CEL-35x dBadge User Manual HB3323-08
Contents
1. Y to confirm Once all the options within the configuration menu have been set the display will return to the standard screens as described in section 5 Casella CEL 35X dBadge Users Handbook Page 25 CASELLA 5 7 Display Mode The selected display mode specifies which key results are displayed on the screen upon completion of a measurement run Regardless of which display mode is set the dBadge measures ALL parameters during every measurement run Once downloaded to the Casella insight data management software all measured data can be viewed The key displayed results set can be either configured to ISO for Europe or OSHA for U S A as shown in the table below DATA ISO OSHA Instantaneous SPL LAF LAS Time Averaged Parameter Reds Leea PM esa Peak Value LCpeak LZpeak Dose Value Pa Hours Dose Projected Projected Dose Dose CEL 352 dBadge Plus model only For a definition of each of these terms please see Appendix 1 section 10 1 Note that for the OSHA data the LAayg and the dose data use a threshold of 80dB and a criterion value of 90dB For a full list of all the measurement parameters available from Casella insight data management software please refer to Appendix 1 section 10 2 Casella CEL 35X dBadge Users Handbook Page 26 CASELLA 5 8 Alarm Settings Alarm levels can be set within the Casella insight data management software based on action levels2. 352 dBadge Plus measures additional values which allow for the selection of hearing protection via the Single Number Rating SNR or High Medium Low HML methods Badge CASELAS CEE GEL 35x 5 Casella CEL 35X dBadge Users Handbook Page 6 CASELLA 2 SUPPLIED EQUIPMENT Carefully remove all components of the dBadge from the shipping container and check for possible damage or any missing items If any items are not present or damaged please contact Casella CEL immediately The following components should be included CEL 35X dBadge includes microphone CEL 252 windshield CEL 6356 and calibration certificate Or CEL 35X IS I S dBadge includes microphone CEL 252 windshield CEL 6356 and calibration certificate Where CEL 35X represents either a CEL 350 or CEL 352 CEL 6351 Pin Mounting Kit CEL 6352 Crocodile Clip Mounting Kit fitted to CEL 35X Instrument kits include the following parts HB 3323 dBadge Instruction Manual on CEL 6357 software CD HB 3324 Field Guide printed hard copy CEL 6362 3 way Charger Unit including PC18 Power Supply Unit CEL 6355 Kit Case for up to 10 dBadge Units CEL 120 2 Class 2 Acoustic Calibrator including calibration certificate 193200B Infra Red Download Cable includes screwdriver CEL 6357 Casella insight data management software on CD including HB 3325 Software Manual and HB 3323 dBadge Manual HK111 Screwdriver for changing mounting clips If a kit with 10 d
3. CEL 6362 charger for charging up to 12 dBadge units as shown in Figure 7 below PC18 Powersupply CH 6363 Expansion charger kit 3 Way Charger C6359 0 2 link cable CH 6362 3 Way charger Kit 3 Way Charger PC18 Power supply sen x4 CHARGER BASES IN TOTAL Figure 7 Casella CEL 35X dBadge Users Handbook Page 13 CASELLA 5 GENERAL OPERATION 5 1 Switching on the dBadge Once the instrument is switched on by pressing the L key it will display a start up sequence shown in Figure 8 This displays the dBadge model number and firmware version e g V1 07 followed by the Custom Text screen This text can be configured using the Casella insight data management software The screen will then change to the current time and date This will automatically be set to the internal clock of the PC every time the dBadge is downloaded to Casella insight data management software CASELLA Screen will show CEL CEL 350 wo 350L on dBadge Lite model or CEL 352 on v dBadge Plus model JOE BLOGGS CONSULTANTS Y 523 JUL 05 13 45 03 Figure 8 The next screen shows the remaining battery life and memory as shown in Figure 9 The caution symbol amp will be displayed on the left of the display if remaining memory or battery life are under 2 hours The
4. IIA IIB and IIC and with temperature classes T1 and T2 The equipment is only certified for use in ambient temperatures in the range 20 C to 40 C and should not be used outside this range Repair of this equipment shall only be carried out by the manufacturer or in accordance with the applicable code of practice If the equipment is likely to come into contact with aggressive substances then it is the responsibility of the user to take suitable precautions that prevent it from being adversely affected thus ensuring that the type of protection is not compromised Aggressive substances e g solvents may affect polymeric materials Do not charge the batteries in a hazardous area Only charge the CEL 35X or CEL 35X IS using the recommended charger CEL 6362 The CEL 120 2 must only be used to calibrate the CEL 35X or CEL 35X IS in a non hazardous atmosphere Casella CEL 35X dBadge Users Handbook Page 4 CASELLA CONTENTS rpie leps MMe 6 2 SUPPLIED EQUIPMENT cor sx peo taR Ea RR REREERRMRE RAE REN RR E ESEHFPR RSEN EFURRR SER Sept v kSS 7 3 THE SYSTEM COMPONENTS ront n ara apo uan p pE Pon Rari arx RE FR nnmnnn 9 3 1 The CEL 35X dBadge NER se uasyne deetceie cuetereaseue 9 3 2 Mounting APS save eee 9 3 3 The CEL 6362 Charger MCN 10 3 4 The Windshield ani iuc ols se tanda bnt Sce ihe neptis oe tua trn tte 11 A CHARGING THE CEL 35X iiueenctusuxuanusa nu un E
