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GHM DeltaOHM HD2010UC, Operating Manual

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GHM DeltaOHM HD2010UC Operating Manual Download Page 128

 

HD2010UC 

-   128   - 

V4.2

 

Equivalent Sound Pressure Level .......................................................................................................................... 107

 

Statistical Analysis ................................................................................................................................................ 108

 

Noise Dose ............................................................................................................................................................ 110

 

Acoustic Field ....................................................................................................................................................... 110

 

Environmental influence ....................................................................................................................................... 111

 

Precautions and General rules of use .................................................................................................................... 112

 

Classification of acoustic signals .......................................................................................................................... 112

 

A5.

 

M

ICROPHONE 

O

UTDOOR 

P

ROTECTION 

HD

 

WME

 

-

 ASSEMBLY

,

 DISASSEMBLY AND MAINTENANCE

 ..................... 115

 

A6: DEFINITIONS .................................................................................................................................................... 122

 

 

Summary of Contents for DeltaOHM HD2010UC

Page 1: ...Operating manual Integrating Sound Level Meter HD2010UC www deltaohm com English Keep for future reference Companies Brands of GHM ...

Page 2: ...HD2010UC 2 V4 2 ...

Page 3: ...connector 2 5mm jack 17 DOWN key in the menu it selects the next line or decreases the selected parameter In graphic mode it increases the vertical scale levels the graph is shifted downwards 18 RIGHT key in the menu it is used when editing parameters with attribute In graphic mode it extends the vertical scale 19 MODE key if Advanced Data Logger is installed selects in circular order the instrume...

Page 4: ... RS232 port you have to use the dedicated serial null modem cable code HD2110 RS fitted with a 9 pole female connector As alternative the sound level meter can be connected to a PC USB port by using the dedicated cable HD2110 USB fitted with type A USB connector n 15 Male connector for external power supply 5 5mm 2 1mm socket It requires a 9 12Vdc 300mA power supply The positive pole power supply ...

Page 5: ...q SEL and maximum and minimum sound levels with integration times from 1 second to 99 hours If an undesired sound event produces an over load indication or simply alter the result of an integration its contribution can be excluded using the versatile Back Erase function The measured sound levels can be recorded in the large non volatile memory in order to be trans ferred to a PC using the supplied...

Page 6: ...recording of the A weighted sound level profile with FAST time constant sampled 8 times per second Storage of the profiles of 3 programmable parameters sampled twice per second Simultaneous ly the profiles of 3 programmable parameters are recorded at 2 samples second The HD2010 sound level meter changes into a sound level logger capable of storing 4 parameters for more than 23 hours Impulsive even...

Page 7: ...recording 5 acoustic parameters together with statistical descriptors of each event During recording up to 9 different markers are available in order to signal the occurrence of particular situations to be considered during the traces analysis phase A timer programs delayed start of capture Memory module option This option doubles the memory capacity from 4MB to 8MB Advanced Data Logger option re ...

Page 8: ...HD2010UC 8 V4 2 HD2010UC BLOCK DIAGRAMS The block diagram shows the main elements of the HD2010UC sound level meter ...

Page 9: ...surements within a wide weather condition range The special preamplifier is fitted with a calibration circuit that uses a charge partition technique in order to calibrate the unit inclusive of the microphone capsule The output driver allows guiding cables up to 10m in length without important losses The free field response of the UC52 microphone fitted with the HD WME maintains the Class 1 specifi...

Page 10: ...x on page 115 THE PREAMPLIFIER The HD2010PNE2 preamplifier amplifies the weak signal provided by the microphone The preamplifier has a gain selectable between 0 and 10 dB and is supplied with a charge partition cali bration device which allows to measure the frequency response of the whole amplification chain microphone included diagram described on page 49 The output driver allows transmitting th...

Page 11: ...0 dB is divided into 5 ranges using a variable gain amplifier with steps of 10 dB between 0 dB and 20 dB positioned at the input The signal of the preamplifier comes to the instrument receiver and its output is sent to the LINE connector and to the A D converter input The instrument can be set to use the LINE channel in place of the signal coming from the preamplifier The A D converts the analogue...

Page 12: ...ess MODE at any time to jump from a screen page to the next one The display will show first the SLM screen with 3 measuring parameters in numeric format and if the Advanced Data Logger option is enabled the Profile screen with the A weighted sound pressure level with FAST time constant LAFp the Probability distribution and the Percentile Levels screens Upon power on the sound level meter displays ...

Page 13: ...indicates that the overload is in progress The integration time Tint programmable between 1s and 99h is displayed to the right of the overload indicator When the integration mode is set on MULT the Tint symbol on the SLM will flash see the DESCRIPTION OF THE DIFFERENT INTEGRATION MODES chapter on page 25 In the right corner at the top there is the battery symbol The more the symbol is empty the mo...

Page 14: ... a second of the 3 pa rameters and 8 times a second of LAF Automatic Stop at the end of the set inte gration interval Automatic recording of SLM page at the end of the set integration interval MULTIPLE Recording twice a second of the 3 pa rameters and 8 times a second of LAF Automatic reset of integrated levels at every integration interval Automatic recording of the SLM screen at intervals equals...

Page 15: ...e selected parameter flashes you can change it with the UP and DOWN keys If a parameter with attribute is selected like for example LFp FAST weighted pressure lev el the relative frequency weighting will also flash A in the example in the figure In this case pressing UP and DOWN you can modify the selected parameter without changing the attribute for example if you press DOWN you can go from LFp A...

Page 16: ...RASE followed by the time interval in seconds to be deleted Use the LEFT and RIGHT keys to increase or decrease the erase interval Displayed integrated parameters change accordingly allowing choosing the erase time depending on the effective need When pressing PAUSE CONTINUE again measurement will start again and the integrated parameters will have been removed from the selected interval The erase...

