuration Vueglobale Mode Leq Stockage D part de mesure 29 03 2010 16 37 51 Fin de
31. ound pressure frequency weighted on measurement time e LUpk level of maximum peak of sound pressure on the measurement time e Duration of the measurement expressed in DD HH MM SS E2 This screen contains results of values that will be stored in memory at the end of measurement e LUpk level of maximum peak of sound pressure on the measurement time e LXYmax maximum value of sound pressure level weighted temporally met since the beginning of the measurement e LXYmin minimum value of sound pressure level weighted temporally met since the beginning of the measurement e LXeq equivalent continuous level of acoustic pressure frequency weighted on measurement time e LXE level of exposure to sound frequency weighted e D Measurement time expressed in DD HH MM SS e percentage of saturation of the input stage DB200 sound level meter E3 this screen reminds the general format of the session of measurement e Date of measurement start e Date of measurement end not entered because measurement is still ongoing e Measurement time not entered because measurement is still ongoing e Measurement mode L Leq e Frequency weighting for and Leq Weg e Time weighting for L Cst e Integration time for Leq S S Start Stop mode e Frequency weighting of the level of pressure peak for L Lok V 3 4 Stop the measurement We stopped the measurement manually through the B pictogram e e The manual c
32. ource Move the cursor to 3 and select 1 with the scrolling knob key then launch the measurement Dich pictogram Stop the measurement when it seems representative stabilized evolution of the LXeq value e Measure 2 sound source Move the cursor to 3 and select S2 with the scrolling knob key then launch the measurement with pictogram The measure will stop by itself after time T previously chosen for the measurement of the S1 source The equivalent continuous level calculated from the two combined sources is displayed in front of S1 2 DB200 sound level meter V 5 3 Store data At the end of the measurement a screen of all results is displayed It is then possible to e Accept measurements and store them move the cursor on Sto and press once on OK key to confirm A banner displays the Storage phase ei S1 S2 calculation calculation results Storage e Reject measurements and not store them move the cursor on RST and press twice on OK key to confirm A banner displays the phase of data deletion EW S1 S2 RST active results V 6 Determine a sound source among two Dette A The determination of a sound source among a set of two can not run unless the operator can interrupt one of the two sources the aim being to estimate the sound level of a source without the presence of the other source Example outdoor heat pump in a background noise of day Estimate the sound level of a he
33. ring the integration time of 0 5s then switches off and so on Leg DI and LXpk both warning lights appear for each input stage they stay visible during the integration time from 1s to 60s then switch off and so on Leq T warning light appears during the first overload of the input stage it stays visible until the end of the measurement e 1 S2 mode warning light appears at the first overload of input stage for each measurement it stays visible until the end of the measurement e of presence of overloads of the input stage This information can be required during a mid and long term measurement when overload indicator is displayed Its presence does not provide information about the frequency of occurrence of the overload but the percentage calculation provides a level of alert about measured and displayed levels by the instrument A LXY minimum value may have been overloaded for example a level of 110 dBA with a high peak factor while a LXY maximum value of 125dBA with a low peak factor can not be overloaded Note eise X 2 Power When the instrument is equipped with alkaline batteries or with a battery a symbol informs the user about the remaining power In case of low power less than one bar on the pictogram the pictogram starts blinking the instrument stops the measurement saves the results and switches off During a mains connection for long term measurements the pictogram automatically changes