5. manual when changing dBadge mounting clips as placing the incorrect screw in the wrong hole can damage the dBadge Environmental Considerations e Do not dispose of electronic equipment as municipal waste e The WEE symbol shown above indicates that separate collection systems should be used Casella CEL 35X dBadge Users Handbook Page 3 CASELLA Instructions specific to hazardous area installations reference European ATEX Directive 94 9 EC Annex ll 1 0 6 The following instructions apply to equipment covered by certificate number Sira 07ATEX2032X for the CEL 35X IS dBadge series The certificate number includes an X suffix indicating that the following special conditions of certification apply 1 Parts of the enclosure are non conducting and may generate an ignition capable level of electrostatic charge under certain extreme conditions The user should ensure that the equipment is not installed or used in a location where it may be subjected to external conditions such as high pressure steam which might cause a build up of electrostatic charge on non conducting surfaces Additionally cleaning of the equipment should be done only with a damp cloth The dBadge Noise Dosemeter shall not be used in areas where a layer of coal dust may be deposited on the enclosure The microphone should not be removed in a hazardous area The equipment may be used with flammable gases and vapours with apparatus Groups
6. next screens show the instantaneous sound pressure level SPL currently being measured by the microphone and the current clock time set within the instrument m T urs MEMORY 80urs 13 45 03 F LAF 112 3 Figure 9 Casella CEL 35X dBadge Users Handbook Page 14 CASELLA The subsequent screens will cycle through results from the last measurement run as shown in Figure 10 Values shown will be dependent on whether the CEL 35X is configured to display ISO or OSHA parameters see sections 5 6 amp 5 7 ISO VIEW OSHA VIEW Additional screen on CEL 352 dBadge Plus model LCEQ 92 4 dB Figure 10 Note If Pro Mode is enabled additional menus will be displayed see section 5 5 The over range symbol will be shown if the CEL 35X has been exposed to noise over the linear operating range The screens will continue to automatically cycle through as shown in Figure 9 and 10 until another action is performed Pressing the R key will stop the screens cycling for 5 seconds Screens can also be manually cycled through by pressing the R key repeatedly Note that if the memory is currently empty the screens shown in Figure 10 will not be shown 5 2 Calibration It is important to calibrate each dBadge before and after use in accordance with workplace noise regulations The dBadge records calibration levels and times which can be viewed later on Casella insight data management software Note that
7. twice per second Note that for peak levels the action level only needs to be exceeded once during the day for the employee to be over the relevant action level However for the time averaged data Leq and Lavg the LED may switch on and off depending on how the employees exposure varies throughout the day It is important to realise alarm indications are based on the average or peak levels since the start of the run and not averaged to 8 hours Casella CEL 35X dBadge Users Handbook Page 28 CASELLA 6 MOUNTING THE CEL 35X The recommended location for mounting a noise exposure meter varies depending upon the legislation specific to a country Most countries recommend a position close to the ear 10 15cm so the dBadge can be mounted on a collar or shoulder The UK legislation recommends mounting on the top of the shoulder to avoid reflections from the head and body affecting the measurements as much as possible All mounting clips are attached to the CEL 35X dBadge by two screws By removing the screws with the screwdriver provided the mounting clips can be changed As shown in Figure 25 please reinsert the screws into the correct hole otherwise damage could be caused to the dBadge Correct Screw Orientation Figure 25 6 1 CEL 6351 Pin Mounting Clips These clips can be mounted to a variety of clothing Caution should be used when fitting these to an employee to avoid piercing the skin These clips should not be used on fir