Page 17: ...ith FAST time constant The integration interval is shown in the left corner at the bottom of the display Always at the bot tom in the centre the display shows the measurement unit and the frequency weighting of the measuring parameter The amplitude of the vertical scale of the displayed graph corresponds to 5 divisions The am plitude of each division is called scale factor of the graph and appears...

Page 18: ...or or both L cursors in tracking will be activated in succession the selected cursor will flash Use the LEFT and RIGHT arrows on the keypad to move the selected cursor on the graph The second line at the top of the display shows the level of the measuring parameter and the time indicated by the active cursor or the time interval and the L1 L2 level difference between the two cursors when they are ...

Page 19: ...tor was switched on for about 2 minutes near the microphone The distribution of probabilities shows the different population of the examined noise clear ly From lower levels the first peak about 63dBA reflects the room background noise caused by the ventilation system The second peak about 65dB concerns the cooling compressor activation The third peak about 69dB is the tone issued by the calibrato...

Page 20: ...rmed in multiple mode the statistical graphs are cleared at the beginning of every interval These screens are not recorded in the Auto Store mode and can be recorded only as a single datum therefore they are not available for continuous recording These display modes do not have a specific Monitor function The statistical analysis is sent to the serial interface together with other measurements whe...

Page 21: ...he RIGHT zoom and LEFT zoom keys Use the UP and DOWN arrows to set the graph full scale with steps equal to the selected scale fac tor In this way the graph can be shifted UP or DOWN according to the pressed key An analogue bar indicator on the display right side provides the non weighted instantaneous level of the input sound pressure level as for the SLM mode bar The parameter chosen for statist...

Page 22: ...pling interval in the left lower corner and the chosen measure ment parameter for the statistical analysis in the first line left of the status indicator and the possible overload indicator The amplitude of the vertical scale corresponds to 5 divisions The amplitude of each division is called scale factor of the graph and appears in the middle of the vertical axis This parameter is selectable in r...

Page 23: ...later the bottom threshold for time T2 Fig 8 Description of the event trigger parameters To prevent short duration pulses being detected as sound events a minimum trigger duration can be set up to a maximum of 10s Menu Trigger Minimum Duration If the threshold is exceeded for less than the set time the event is neglected Also a minimum deactivation duration can be set when the deactivation thresho...

Page 24: ...cording Event allows selection of the 5 parameters and memorization The event parameters integration begins 2 seconds before triggering This pre trigger time cannot be modified A special printing function synchronized with the trigger is available for communication of the event itself via RS232 Menu Trigger Print If the trigger is enabled the sound level profile is displayed with black background ...

Page 25: ...multiple integration divides the measurement in equal intervals according to the set in tegration time Tint Each single interval begins by resetting the levels and ends when the set inte gration time is elapsed the integration levels sequence ends when manually interrupted by the RUN STOP key The following figure shows the Leq Short profile calculated twice per second and the integrated Leq over i...

Page 26: ...e set integration time is elapsed The PAUSE CONTINUE key can be used to suspend the calculation of integrated levels tem porarily while instant levels are still being measured During a pause and as far as the integrated levels displayed on the SLM page are concerned you can delete the last integration seconds through the Back Erase Function data exclusion see page 15 The monitor function is not af...

Page 27: ...ether with the Auto Store function MENU Instrument Re cording Auto Store allows to record the SLM parameters at intervals equal to the set integration time see THE RECORD FUNCTION on page 30 Automatic recording occurs at the end of each integration interval When the Auto Store function is active the REC symbol will flash alternating with the indi cator of the sound level meter acquisition up on th...

Page 28: ...t Press to record the displayed data ON Press to start Automatic stop when t T Int with recording of the SLM MULTIPLE OFF Press to start The integration of the sound levels occurs according to intervals equal to T Int The integrated levels are cleared at the beginning of every interval Press to start Continuous recording with LAST marker at the end of each integration period Stop by pressing Press...

Page 29: ... serial interface press PRINT again or STOP to end the operation After activating the Monitor function even if you press the MODE key the type of screen sent to the serial interface will not change The PRINT function can also be selected starting from the STOP status In this case the func tion will automatically activate as soon as the instrument switches into the RUN mode If the instrument gets i...

Page 30: ...r required has been selected the sound level meter is set for Auto Store mode The parameter MENU Re cording Auto Store will be activated and the REC symbol blinks over the status indicator Press START to begin automatic recording as soon as the measurement time reaches the set integration time the parameters shown on the SLM screen are recorded automatically If the inte gration mode is single the ...

Page 31: ...stop recording temporarily press CONTINUE to restart it As soon as you go back to the RUN status a special record is stored containing indications about the possible erase see the Back Erase Function in SLM mode on page 15 besides date and time The HOLD key does not affect data recording When the continuous recording is active if the integration mode is set to single the integra tion time acts lik...

Page 32: ...ed per each detected event see paragraph EVENT TRIGGER FUNCTION on page 23 at the end of the event itself The 5 integrated parameters the spectra and the statistics are automatically cleared at the beginning and are integrated for the entire dura tion of the event The 5 event parameters can include FAST SLOW and IMPULSE weighted maximum and minimum levels Peak level Equivalent level SEL The event ...

Page 33: ... When the event trigger uses the Profile view sound level as source Menu Trigger Source LEV the event data are recorded only when the trigger threshold Menu Trigger Trigger Threshold exceeds the minimum duration time Menu Trigger Minimum Duration The following figure shows the recording flow for the Measurement Report and Event groups The Measurement group recording is enable only during the event...

Page 34: ...er as if starting a logged measurement confirm with the YES key The instrument switches into stand by and turns off see Fig 12 Fig 12 Delayed acquisition timer warning screen The instrument will turn back about one minute before the set delay to allow execution of the warm up time before starting the automatic acquisition During this waiting minute the TIMER message blinks showing the automatic ac...