34. sary metrological traceability IX 6 Change batteries e Turn off the sound level meter e Return the instrument e Open the back hatch e Keep off the 3 batteries and insert the 3 new batteries of type 1 5 V AAA LR3 inside Respect meaning of batteries e Close the back hatch IX 7 Replace the batteries with a battery pack According to the frequency of use of the instrument it is sometimes better to replace batteries power by a rechargeable Li ion battery The battery life increases to nearly 30 hours of continuous operation e Turn off the sound level meter e Remove the battery pack located inside the housing and disconnect the associated connector e Connect the battery respecting its insertion direction mechanical keying of security e Slide the battery into the housing e Close the back hatch IX 8 Load the battery Use a USB power adaptor which serves as a charger It s also possible to connect the sound level meter to USB port of a running computer Battery will load according available current at the USB output about 500 mA A time of about 8 to 10 hours is needed to obtain a full charge Meaning of warning light located next to USB port e Red warning light ongoing load e Green warning light completed load e Blinking red green warning light battery is disconnected check the connection or contact customer support e Orange warning light after a load period load or battery trouble disconnect then
35. so S2 can not be calculated Lines will appears on the screen instead of numbers V 6 3 Store data At the end of the measurement it s possible to store data e Accept measurements and store them move the cursor on Sto and press once on OK key to confirm A banner displays the Storage phase measurement measurement and S1 calculation Storage DB200 sound level meter e Reject measurements and not store them move the cursor on RST and press twice on OK key to confirm A banner displays the phase of data deletion Results a gt S1 52 S2 measurement and measurement S1 calculation Deletion V 7 Sound level meter in I O mode The sound level meter can be part of a monitoring chain which is controlled by an industrial controller So sequences of measurement are directly launched by orders from the controller In addition it delivers on programming a continuous signal of sound level detection This signal can then be interfaced with any system of visual or audible warning V 7 1 Launch a measurement in I O mode In L St L Leq or Leq St mode select I O icon at the bottom right of the screen at the time of adjustments prior to measurement e Press OK key to go to the screen which reminds launching and stopping measurement conditions measurement begins when a high continuous level appears and measurement stops when returning to the low level e Press OK key to back to main measur
36. stplate UO 1 corresponds to input for the launch and stop measurement from an industrial controller and is for measurement modes L St L Leq and Leq St Launching of the measurement is made for a continuous high level and stopping the measurement is made for a continuous low level O 1 also corresponds to the detection output compared to a preset sound level and is for all modes of measurement A high level appears in output when the value of the acoustic pressure level reaches and exceeds a certain value For this type of output following items must be configured e The level type choose L Leq or LPK depending on the mode of measurement e Programming with scrolling knob key the desired level of detection by 1 dB steps e Set a timer for maintaining the continuous signal detection after sub overshoot sound level from 1s to 10s by 1s pitch DB200 sound level meter UO features _ IV 3 Contrast backlight To optimize reading of the display Les e Position the cursor on Cont and adjust the contrast by choosing with scrolling knob rari Ox key a level of 1 to 7 e Position the cursor on Retro and adjust backlight by choosing with scrolling knob key a level of 1 to 3 Contrast Backlight IV 4 Autonomy Autonomy provides information on the remaining memory capacity and allows time measurement according to the chosen method of measurement and acquisition speed measurement logging time or sampling rate e S
37. t Stop has priority over the I O command even if the initial choice is a start Nie from the I O command e The pause function is inoperative V 4 5 Store data At the end of the measurement in manual mode a screen of all results is displayed It is then possible to e Accept measurements and store them move the cursor on Sto and press once on OK key to confirm A banner displays the Storage phase s Mele EE Ongoing Results Storage 8 measurement DB200 sound level meter e Reject measurements and not store them move the cursor on RST and press twice on OK key to confirm A banner displays the phase of data deletion Ongoing Results measurement Ce mite b Deletion V 5 Calculate two sound sources The sound level meter processes the acoustic signal of several sound sources over a time left to the free initiative of the operator The measured value here is the equivalent continuous level over this time V 5 1 Adjustment prior to measurement Procedure 1 Select S1 S2 mode move the cursor with arrow keys in 1 and select 1 2 with the scrolling knob key 2 Select the frequency weighting Possible choices are A frequency weighting C frequency weighting Z frequency weighting LIN Place the cursor with arrow keys on the area 2 and select with scrolling knob A C or Z V 5 2 Make calculation of two sound sources e Measure 1 sound s