8. 0 2 Measured PARENT 40 10 3 Using the CEL 352 for the Selection of Hearing Protection 41 10 4 ATEX Certificate Luanda een a ale e etn nn e 43 VS FM CSUN t 43 Casella CEL 35X dBadge Users Handbook Page 5 CASELLA 1 INTRODUCTION The CEL 35X family consists of the CEL 350 dBadge CEL 350L dBadge Lite and the CEL 352 dBadge Plus The CEL 35X dBadge is a unique solution to problems associated with the measurement of personal noise exposure Using the latest digital technology ensures reliable and repeatable measurements The CEL 35X dBadge has no cable like a traditional dosimeter so is far easier to fit to an employee and is less likely to interfere with the individuals work Casella CEL provides various mounting options for the dBadge The CEL 35X dBadge is very simple operate with just 2 keys and can be locked to prevent tampering After a measurement has been completed the noise badge can be downloaded via it s infra red port to the Casella insight data management software This will allow comprehensive analysis of an employee s exposure This manual describes the operation of the CEL 35X dBadge and the associated mounting options as well as charging the dBadge Use of the CEL 35X IS Intrinsically Safe I S dBadge is described including special requirements for use under ATEX certification The CEL 350L is an entry level model that does not store the time history of the noise data The CEL
9. Badges was purchased the following item will be present CEL 6363 3 way charger extension unit including C6359 0 2 cable Casella CEL 35X dBadge Users Handbook Page 7 CASELLA Optional items at time of order D8147 Z 3 Point Harness CEL 6351 Spare Pin Mounting Kit 5 Pack CEL 6352 Crocodile Clip Mounting Kit 5 Pack CEL 6354 Hard Hat Mounting Kit CEL 6356 Spare Windshield CEL 90336 USB Adaptor Casella CEL 35X dBadge Users Handbook Page 8 CASELLA 3 THE SYSTEM COMPONENTS 3 1 The CEL 35X dBadge The CEL 35X aBadge and controls are shown below in Figure 1 The two controls are the Left L and the Right R keys Windshield Left L Key Power Key V Right R Key LED Window Display Figure 1 3 2 Mounting Clips Upon delivery the CEL 35X will be fitted with the CEL 6352 Crocodile mounting clips as shown in Figure 2 Mounting clips can be changed using the screwdriver provided For information on changing the mounting clips please see section 6 Casella CEL 35X dBadge Users Handbook Page 9 CASELLA Crocodile Mounting Clips Figure 2 3 3 The CEL 6362 Charger A CEL 6362 is a drop in intelligent 3 way charger unit required to charge the internal Nickel Metal Hydride NiMH batteries on the CEL 35X dBadge The CEL 6362 consists of the charger base part number 193102B 01 and the PC18 mains power supply unit PSU The PSU will require fitting with an a
10. CASELLA November 2015 CEL 35x dBadge Including Intrinsically Safe 1 S Versions User Manual HB3323 08 Casella CEL 35X dBadge Users Handbook Page 1 CASELLA UK Office Casella Regent House Wolseley Road Kempston Bedford MK42 7JY Tel 44 0 1234 844100 Email info casellasolutions com United States China India Gasella Inc Ideal Industries China Ideal Industries India PVT Ltd 415 Lawrence Bell Drive No 81 Lane 1000 228 230 Spazeuge Unit 4 Zhangneng Road Tower B Sahna Road Sector 47 Buffalo Pudang District Gurgaon 122001 MY 14221 Shanghai 20 1203 Haryana USA China India Phone 1 718 2753040 Phone 88 21 31263188 Phone 91 124 4495100 Email info casellausa com Email info casellasolutions cn Email Casella Sales ideal industries in Casella CEL 35X dBadge Users Handbook Page 2 CASELLA Caution UNDER NO CIRCUMSTANCES should this equipment be cleaned using a solvent based cleaner The CEL 35X dBadge contains no user serviceable parts do not open product case as this would invalidate the warranty When in use always use the windshield provided Use only the recommended CEL 252 microphone Damage caused by a failure to observe these warnings will NOT be covered by the normal warranty conditions When using the CEL 6351 pin mounting clips care should be taken when fitting them to an employee so that the skin is not pierced accidentally Please refer to section 6 2 of this
11. CEL 6354 Fitted to a Mounting Kit Hard Hat Figure 29 Casella CEL 35X dBadge Users Handbook Page 31 CASELLA 7 TECHNICAL SPECIFICATION 7 1 Specification Sound Exposure Meter Dosimeter Standards IEC 61252 2002 BS EN 61252 1997 ANSI 51 25 1992 for dosimeters and sound exposure meters The CEL 35X conforms to the requirements for EMC emissions and immunity as specified in IEC 61000 4 2 6 1 61000 4 6 6 2 61000 4 3 CISPR 61000 6 3 Electromagnetic and electrostatic compatibility The CEL 35X was tested with a pink noise acoustic source of 85dB and complies with the immunity requirements of clause 15 IEC 61252 No additional devices are connected during normal use There is no degradation in performance or loss of functionality following the application of electrostatic discharges All settings and orientations of the instrument have similar radio frequency emissions These radio frequency emissions are within the specified limits of this standard All modes of operation have similar immunity to power and radio frequency fields Linear Operating Range 65 0 140 3dB A RMS Peak Measurement Range 95 0 143 3dB C or Z Sound exposure Range 0 01 99999 Pa Hours 0 01 99999 Freq Weightings A C and Z Type 2 Time Weightings Fast Slow and Impulse Amplitude Q 3 or Q 5dB exchange rates Threshold 70 90dB in 1dB steps via Casella insight data management software Criterion 70 90dB in 1dB steps v