Page 35: ...arameter Some of the parameters listed in the menu can also be modified directly from the measurement dis plays see the chapter concerning the different display modes from page 12 The menu is nest structured that is it is organised in menus and submenus To select a menu item use the UP and DOWN arrows until the selected item flashes When the parameter next to a menu item does not flash it means th...

Page 36: ...identifies the instrument and the microphone These are all items that cannot be changed by the user Instrument instrument name Serial N instrument serial number Version current firmware version loaded Microphone supplied Free Filed microphone model is UC52 Mic S N microphone serial number Mic Response type of microphone response FF stands for Free Field DF for Diffused Field Class IEC 61672 Class ...

Page 37: ...ort so that no action by the operator is required RS232 Bits non modifiable parameter number of bits of which transferred data are made up the value is 8 RS232 Stop Bits non modifiable parameter stop bit the value is 2 RS232 Parity non modifiable parameter parity bit the value is none OFF Serial Device identifies the device connected to the serial port The connection possibilities are PRINTER conn...

Page 38: ...e the former is single SING and the latter is multiple MULT For the description of the two modes see chapter DESCRIPTION OF THE DIFFERENT INTEGRATION MODES The multiple integra tion mode requires an Integration interval different from zero be set and disables Report Time and Event Trigger Lev 1 2 3 and 4 Percentile in the statistical analysis of sound events LN percentile lev els are defined as th...

Page 39: ...persists for a number of seconds at least equal to this parameter It is used only if the Source parameter is set to LEV Stop Delay when the trigger conditions are not present anymore the event ends after a num ber of second equal to this parameter has elapsed Printing printing of a warning string TAG can be enabled through the serial interface for each event RECORDING In the Recording menu Advance...

Page 40: ...space uselessly we recommend to enable only the needed items and set the others to OFF Par 1 Par 5 define five integrated event parameters with relevant frequency weightings Parameters enables recording of the 5 parameters Par 1 Par 5 defined previously Statistics activates the recording of the event statistics CALIBRATION Calibration Level Sound level of the reference sound source used for the so...

Page 41: ...4 2 SEQUENCER The Sequencer menu needs the Advanced Data Logger option Timer programmable acquisition delay in seconds minutes or hours up to a maximum of 99 hours see paragraph Delayed acquisition timer on page 34 ...

Page 42: ...ach program is here below described in details NAVIGATOR This program available with the Advanced Data Logger option allows to access the data stored on the instrument display and print them with no need to download them to a PC It works both with single session data and with multiple ones Press PROG Memory Navigator SELECT to access it The following screen will appear 2003 01 01 10 00 00 Batt 95 ...

Page 43: ...isplayed automatically pressing the LOAD key File type Auto Press START to see the data session the screens of the measurement session will be displayed in the acquisition order During the replay use the PAUSE CONTINUE key to stop and restart the re play or press STOP to finish At the end the instrument will position on STOP A single screen page can be sent at any moment to the serial interface Wh...

Page 44: ...ted with reports and measurements respectively The maximum recording resolution is used only during events by enabling the Measurement group parameters recording see CONTINUOUS RECORDING OF REPORT AND EVENTS GROUPS on page 32 while for the other acquisition elements only the Report group parameters are recorded using a lower time resolution When the simultaneous recording of measurements reports a...

Page 45: ...on Capacitive Transducer Calibration with the possibility to measure the fre quency response of the whole measurement chain microphone included using the built in sig nal generator Calibration is necessary every time that the calibrator level measured by the sound level meter de viates from the nominal value for more than 0 5dB The acoustic calibration includes the capacitive transducer one and be...

Page 46: ...d frequency weightings are thus automatically adjusted In the 2010UC sound level meter besides the windshield correction the adjustment for the acoustic field can be activated too With the standard microphone UC52 which has a frequency response optimized for the Free Field no correction is applied when the correction is set on Free Field When you set the correc tion on Random Incidence RI the corr...

Page 47: ...level meter internal circuits are discharged Press and hold down the ENTER key while inserting the missing battery The instrument will automatically turn on and will show a warning message indicating that fac tory parameters have been loaded Press CONTINUE to confirm and make an acoustic calibration to store calibration constants If this operation is not carried out or in case the acoustic calibra...

Page 48: ...s to the formation of residues difficult to remove When HD WME weather protection is connected and sound level meter turned ON power supply and preamplifier heating avoid condensation of humidity on the microphone membrane When the sound level meter is OFF heating of the preamplifier is disabled and it s therefore possi ble that condensation is formed on the microphone We advise to put the HD WME ...

Page 49: ...ain both for wideband channels and for those with a constant percentage bandwidth In case of continuous instrument drifts it is suggested to carry out an acoustic calibration to verify that there are no other problems both in instrument and microphone Operating Procedure Switch on the sound level meter if it is the case press STOP to finish the measurement in progress and make the following proced...

Page 50: ...ra tion just finished At the end the instrument will switch to the SLM display in STOP mode The stabilization on a value far from the reference one indicated by a ΔLeq higher than some tenths means that one of the components of the microphone preamplifier instrument chain was af fected by a considerable drift and if this difference exceeds the maximum limit admissible by the instrument calibration...

Page 51: ...ions provided by this manual Operating Procedure Switch on the sound level meter if necessary press STOP to finish the measurement on progress and perform the following procedure The program will automatically control that the warm up time indicated by a flashing W is over 1 Press PROG and with the help of the DOWN arrow select Acoustic calibration Press SELECT to start calibration 2003 01 01 10 0...

Page 52: ...03 01 01 10 00 Calibr level 94 0dB Leq dBC Confirm calibration 0 1 ACOUSTIC CALIBRATION Last 2003 01 01 10 00 Calibr level 94 0dB Waiting for electric calibration Leq dBC 1 2 5 YES NO 6 At the end if the values of the electrical calibration are acceptable press YES to confirm the new calibration LEFT arrow of the keypad at this point press NO if you want to cancel the whole calibration RIGHT arrow...