38. t launching U Le 6 a Mini USB connector for data transfer I O 1 Output levels detection H load battery mains voltage adaptor Not used I O 2 Input not used UO 2 Output 0 10V XI 6 1 I O Interface I O 1 In input start stop control for measurement TTL level maximal 5V input impedance gt 15 kQ jack 2 5 mm diameter a measurement ee lt a GND Ground Measurement Measurement start stop ae UO 1 Out output to activate alarm maintains high state after detecting a LX or planned LXeq level Variable time selected from 1s to 10s by 1s steps TTL level 3 3 V input impedance lt 100 Q jack 2 5 mm diameter UO 2 Out DC output 0 10 Volts input impedance lt 100 Q jack 2 5 mm diameter dynamic range 0 130dB step 0 0769 mV dB accuracy 0 3dB i CND Ground eh Not connected XI 6 2 Transfer plug load mains voltage adaptor This plug is for data transfer battery load optional or power It s a mini USB format e Data transfer USB mode e Mains supply charger type universal USB format ref AS 123 e Data Format proprietary PRI 100V 240V 60 50Hz 150 mA SEC 5V 1000mA 5VA D DB200 sound level meter XI 7 Memory and storage autonomy e Memory micro SD card type it takes place in the slot on the back of the unit It allows 25 sessions of 86500 values each e Capacity microSD Card 1GB or 2GB Table below shows the measure
39. ting frequency and the time weighting For each weighting frequency the sound level meter proposes the measurement according to three time weightings Fast F Slow S Impulse I Possible choices are A frequency weighting LAF LAS LA C frequency weighting LCF LCS LCI Z frequency weighting LZF LZS L Place the cursor with arrow key on the area 2 and select with scrolling knob identified measurement criteria among the possibilities listed above 3 Select the weighting frequency of peak level of sound pressure move the cursor with the arrows to 3 and select C or Z with the scrolling knob key V 1 2 Launch the measurement The measurement is immediate yet it is interrupted and reset with each change V 1 3 During measurement During the measurement two actions are possible e Reset memorized levels e Fix the measurement thanks to Pause function To reset all the values Press OK icon RAZ function is activated and concerns s LAF maximum and minimum levels e Value of the maximum peak pressure e Informations about overload Pause function allows to stop the current measurement to avoid an unwanted event or to make a manual record of results Press Micon to stop the measurement then press it again to resume measuring When the sound level meter is paused no action is specified in the Nie Peak at the top of the screen See p 29 for further detail on overload function
40. tistical indices These are statistically calculated from the time evolution of the sound level measured in site These levels correspond to X weighted acoustic pressure level which is exceeded for N of the time interval It is noted LN Therefore the statistical indice L1 corresponds to sound level exceeded for 1 of the observation time L50 for 50 of the time Calculated indices are L01 L10 L50 L90 L95 XI 4 A C Z weightings and free field response The frequency response of the whole microphone windscreen A C or Z weightings Sound level meter is in compliance with standards in a given template according the accuracy class of the instrument NF EN 61672 1 class 2 Plots types of free field sound level meter are given below Free field response Free field response Free field response with A weighting with C weighting with Z weighting D XI 5 Metrology XI 5 1 Main features DB200 sound level meter DB200 sound level meter Classical mode Integrator averager mode Electromagnetical compatibility CE mark As per 89 336 CEE directive and product standards Standards NF EN 61672 1 2003 NF EN NF EN 61672 1 2003 NF EN 60804 60651 1994 2000 Accuracy class 2 Reference Pressure level 94dB Frequency 1000 Hz Caliber 30 130 dB Direction 0 microphone axis Measuring range A Weighted 30 130 dB C Weighted 35 130 dB Z Weighte
41. to represent a plug Da BD Al LD i In case of sudden failure of the sector the measurement is not saved To avoid this trouble let the batteries or the rechargeable battery inside the instrument D DB200 sound level meter XI Technical features XI 1 Microphone The instrument is equipped with an electret microphone with an integrated preamplifier of standardized diameter of 1 2 inch Fixed at the top of the sound level meter it gives to the group microphone and housing free field features compatible with standards XI 1 1 Sheet e Marque KIMO e Type Prepolarized free field 1 2 e Grig diameter 13 2 mm e Preamplifier integrated e Power 15 V DC e Nominale sensitivity for preamplifier output 50mV Pa e Equivalent capacity about 10pF XI 1 2 Frequency response type reference direction of the sound level meter Free field frequency response type template class 2 NF EN 61672 1 XI 2 Windscreen B DB23 windscreen creates modifications of free field response that comes in addition to initial features of the microphone on the housing The whole stays compliant to requirements class 2 reference standard So when using the windscreen there is no need to take into account a correction term free field B DB23 free field response template class 2 NF EN 61672 1 dB l o N Hz dB Free field response microphone type B DB23 template class 2 EN NF 61672 1