12. NG AND WARRANTY ARRANGEMENTS To ensure conformity with the specification this instrument is thoroughly inspected and it s accuracy verified prior to dispatch All technical information is filed under the instrument serial number which should be quoted in any correspondence The manufacturer undertakes to rectify any defect in the instrument directly attributable to faulty design or assembly and which becomes apparent during the warranty period In order to take advantage of this warranty the instrument must be returned carriage paid to the manufacturer s factory or accredited agent where necessary repairs will be carried out The warranty period runs for 24 months from the date of receipt of goods with exceptions on certain specialised components supplied by other manufacturers that may be warranted for shorter or longer periods by their actual manufacturers In all such cases the benefit of these undertakings will be passed on to the user CASELLA CEL s liability is limited to items of their own manufacture and they do not accept liability for any loss resulting from the operation or interpretation of the results from this equipment To obtain repair under warranty the instrument should be packed and returned in it s original packing or an equivalent either to CASELLA CEL s local agent or in the case of U K domestic sales to the CASELLA CEL Service Department at Bedford Please include the following information Instrumen
13. ation menu is accessed by holding the R key down whilst switching on the dBadge L key see Figure 23 English French German Italian Spanish Portuguese Yes No OSHA ISO Pro Mode Only Yes No me NN m rim Figure 23 Casella CEL 35X dBadge Users Handbook Page 23 Pro Mode OSHA Only Yes NO 8048 9008 80 9008 CASELLA The first configuration screen to be displayed is the contrast menu For each option within these menus press the L key to adjust what is on the screen then press R Y to confirm and move to next screen Contrast setting You can adjust the display contrast for best viewing of the text on screen There are 6 different contrast levels available Language setting You can select one of the pre programmed languages that are available Currently these are English French German Italian Spanish and Portuguese Pro Mode setting You can select to leave the Pro Mode disabled for simplicity of displayed results or choose to enable it to show the calculated values at the 80 90 80 only or 90 only threshold levels or values of Lex8h and Proj Lex8h Display mode setting You can select either ISO or OSHA display modes for on screen results but both settings are measured and stored for all runs so that relevant data can be seen in the Casella insight data management software program from every run For further de
14. automatically switch on during charging and display how much charge is within the dBadge as shown in Figure 6 When the CEL 35X dBadge is charging the red LED will flash and the charge symbol will rotate on the top right of the display The dBadge will display Full once charging is complete and the LED on the front of the instrument will turn blue This should take approximately 1 5 hours from a discharged state A charging time of about 30 minutes will be sufficient to perform greater than 8 hours of measurement Once fully charged the CEL 35X holds enough charge to run for approximately 28 hours CHARGING 7 EE 27krs FULL 28urs Figure 6 Casella CEL 35X dBadge Users Handbook Page 12 CASELLA Note that once removed from the charger the dBadge will automatically switch off If returned to the charger the CEL 35X will charge for a minimum time of 10 minutes regardless of whether it is fully charged This does not affect battery performance in any way If the battery is fully discharged prior to being placed on a charger the CEL 35X will be trickle charged for a short time prior to the fast charge cycle this prevents damage to the batteries If this occurs a Pre Charge message will appear on the dBadge display 4 2 Linking Chargers Together The main CEL 6362 charger can be linked to the CEL 6363 charger extension unit via the C6359 0 2 cable supplied with the CEL 6363 Up to 3 CEL 6363 units can be linked to the