Page 53: ...ne polarization 0 1 EXIT Leq dBC 96 1 8 Take out the preamplifier from the calibrator and press EXIT 9 The procedure is over If calibration constants were incompatible with a correct working of the instrument calibration would fail and the message Calibration failed Consult the manual would appear In this case re fer to Troubleshooting page 90 and if necessary contact our service department ...

Page 54: ...dure should it fail a table will be shown with the results of the in spection If necessary refer to Troubleshooting page 90 and if needed contact our service de partment FIRMWARE UPGRADE The firmware that is the program managing all of the instrument functions can be upgraded by transferring the file from a PC to the HD2010UC through the serial USB port In this way all the instrument functions can...

Page 55: ...evel the instrument will automatically shut off Data stored on memory will remain The in strument cannot be switched on again until the battery level remains low The battery charge level is available on the menu main screen and on the program screen ex pressed as a percentage value Press MENU or PROG to view it When the level is indicated by 0 5 minutes of autonomy are left The battery symbol chan...

Page 56: ...atteries Use waterproof and good quality batteries if possible alkaline If the instrument does not turn on after battery replacement Remove one of the batteries Wait at least 5 minutes for the sound level meter internal circuits to discharge Put the new battery in If the batteries are charged the instrument should turn on au tomatically INSTRUMENT STORAGE Temperature 25 70 C Humidity less than 90 ...

Page 57: ...th the directions The data are transferred as package size The transfer time is defined by only one of the two units the master The transfer speed is fix at 1 5Mbit s 12Mbit s or 480Mbit s according to the USB stand ard and the kind of connected device The two devices connected through the USB interface are identified as master and slave The master supplies power to the slave and decide the sense ...

Page 58: ...I O DP Datum 4 I O DM Datum 6 Input VBUS Power supply 5V 8 GND Reference ground While the sound level meter is connected to an active terminal DCE active via the RS232 in terface the auto power off is disabled and the instrument cannot be switched off If the instru ment is off the connection to an active terminal DCE active will turn it on Standard parameters of the instrument serial transmission ...

Page 59: ...ach token can be shortened at the minimum number of characters that univocally identify it The example can be shortened as follows SET INP 10 r n Here are the possible command formats A3 SET INTEGRATION_TIME SS MM HH value CRLF A4 SET TIME hh mm CRLF A5 SET DATE aaaa mm gg CRLF A6 SET x_SLM_PARAMETER Parameter abbreviation parameter attribute CRLF A8 SET COMAND value CRLF A10 SET COMAND CRLF C1 KE...

Page 60: ...140 VERBOSE A8 Acknowledge ON OFF default ON Always ON upon power on OVERLOAD_LEVEL A8 Overload level in dB 20 200 INT_MODE A8 Integration Mode 1_PERC_LEVEL A8 Percentile level 1 in 1 99 default 1 2_PERC_LEVEL A8 Percentile level 2 in 1 99 default 10 3_PERC_LEVEL A8 Percentile level 3 in 1 99 default 50 4_PERC_LEVEL A8 Percentile level 4 in 1 99 default 90 1_SLM_PARAMETER A6 SLM parameter 1 see pa...

Page 61: ...eter 4 see parameter list 5_EVN_PARAMETER A6 EVENT parameter 5 see parameter list EVN_PARAMETERS A8 Recording of EVENT parameters 1 5 ON OFF default OFF EVN_STATISTICS A8 Statistical recording ON OFF default OFF CAL_LEVEL A8 Acoustic calibrator level in dB 90 0 130 0 default 94 0 MIC_CORR A8 Acoustic range correction WND_SHL_CORR A10 Wind shield correction ON OFF default OFF SEQ_TIMER A3 Acquisiti...

Page 62: ...maximum sound pressure level LSmx Z C or A SLOW maximum sound pressure level LImx Z C or A IMPULSE maximum sound pressure level LFmn Z C or A FAST minimum sound pressure level LSmn Z C or A SLOW minimum sound pressure level LImn Z C or A IMPULSE minimum sound pressure level LeqI A Equivalent sound pressure level with Impulse time constant LE A A weighted exposure level SEL Lep d A Daily personal e...

Page 63: ... C1 HOLD key CURSOR C1 CURSOR key CLEFT C1 CURSOR LEFT key CRIGHT C1 CURSOR RIGHT key SER_MON C1 Simulates pressure of the PRINT key for over 2 sec STORE C1 Simulates pressure of the REC key for over 2 sec DATA_LOG C1 REC RUN key PRN_VAL C1 PRINT key without printing the heading EXEC C2 Program execution GROUP STATUS The following table shows the command list of the STT group STATUS Command Descri...

Page 64: ... CALIBRATION 2003 07 31 08 37 The STT DISPLAY commands are listed in the table below Command Format Description SLM D1 Displays 5 selectable parameters in numeric format PROFILE D1 Displays the time profile of a selectable parameter PROB_DISTR D1 Displays the level distribution of probabilities CUMUL_DISTR D1 Displays the percentile levels graph The STT DISPLAY command provides information relevan...

Page 65: ...Formato Descrizione ON E1 Starts memory dump OFF E1 Ends memory dump NEXT_RECORD E1 Requires the transmission of the next record RECORD E1 Requires the transmission of the current record CLEAR E1 Clears memory Data download sequence is DMP ON r n The heading ending in the string MEMORY DUMP r n is printed if there are any data on memory DMP RECORD r n Prints the previous record in binary format DM...

Page 66: ...ound level meter must be configured before being used for data transmission The configuration is carried out automatically by the sound level meter itself according to the following steps 1 Connect the modem to the HD2010UC by means of the HD2110 CSM special cable with M12 connector 2 Connect the modem to the telephone line and the power supply 3 Switch on the modem 4 Switch on the HD2010UC sound ...