42. urement e LXeq equivalent continuous level of acoustic pressure frequency weighted on measurement time e LXE level of exposure to sound frequency weighted e D measurement time expressed in DD HH MM SS e percentage of saturation of the input stage gt With scrolling knob key go to E2 screen which reminds measurement configuration e Date of measurement start e Date of measurement end e Measurement time expressed in DD HH MM SS e Measurement mode L Leq e Frequency weighting for L and Leq Weg e Time weighting for L Cst e Integration time for leq S S Start Stop mode e Frequency weighting of the level of peak pressure for L LoK gt Press Esc key to quit this file and back to file selection main screen 23703 08 55 50 Start End Time Stored file E1 screen E2 screen Stored file DB200 sound level meter VI 2 3 Leq St mode file When the file has been identified by its identification number gt Press OK key to access to E1 main screen results e LUpk level of maximum peak of sound pressure on the measurement time e LXeqM maximum value of equivalent continuous sound pressure level of all elementary integration times e LXeqm minimum value of equivalent continuous sound pressure level of all elementary integration times e LXeq equivalent continuous level of sound pressure on the overall measurement time e LXE level of exposure to sound frequency weighted e D
43. urement datasets Then they are transferred to a computer and processed through LDB200 software According to international standards sound level meter calculates and displays on its graphical backlight LCD screen values used for a fast and complete study of the noise environment To simplify and make nice its use 5 measurement modes have been preselected e Mode 1 Conventional sound level meter See p 11 e Mode 2 Conventional sound level meter with storage See p 12 e Mode 3 Conventional and integrating averaging sound level meter See p 14 e Mode 4 Integrating averaging sound level meter with storage See p 16 e Mode 5 Sound level meter calculator of two sound sources See p18 In the different modes in addition to measured values the sound level meter can display e results for a better definition of the acoustic environment Maximum and minimum values peak values statistics distribution of measured levels e Indications required for the proper validation of the measurement Presence and percentage of overload input stages duration of the measurement e other information Battery autonomy remaining measuring capacity The sound level meter also communicates with an automaton through I O plugs e 0 10 V DC analog output e Control bit activated as per pre programmed threshold e Launching and stop of measurement by the automaton O DB200 sound level meter ll Vocabulary The terms and abbreviatio
44. us level of acoustic pressure frequency weighted on measurement time V 3 1 Adjustment prior to measurement 1 Select L Leq mode move the cursor with arrow keys to 1 and select L Leq with the scrolling knob key Procedure 2 Select the weighting frequency and the time weighting For each weighting frequency the sound level meter proposes the measurement according to three time weightings Fast F Slow S Impulse I Possible choices are A frequency weighting LAF LAS LA C frequency weighting LCF LCS LCI Z frequency weighting LZF LZS L Place the cursor with arrow key on the area 2 and select with scrolling knob identified measurement criteria among the possibilities listed above 3 Select the weighting frequency of peak level of sound pressure move the cursor with the arrows to 3 and select C or Z with the scrolling knob key V 3 2 Launch the measurement In manual mode directly press BI icon e timer starts and shows the measurement time This time is limited to 24 hours In I O mode see chapter Launching a measurement in I O mode V 3 3 During measurement During measurement three screens inform the current measurement They are accessible through the scrolling knob key Screen 1 LpK E1 it is the main screen that displays the instantaneous measurements e LAY the sound pressure level weighted temporally e LXeq equivalent continuous level of s
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