15. cts the microphone from any potential erroneous results from wind but also helps to protect from any dust ingress moisture or impact damage Before taking a measurement run ensure there is sufficient battery life and memory by looking at the screen shown in Figure 9 If necessary charge the dBadge as described in section 4 1 and clear the memory as described in section 5 6 or download the dBadge to Casella insight data management software Regardless of which display mode is selected ISO or OSHA ALL parameters are stored simultaneously and can be viewed via Casella insight data management software To start the measurement run press and hold both the L and the R keys down together for 3 seconds as shown in Figure 15 Casella CEL 35X dBadge Users Handbook Page 17 CASELLA Press and hold for 3 seconds Press and hold for 3 seconds a oBadge CASELLAS CEL 35X Figure 15 When these keys are held down together the display on the dBadge will begin a count down as shown in Figure 16 The keys must be held down during the countdown for the measurement run to begin START 3 Y START 2 Y Spil Figure 16 Once the measurement run has begun the Play symbol P will appear in the top left of the screen The display will cycle between 2 screens The first displays instantaneous sound pressure level SPL values and the duration of the measurement run so far The second displays the status of t
16. dible frequencies In the dBadge system it is used for the measurement of peak sound pressure level Criterion Level CL This is the normalised eight hour average weighted sound level in dB that corresponds to the maximum permitted daily exposure or 10096 noise dose Criterion Time CT This is the time in hours used in the calculation of the Dose dB A A weighted sound level in decibels dB C C weighted sound level in decibels dB Z Z weighted sound level in decibels Casella CEL 35X dBadge Users Handbook Page 36 CASELLA Decibel dB The standard physical unit for measuring sound level and noise exposure Estimated Exposure in Pa h A calculated estimate of the exposure that would be received by the wearer if the average level measured continues for the period defined by the criterion time Expressed in Pascal squared hours Pa h Fast Time Weighting A standard time weighting applied by the sound level measurement instrument IEC 61252 The International Standard for Personal Sound Exposure Meters LAE The A weighted exposure level is the level that would contain the same amount of energy in one second as the actual noise has during the whole measurement period LAeq The A weighted equivalent level is the level that would contain the same amount of noise energy as in the actual noise effectively giving an average level over the measurement period Following the ISO procedures doubling the energy r
17. e retardant clothing as piercing the outer layer will compromise the employees protection Illustrations of the CEL 6351 and CEL 6352 mounting clips are shown in Figures 26 amp 27 Casella CEL 35X dBadge Users Handbook Page 29 CASELLA CEL 6351 Pin Mounting Kit Figure 26 6 2 CEL 6352 Crocodile Clip Mounting Kit The CEL 6352 crocodile mounting clips are fitted to the CEL 35X dBadge upon delivery as they can be fitted to virtually any clothing type The CEL 6352 is used for attaching the CEL 35X to clothing and should be used where piercing the employees clothing is not desired CEL 6352 Crocodile Clip Mounting Kit Front Rear Figure 27 Note when any of the mounting clips are ordered they are supplied in packs of 5 i e enough to fit 5 dBadge units Casella CEL 35X dBadge Users Handbook Page 30 CASELLA 6 3 CEL 6353 Harness Mounting Kit The CEL 6351 is used for attaching the CEL 35X to the D8147 harness or an existing harness that the employee may wear The CEL 6351 Pin kit and the D8147 are pictured in Figure 28 CEL 6351 Pin Mounting Kit Fitted to D8147 Harness Figure 28 6 4 CEL 6354 Hard Hat Mounting Kit The CEL 6354 hard hat mounting kit can be used to fit the CEL 35X dBadge to most hard hats It consists of a loop with four hooks which loop over the rim of the hard hat The CEL 6351 pin clips are used to connect the hard hat mounting kit to the dBadge sand CEL 6354 Hard Hat
18. eater than 2 PNR M X Loeq Laeq 2 From the example of the hearing protector mentioned above PNR 25 x 102 4 98 6 2 PNR225 1 x1 8 PNR 25 1 8 PNR 23 2dB The A weighted SPL at the ear Laeg PNR The A weighted SPL at the ear 98 6 23 2 75 4 75dB A Note some countries assume that real world factors will effectively reduce the effectiveness of hearing protection For example in the UK a further standard 4dB is taken off the PNR so in this case the value at the ear would be 79dB A Casella CEL 35X dBadge Users Handbook Page 42 CASELLA 10 4 ATEX Certificate For the latest certificate please refer to www casellasolutions com 10 5 FM Certificate For the latest certificate please refer to www casellasolutions com Casella CEL 35X dBadge Users Handbook Page 43