Page 67: ...ation 1 Set the parameter MENU Instrument In put Output RS232 Baud Rate to 38 4k 2 Set the parameter MENU Instrument In put Output Serial Device to PRINTER Printer configuration 1 The printer Baud Rate must be the same of the sound level meter 38400 baud 2 Data bits 8 3 Parity None 4 Stop bits 1 5 Handshaking Xon Xoff 6 Auto feed Enabled Connect the HD2010UC sound level meter to the printer by mea...

Page 68: ...utoPlay window to appear For Win dows Vista and Windows 7 operating systems it s shown the window below select auto run exe execution see note 1 in the next paragraph 4 The starting screen of Noise Studio will be opened if the operating system prevents software to start please see note 1 in the next paragraph 5 From starting window of Noise Studio click on USB drive installation to start the drive...

Page 69: ...s it appears the window new hardware installation In Windows Vista and Windows 7 it appears an installation error under device manager in both cases cancel operation disconnect instrument and restart the complete procedure starting from the beginning of this guide VERIFICATION OF PROPER DRIVER INSTALLATION To verify the proper installation procedure proceed as follows On Windows 2000 and XP operat...

Page 70: ...e above items will disappear and they will appear again as soon as the instrument is plugged to USB port In the documentation supplied with the Noise Studio CDRom it s available a detailed version in cluding images of the USB driver management guide ...

Page 71: ...tting is FAT16 type The reader is powered by the sound level meter and doesn t require any external power supply PREPARATION OF A NEW MEMORY CARD Every new memory card needs to be formatted before use by means of the appropriate function of the Noise Studio software The formatting function requires the PC on which the Noise studio Software has been installed to be equipped with a PC Memory card re...

Page 72: ... sound level meter identifies the device The display of the sound level meter shows MC connected and the remaining dimension of memory The LED on the card reader signalizes the connection 6 If the display visualizes Connection failed check carefully if the memory card has been in troduced correctly into the slot and if the connector is plugged in properly When HD2010 MC interface is connected to t...

Page 73: ...ard The program can be activated only after having connected the memory card interface HD2010 MC as described in the chapter Connection of HD2010 MC to the sound level meter and use of the memory card During data download which occurs automatically the remaining memory space of the card and the estimation of program completion time are displayed on the screen The data transfer from the sound level...

Page 74: ...amplifier is provided with CTC device for electrical calibration it can be plugged into the sound level meter o using the 5mt extension cable provided 10mt as an option Suitable for inch microphones HD2010PNE4 preamplifier for MC24E microphone Equipped with CTC calibration de vice for electric calibration and driver for cable up to 100m Requires the HDP079A02 mi crophone adapter HD2010PNE4H preamp...

Page 75: ...ction unit HD WME In order to make measurements with the maximum possible precision in different situations the HD2010UC sound level meter can automatically apply spectral corrections needed to measure in random field conditions or with the windshield or with the all weather outdoor protection Spectral correction for diffuse field measurement is enabled setting parameter Menu Calibration Mic Resp ...

Page 76: ...ectral correction applied to HD2010UC sound level meter when used with HD WME outdoor protection please refer to UC52 microphone user manual Self generated Noise The intrinsic noise measured replacing the microphone with the capacitive adapter is shown in the following tables according to the different frequency weightings either for RMS level or peak level measurements Input Gain dB Intrinsic noi...

Page 77: ...GHz and amplitude equal to 10V m modulated 80 at 1 kHz Reference Conditions The measuring range is that with input gain equal to 10 dB The level corresponds to 94 dB The acoustic calibration can be performed at a sound level included in the range 94dB 124dB The reference direction of the acoustic signal is that of the preamplifier longitudinal axis The reference acoustic field is the free field Op...

Page 78: ...below 3 9V the sound level meter cannot perform any measurement However it is possible to access and download the data in the internal memory Under 3 5V the instrument will automatically shut off Logged data and configuration parameter are maintained even without power supply Input maximum levels The maximum tolerable sound level with UC52 microphone is 146 dB The level of the electrical signal ap...

Page 79: ...rt or Lpk Sampling 1 8 s Classes from 0 5 dB Measurement range 30 dB 140 dB 4 percentile levels programmable between L1 to L99 Statistical graphs calculation and display Advanced Data Logger option Graph of distribution probability of the levels Graph of the percentile levels from L1 to L99 DISPLAY Graphic display 128x64 pixels backlit on a 56x38mm surface Mode SLM sound level meter screen with 3 ...

Page 80: ...ing the Delta Ohm sound level meters The functions in these mod ules are specifically developed for given applications such as noise analysis in the workplace or railway traffic noise analysis and can be enabled on a licence protected hardware key CH20 Workers Protection module cod NS1 module is used to get and process the sound meas urements performed in workplaces Data are transferred from the s...

Page 81: ...Direct printing of logged parameters printing of a single event Continuous Printing Monitor Case Dimensions Length x Width x Height 445x100x50mm equipped with preamplifier Weight 740g batteries included Materials ABS rubber Time Date and time clock and date updated in real time maximum deviation is less than 1min month ...

Page 82: ...or 2 ITALIAN LAWS Noise in working environment D L 81 2008 UNI 9432 2011 ISO9612 11 and Directive 2008 46 CE Acoustical climate assessment and monitoring Advanced Data Logger option with sound events capture Advanced Data Logger option Noise of entertainment dancing spaces D P C M 215 del 16 04 99 Noise emission from machines D L 262 del 04 09 2002 Directive 2000 14 CE and 2005 88 CE ...

Page 83: ... 1 microphone with HD2010PNE4 preamplifier com plete with HDP079A02 microphone adapter and MC24E microphone with 2 mV Pa sen sitivity Available only for the kit HD2010UC Kit1 HD2010 O1 4H Microphone chain for high levels measurements up to 180dB replaces HD2010PNE2 preamplifier and UC52 1 microphone with HD2010PNE4H preamplifier complete with HDP079A02 microphone adapter and MC24EH microphone with...

Page 84: ...le Acoustic climate analysis on a daily weekly and annual basis including road railway and airport noise The software performs statistical and spectral anal yses and automatically identifies noisy events The analyses are performed in compliance with the national D L 194 2005 and D M 16 03 1998 and EU legislation regarding the acoustic pollution and the mapping of the territory NS4 Monitor module A...

Page 85: ...n cable 10 m on request HD2010PNE4 preamplifier for MC24E microphone Equipped with CTC calibration device for electric calibration and driver for cable up to 100m Requires the HDP079A02 microphone adapter HD2010PNE4H preamplifier for MC24EH microphone Equipped with CTC calibration de vice for electric calibration and driver for cable up to 100m Requires the HDP079A02 micro phone adapter ...

Page 86: ...lly If you press HOLD during the measuring phase the display update will be temporarily inter rupted When HOLD is pressed again the updating will continue Even if the display is not updated the instrument will go on measuring Pressing PAUSE acquisition and calculation of the integrated parameters will be temporarily interrupted When in PAUSE the calculation of integrated parameters such as for exa...

Page 87: ...me to print the on screen data To activate the continuous printing Monitor press and hold down PRINT for at least 2 seconds The flashing letter M over the status indicator indicates that the Monitor function has been activated The Monitor function remains active even when jumping to other measuring views and can be disabled pressing PRINT again or START STOP RESET to stop measurement STORAGE OF ME...

Page 88: ... in STOP mode and the Advanced Data Logger option is installed you will be prompted to choose between automatic AUTO and manual MAN storage the current screen will be stored if choosing the latter The Continuous Recording allows recording the time profile of instantaneous and integrated levels This means that you can record for example the sound pressure level with FAST time con stant 8 times a se...

Page 89: ...ENU Instrument Measurement Percentile Lev 1 4 programmable between L1 and L99 The statistical analyzer samples the sound pressure A weighted level with FAST time constant 8 times a second the levels are accumulated in 0 5dB classes The percentile levels are calculated interpolating the cumulative distribution The Advanced Data Logger option can be used to choose which parameter the statistical ana...

Page 90: ...esent and undamaged Try again after having waited for the end of the stabilization time and if the problem re mains load the factory calibration following these steps Ensure that acquisition is on STOP Remove one of the batteries while the instrument is switched on this operation ensures that all the instrument internal circuits are discharged Press and hold ENTER down and then insert the battery ...

Page 91: ...oad factory calibration Check that the microphone protection grid is screwed down on the capsule securely 3 Upon turning the sound level meter on it turns off automatically right after the introduction screen The batteries are flat 4 The sound level meter does not communicate with the PC Check that the sound level meter and PC communication speed is the same MENU Instrument Input Output Baud Rate ...

Page 92: ... on or off the instrument press the ON OFF key for at least one second Upon the power on the instrument shows for a few seconds the manufacturer s logo and the program version Then it switches to the SLM working mode Sound Level Meter and displays 5 instantaneous or inte grated measurement parameters in numeric form HD201 0 Sound Level Meter Firmware 303V2 7 56 9 60 8 79 3 30 1 1 0 01 08 25 Tint s...

Page 93: ...ding to its use many parameters to be set If you press MENU you can access all instrument parameters for the following functions Main Sound Level Meter SLM statistical analyzer Advanced Data Logger option Trigger Advanced Data Logger option Recording Advanced Data Logger option Calibration Sequencer Advanced Data Logger option Inside the menus you can Move from one item to the other within the sam...

Page 94: ...ess SELECT to activate the selected program These are the available programs Memory Navigator with the Advanced Data Logger option allows accessing stored data and viewing them on the instrument display It works both with single session data and with multi ple ones See details on pag 42 Electric Calibration single frequency 1kHz with electrical signal coming from the built in si nusoidal reference...

Page 95: ...in fast forward mode REC key If REC is pressed and hold down for at least 2 seconds the displayed data are stored as a single re port You can also activate the automatic recording of the parameters displayed on the SLM screen see THE RECORD FUNCTION on page 30 When the Advanced Data Logger option is installed the REC key combined with START STOP RESET activates the data logging Starting from the S...

Page 96: ...le and of the frequency spectra moving the graph upwards MODE key If Advanced Data Logger option is installed the MODE key selects the different display modes of the instrument from SLM to Time Profile Probability Distribution Cumulative Distribution All operating modes are active at the same time even though not displayed using the MODE key you can select the display mode without affecting measur...

Page 97: ...during the selection of a measuring variable that needs the definition of more than one pa rameter see SELECT DOWN key The DOWN key selects the next line in the menus or decreases the selected parameter CURSOR Keypad It activates the cursors in a graph Press it repeatedly to activate in sequence the first cursor L1 the second one L2 or both of them in tracking ΔL To disable the cursors press the k...

Page 98: ...HD2010UC 98 V4 2 RIGHT Keypad The RIGHT key moves rightwards the cursor or the two active cursors flashing ...

Page 99: ...mx dBX Sound pressure maximum level SPLmax X Z C A Y F S I LXYmin LYmn dBX Sound pressure minimum level SPLmin X Z C A Y F S I LXpkmax Lpkmx dBX Peak maximum level X Z C Lnn Li i 1 4 nn nn percentile with nn 1 99 3 A F A weighting PARAMETER ABBREV DEFINITION WEIGH FREQ WEIGH TEMP LAE LE dBA Exposure level throughout the measure ment time SEL A Dose A Dose Dose percentage with programmable ex chang...