19. ement run is taking place see section 5 4 to stop the measurement Battery Fail Batteries are flat Charge the dBadge see message section 4 1 appears on display Memory Full All memory has Download measurement message been used runs to Casella insight data appears on management software or display clear memory see section 5 6 On power up and during operation dBadge monitors hardware and software operation and will display an error if it finds a problem In the unlikely event this occurs the dBadge will try to save any data if it is in a measurement run Should the error persist after switching the dBadge off then on again contact Casella CEL Casella CEL 35X dBadge Users Handbook Page 35 CASELLA 10 APPENDIX 10 1 Glossary of Terms This Appendix gives a glossary of the acoustic terminology used in this handbook and in the CEL 35X dBadge and Casella insight data management software For further information please contact Casella CEL or your local representative A Weighting A standard weighting of the audible frequencies designed to approximate the response of the human ear to noise Acoustic Calibrator An instrument that provides a reference noise source with a standard level and frequency used to calibrate and check the performance of sound level meters and noise dosimeters ANSI S1 25 1991 The U S Standard for Noise Dosimeters C Weighting A standard weighting of the au
20. ent sound levels in the measured environment LCpeak The peak C weighted sound level LEP d This is the daily personal noise exposure defined by ISO 1999 It is the LAeq normalised to an 8 hour Criterion Time i e a standard day Assuming the noise level for the rest of the 8 hour reference period is quiet the LEP d will be lower than the Leq when the measurement duration is less than 8 hours equal to the Leq for a measurement of 8 hours higher than the Leq for measurements longer than 8 hours For example if a noise measurement was made for 4 hours and the LAeq value was 90dB A the LEP d value would be calculated to be 87dB A as the measurement duration is half the 8 hour Criterion Time and the exchange rate is 3 dB LCeq The C weighted equivalent level is the level that would contain the same amount of noise energy as in the actual noise effectively giving an average level over the measurement period Following the ISO procedures doubling the energy results in a 3dB change in the Lea This is denoted by exchange rate Q 3 Peak The maximum level in dB reached by the sound pressure at any instant during a measurement period With the dBadge Peak is measured with either C Z or A weighting It is the true peak level of Casella CEL 35X dBadge Users Handbook Page 38 CASELLA the pressure wave which should not be confused with the highest sound pressure level termed Lmax Slow Time Weighting A standard time
21. esults in a 3dB change in the Lea This is denoted by exchange rate Q 3 For example if the noise level in a factory was a constant 85dB and the measurement period was 4 hours the LAeq would be 85dB A The calculation of LAeq DOES NOT USE a Threshold as in the calculation of LAVG LAF The A weighted sound level measured with Fast time weighting LAS The A weighted sound level measured with Slow time weighting LASmax The maximum A weighted sound level measured with Slow time weighting Casella CEL 35X dBadge Users Handbook Page 37 CASELLA LAVG This is a parameter used in OSHA measurements It is the average sound level over the measurement period equivalent to Leq Normally the term is used when the exchange rate Q is some value other than 3 such as for measurements used for the OSHA Hearing Conservation Amendment with Q 5 A Threshold value is used during the calculation of LAVG where any levels below the threshold are not included For example assume the threshold level is set to 80dB and the exchange rate is 5dB Q 5 If a one hour measurement was taken in an environment where the noise levels vary between 50 and 70dB the sound level would never exceed the Threshold so the instrument would record no value for the LAVG However if the sound level exceeds the 80dB Threshold for only a few seconds only these seconds will contribute to the LAVG giving a level of around 400B which is much lower than the actual ambi