Page 100: ...rs PARAMETER ABBREV DEFINITION WEIGH FREQ WEIGH TEMP LXeq Leq dBX Equivalent continuous level X Z C A LXYmax LYmx dBX Sound pressure maximum level SPLmax X Z C A Y F S I LXYmin LYmn dBX Sound pressure minimum level SPLmin X Z C A Y F S I LXpk Lpk dBX Peak maximum level X Z C SEL LE dBA Sound exposure level A Lnn Li i 1 4 nn nn percentile with nn 1 995 LAIeq LeqI dBA A weighted equivalent continuou...

Page 101: ... Sound pressure maximum level SPLmax X Z C A Y F S I LXYmin LYmn dBX Sound pressure minimum level SPLmin X Z C A Y F S I LXpk Lpk dBX Peak maximum level X Z C SEL LE dBA Sound exposure level A LAIeq LeqI dBA A weighted equivalent continuous level with Impulse time constant A I Statistical analysis on a selected parameter PARAMETER ABBREV DEFINITION WEIGH FREQ WEIGH TEMP LXeq Leq dBX Equivalent con...

Page 102: ... 1 year If the Advanced Data Logger is installed the storage of Reports and Events is made by units rec ord which are recorded corresponding to each interval Menu Instrument Measurements Report Time or for each event Each unit is made of one Header followed by the parameters ena bled in the Menu Data Logger Report and Event The following table explains the memory occupancy in byte for each block c...

Page 103: ... of the sound pressure Similarly the increase of the level is equal to 6 dB for each doubling of the sound pressure The use of decibels to indicate the sound level has besides the evident advantage to reduce the measurement numeric range the advantage of providing a good approximation of the audible perception that follows the sound pressure on a logarithmic scale Not all pressure variations are a...

Page 104: ...to noises distributed over a wide interval of frequencies The reason is to be found in the sound energy concentration in the ear mechanics Usually the sound level is not static but it changes with time If the variation is very rapid the ear cannot feel the real intensity In case of sound pulses we know that the ear has a reduced perception already for durations lower than 70 ms For this reason noi...

Page 105: ...e sound level is corrected by C weighting it is referred to as LCp and simulates the perception of high sound levels When there is no interest in sound perception measurements are carried out using Z weighting LIN for IEC 60651 that represents a constant response to all frequencies in the sound field TIME CONSTANTS AND EXPONENTIAL WEIGHTING Further processing of the microphone signal is needed whe...

Page 106: ... using the FAST SLOW and IMPULSE time constant by a sur face mount machine The displayed levels are the maximum levels calculated on intervals equal to 1 8s The most variable profile is the FAST profile 8dB while the less variable is the SLOW one 3dB The IMPULSE profile is systematically higher than FAST and SLOW as it reflects the impulsive nature of the noise issued by the machine Impulsive soun...

Page 107: ...its propagation transports energy it is im portant to account for the duration of the sound event in order to interpret the energy content cor rectly This is particularly important in assessing the impact of the sound produced by machines or general pollution sources on the auditory apparatus It is obvious that a strong noise generates a growing damage proportional to exposure Evaluation of potent...

Page 108: ...ergy of the event being examined By standardizing the SEL value 1 second it is possible to compare sound events with different durations STATISTICAL ANALYSIS If you need to examine from a statistical viewpoint the distribution in time of the sound pres sure level you have to use the percentile levels A percentile level symbolized as Lx is defined as the sound level being exceeded by the X percenta...

Page 109: ...or levels higher than the maximum measured level The percentile levels are calculated interpolating the cumulative distribution For example if from the analysis of the noise of a traffic road you detect that the sound level usu ally A weighted examining the auditory impact remains higher than 74dB half the time the per centile level L50 is 74dB The integrating sound level meters directly supply th...

Page 110: ...mation at a distance from the source high er than its bigger dimension and in any case higher than the bigger wavelength of the generated noise The free field is significantly disturbed by the closeness of rigid walls capable of reflecting sound levels comparable with those due to the acoustic pressure waves coming directly from the source The acoustic field in an environment where sound waves ref...

Page 111: ...rom rain and snow and keep it clean In case of bad weath er it is suggested to use a windshield and in case of use in very humid environments the proper microphone dehumidifier should be applied Pressure Microphone sensitivity depends on atmospheric pressure Sensitivity increases as pressure decreas es and the change of sensitivity for the HD2010UC with the UC52 microphone measured at 250 Hz is al...

Page 112: ...ters the sound field thus keep the instrument as far as you can from your body For better accuracy position the sound level meter on the tripod especially for spectral analyses Best results are obtained if only the pream plifier is mounted on the tripod and the extension cable is used to connect it to the instrument CLASSIFICATION OF ACOUSTIC SIGNALS Acoustic signals can be classified according to...

Page 113: ...the same equiva lent level For example in the analysis of the noise made by car traffic it is convenient to measure the so called statistical levels or percentile levels providing a description of noises fluctuating in time The statistical levels provide the sound level exceeded by a certain percentage of the measur ing time and are represented with the symbol Lx where x is the percentage value fo...

Page 114: ...HD2010UC 114 V4 2 TNI 4 L10 L90 Leq That provides higher values in the case of a sound level strongly fluctuating and thus characterized by a bigger difference between L10 and L90 ...

Page 115: ...t A5 1 Disassembly To completely disassemble the unit a 1 5mm male hex key and a 14mm wrench are needed To separate all components of the unit proceed as follows to extract the group preamplifier micro phone capsule to calibrate start from step 3 1 Remove the anti bird spike by loosening the three hex head screws at the base of the windscreen 2 Pull up the windscreen HDSAV3 and the rain protection...

Page 116: ...onnect the cable connected to the preamplifier 5 Unscrew the lock nut of the preamplifier C using if required a 14mm wrench Be careful not to twist the preamplifier cable 6 Remove the preamplifier D by pulling it slowly down At this point the microphone is accessi ble and you can proceed with calibration A B C ...

Page 117: ...cribed in the next paragraph A5 2 Assembly To assemble the unit a 1 5mm male hex key and a 14mm wrench are needed To assemble completely the protection start from step 1 If you need only to assemble the preampli fier with the microphone after calibration from step 4 1 Fit the rain shield HD WME2 on the metal grid support D HD WME2 ...

Page 118: ...HD2010UC 118 V4 2 2 Insert the wind screen HD SAV3 3 Apply the anti bird spike and secure it using the three hex head screws located on the support at the base of the windscreen HD SAV3 ...

Page 119: ...UC 119 V4 2 4 Insert the preamplifier A into the support pushing slowly upward until it s limit position 5 Screw the gland B using if necessary a 14mm wrench Be careful not to twist the preamplifier cable A B ...

Page 120: ...C 120 V4 2 6 Insert the cable connected to the preamplifier through the system C and screw the stern to the support 7 Screw the terminal placed at the lower end of the stern D releasing the cable laterally C D ...

Page 121: ...HD2010UC 121 V4 2 8 To secure the outdoor protection you can use the threaded end D or you can apply the fitting E on the tripod The terminal E has two threads and E ...

Page 122: ...ce for the calculation of the pressure level it equals 20 10 6 Pascal and corresponds to the average human audibility threshold at a fre quency of 1 kHz Effective Value sound pressure effective value prms is the value of constant pressure that is ener getically equivalent to the instantaneous value p in a given time interval T 2 1 1 2 t t rms dt t p T p where T t2 t1 is the considered time interva...

Page 123: ... called IMPULSE I has been defined for the identification of impulsive components presenting a time constant for increasing levels equal to 35ms while for decreasing levels it equals 1 5s The sound pressure level can be weighted both in frequency and in time For example LAFp will in dicate a frequency weighted level with A filter and with FAST time constant Sound Pressure Peak Level referred to as...

Page 124: ... Let s suppose we measured Leq 1 80 dB over 1 h Leq 2 90 dB over 2 h Leq 3 50 dB over 5 h t1 t2 t3 L1 L2 L3 3 2 1 10 3 10 2 10 1 10 3 2 1 10 10 10 log 10 T T T T T T L eq eq eq L L L T eq Leq 1 Leq 2 Leq 3 partial equivalent levels T1 T2 T3 integration times of partial equivalent levels Leq T total equivalent level In the example T 1 h 2 h 5 h 8 h The result is dB 2 84 8 10 5 10 2 10 1 log 10 L 5 ...

Page 125: ...AE will indicate the level of frequency weighted sound exposure with A filter Dose In the field of environmental noise monitoring preventing auditory injuries the measurement of the noise Dose is used It is meant as a percentage fraction of a daily maximum exposure to noise dt T Q D T q L L c c 0 10 100 D Q exposure percentage for an Exchange Rate equal to Q Tc daily exposure time usually 8 hours ...

Page 126: ... FUNCTION 23 DESCRIPTION OF THE DIFFERENT INTEGRATION MODES 25 SINGLE INTEGRATION 26 MULTIPLE INTEGRATION REQUIRES THE ADVANCED DATA LOGGER OPTION 27 PRINT AND MONITOR FUNCTIONS 29 THE RECORD FUNCTION 30 MANUAL AND AUTOMATIC SINGLE RECORDING 30 CONTINUOUS RECORDING 31 CONTINUOUS RECORDING OF REPORT AND EVENTS GROUPS 32 DESCRIPTION OF THE MENU FUNCTIONS 35 INSTRUMENT 36 Identification 36 System 36 ...

Page 127: ...LEVEL METER TO MEMORY CARD 73 TECHNICAL SPECIFICATIONS 73 TECHNICAL SPECIFICATIONS 74 METROLOGICAL CHARACTERISTICS 75 ELECTRICAL CHARACTERISTICS 78 STATISTICAL ANALYSIS 79 DISPLAY 79 STORAGE OF MEASUREMENTS 80 PROGRAMS 80 OTHER CHARACTERISTICS 81 REFERENCE STANDARDS 82 ITALIAN LAWS 82 ORDERING CODES 83 WHAT SHALL I DO IF 86 MEASUREMENT PROCEDURE 86 STORAGE OF MEASUREMENTS WITH THE ADVANCED DATA LO...

Page 128: ...stical Analysis 108 Noise Dose 110 Acoustic Field 110 Environmental influence 111 Precautions and General rules of use 112 Classification of acoustic signals 112 A5 MICROPHONE OUTDOOR PROTECTION HD WME ASSEMBLY DISASSEMBLY AND MAINTENANCE 115 A6 DEFINITIONS 122 ...

Page 129: ...HD2010UC 129 V4 2 NOTES ...

Page 130: ...HD2010UC 130 V4 2 NOTES ...

Page 131: ......

Page 132: ...zed third parties is excluded from the guarantee The instrument shall be returned FREE OF SHIPMENT CHARGES to your dealer The jurisdiction of Padua applies in any dispute The electrical and electronic equipment marked with this symbol cannot be disposed of in public landfills According to the Directive 2011 65 EU the european users of electrical and electronic equipment can return it to the dealer...

Page 133: ...he result of the constant development of the product This may produce some differences between the information written in this manual and the instrument you have purchased We cannot completely exclude the possibility of errors in the manual for which we apologize The data images and descriptions included in this manual cannot be legally asserted We reserve the right to make changes and corrections...

Page 134: ...GHM GROUP Delta OHM Delta Ohm S r l a socio unico Via Marconi 5 35030 Caselle di Selvazzano Padova ITALY Phone 39 049 8977150 Fax 39 049 635596 www deltaohm com info deltaohm com V4 2 05 02 2020 ...

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