22. for local workplace noise regulations They can be used by an employer as a visual indicator of an individual s exposure throughout the day and can be switched on or off as per section 5 6 If these pre determined alarm levels are exceeded then the blue LED on the front of the CEL 35X will flash The location of the LED is shown in Figure 24 Red and Blue LED Window Figure 24 The default alarm levels will depend on which display mode is selected either ISO or OSHA mode The default levels are summarised in the following table Casella CEL 35X dBadge Users Handbook Page 27 CASELLA Display Blue LED Blue LED Flashing Blue LED Setup Off Slow Flashing Fast ISO Leq lt 79 9dB A Leq gt 80 amp lt 84 9 Leq gt 85dB A AND dB A OR Lpk lt 134 9dB C OR Lpk gt 137dB C Lpk gt 135 amp 136 9 dB C OSHA Lavg T 80 Lavg T 80 gt 85 Lavg T 80 lt 84 9dB A A gt 85dB A AND OR AND Lpk lt 139 9dB Z Lpk gt 140dB Z Lpk gt 140dB Z For the ISO mode the alarm levels are based upon the EU directive 2003 10 EC OSHA levels are based upon the American Occupational Safety and Health Administration OSHA regulations As an example if the CEL 35X is in ISO mode and the Leq rises above 80dB A then the LED will flash slowly approx once per second If an impulsive noise occurs above 137dB C peak the blue LED will flash quickly approximately
23. gs from Off through to 12 00 in 30 minute steps by pressing the left button to show the value required and then pressing the right button to accept and move on to the next menu item Press and hold in the left button to change through the selections more quickly The run will start and run for the selected fixed duration time chosen in this menu Auto Lock This choice is off by default but allows the user to lock the unit during the run to prevent the display from showing any run information other than the run time and battery condition The lock function can be switched on and off during a run by holding the right button in and pressing the left button three times in succession quickly This allows a supervisor to inspect the run results so far at any time during a typical day s measurement in the field Clear memory setting You can choose to leave any runs in the memory or to delete them manually prior to beginning new measurements with this control This may be needed before starting a series of long runs before being able to download to the computer program When on the clear memory screen the memory can be cleared by first pressing the L key to change the No option on the screen to Yes Then press the R Y key to confirm A second screen will appear requesting confirmation that you wish to delete the memory Use the L key to change the option to Yes and if you wish to delete the memory press R
24. he memory and battery The screens are displayed below in Figure 17 Casella CEL 35X dBadge Users Handbook Page 18 CASELLA gt LAF 112 3 da DUR 07 45 12 gt EN 15krs MEMORY 145urs Figure 17 Casella CEL recommends the dBadge is locked to prevent the wearer from tampering with the unit To do this press and hold the R key whilst pressing the L key 3 times as shown in Figure 18 2 Press 3 times pp 4 1 Press and hold f dBadge CASELLA CEL 35X Figure 18 This will lock the keypad so any random presses of keys will not accidentally effect the measurement The display of the CEL 35X will also change so as not to show any SPL values This removes the temptation to shout into the microphone as it has no visual effect A padlock symbol amp will be shown in the bottom left of the screen to indicate the keypad is locked as shown in Figure 19 gt DURATION SEE Figure 19 To unlock repeat the process shown in Figure 18 Note If Autolock is enabled from configuration menu section 5 6 the dBadge will automatically lock Casella CEL 35X dBadge Users Handbook Page 19 CASELLA If during a measurement run the remaining battery or memory capacity falls below 2 hours the red LED will flash and the warning icon will be shown on the display 5 4 Stopping A Measurement Run If the CEL 35X dBadge is locked first unlock the keypad by holding down the R key whi
25. hods Hearing protection manufacturers will provide data as follows HML values H 31 M 25 L 17 SNR value 28 The SNR value is a single value which represents the attenuation of the hearing protection The Sound Pressure Level SPL at the ear can be calculated as follows A weighted SPL at the ear Lceg SNR For example if the measured Lee from the CEL 352 dBadge Plus was 102dB and using the value for SNR in the example above A weighted SPL at the ear 102 28 74dB A The HML method is a more effective method of calculating the effectiveness of hearing protection because it takes into account the frequency component of the noise This is because the H M and L values is the attenuation of the hearing protection at high medium and low frequencies respectively Casella CEL 35X dBadge Users Handbook Page 41 CASELLA The LC A value displayed on the CEL 352 dBadge Plus see Figure 21 is the Lceq Laeg It is important to know this because using the HML method requires 2 different formulas depending on the Lceq Laeq Value as shown below If Lceq Laeg IS less than or equal to 2 PNR M a X Los Laeg 2 If Lceq Leg is greater than 2 PNR M ED x Lc Laeq 2 Where PNR is the predicted noise level reduction provided by the hearing protection For example if from the CEL 352 dBadge Plus the values were Lceg 102 4dB Laeg 98 6dB Therefore as the Lceq Laeq value is gr
26. ia Casella insight data management software Clock Accuracy better than 1min per month Under Range 1dB below the bottom of the range Casella CEL 35X dBadge Users Handbook Page 32 Indication Overload Indication Peak Overload Value Stabilisation Time Operating Environment Temperature Pressure Humidity 0 5dB Magnetic Fields Storage Environment Temperature Battery Charge Time Dimensions mm in Weight g 02 The CEL 35X IS with the following ATEX I M1 II 1G EEx ia IIC T2 222 C EEx ia I T4 20 C to 40 C 7 2 Microphone Classification CASELLA 140 4dB RMS i e 0 1dB above the top of the range 143 4dB Peak Linear i e 3 1dB above the top of the range 3 seconds after power up 0 C to 40 C 65 108kPa 30 90 non condensing Negligible 10 C to 50 C Internal NiMH 28 hour battery life Less than 90 minutes from discharged 72x47x52 2 8x1 8x2 0 68 2 4 Intrinsically Safe dBadge is labelled FM CSA Class 1 Division 1 Groups A B C and D Temperature classification T2 Specification CEL 252 Type 2 Nominal Open Circuit Sensitivity 250Hz 28dB 3 0dB 30mV Pa Polarization voltage OV Capacitance polarized 250Hz 11 15pF Operating temperature range 0 to 40 C Cartridge thermal noise 25dB A Dimensions IEC 61094 4 Type WS 2 Casella CEL 35X dBadge Users Handbook Page 33 CASELLA 8 SERVICI
27. lst pressing the L key 3 times as shown in Figure 18 To stop the measurement run press and hold the two keys simultaneously for the period of the countdown as shown in Figure 20 gt STOP 3 P STOP 2 STOP Figure 20 The display on the CEL 35X will then show the data from the measurement run that has just been completed as shown in Figure 21 A new measurement run can be started immediately by following the steps described in section 5 3 Ensure enough battery life and memory capacity remains if a consecutive measurement run is to be performed Casella CEL 35X dBadge Users Handbook Page 20 CASELLA 5 5 Reviewing Measurement Run Data As soon as a measurement run has been stopped the dBadge will automatically display results from the completed measurement run The display will automatically cycle as shown in Figure 21 The screen contents will depend upon which display mode is selected ISO or OSHA ISO View OSHA View Battery and EH 311005 EH 1100 memory MEMORY 80hrs MEMORY 80hrs status Instantaneous 13 45 03 14 05 09 SPL and time LAF 112 348 LAS 109 148 Duration of last DURATION DURATION measurement 07 45 12 07 59 32 run Time averaged LAEQ 89 9 LAVG 111 4 Calculated PA2 Hrs OSHA DOSE noise 3 20 VA exposure data Projected noise PROJ DOSE PROJ DOSE 3525 175 3 96 exposure data Hearing LCEQ 94 7 dB LCEQ 94 7 dB protection LC A 4 8dB LC A 4 8dB selection data The last scree
28. n highlighted in red is only available on the CEL 352 dBadge Plus model Figure 21 Casella CEL 35X dBadge Users Handbook Page 21 CASELLA If Pro Mode is enabled screens shown in Figure 22 become viewable The screen contents highlighted in blue will depend upon which display mode is selected ISO or OSHA To enable Pro Mode see section 5 6 ISO View OSHA View Battery and BH 10H B 310 Mat MEMORY 80s MEMORY 80h status Instantaneous D 13 45 03 14 05 09 SPL and time LAF 112 3 aB LAS 109 148 Duration of last DURATION DURATION t measuremen 07 45 12 07 59 32 run Time averaged LAEQ 89 9 and peak data Calculated LCPK 101 4 dB LZPK dB PA Hrs T80 DOSE noise ian exposure data Projected noise pROJ DOSE T80 P DOSE exposure data 3525 0 0 Hearing protection selection data D 780 LAVG dB T 780 TWA dB T80 T90 or T80 T90 screens depending on configuration Figure 22 By pressing the R key when on any of these screens the display will stop cycling for a period of 5 seconds Casella CEL 35X dBadge Users Handbook Page 22 CASELLA On the CEL 352 dBadge Plus The LC A is simply the Lceq minus the Laeq for use in the HML method for the selection of hearing protection For detailed information on how to use these values to calculate the effectiveness of hearing protection please see section 10 3 5 6 Configuration Menu The configur
29. nUEE NR nMER EFE aa 12 TRER 110 1 m t m Renter n ere ere 12 4 2 Linking Chargers Together rrrnnnnnnnnnnnnnvrrrnnnnnnnnnnnnnnnvrrnnnnnnnnnnnrnnnnnnnnn 13 5 GENERAL OPERATION onus nna toan nana prR uUa Hk E innukas kenn ES EHE n karabinieriai 14 5 1 Switching on the dBadg6e eerta eene rtr deer 14 5 2 SUI AION uscite pee Und ex eek amu Kx DOE AEA EO ANM EMEN RN ME 15 5 3 Starting A Measurement Run rrnnnnnnvvnnnnnnnnnnnnnnnnrnnnnnnnnnnnnnnnnnnnnnnnnnne 17 5 4 Stopping A Measurement Run rrnnnnnnnnnnnnnnnnnnnnnnnrnnnnnnnnnnnrnnnnrnnnnnnnnn 20 5 5 Reviewing Measurement Run Data 21 5 6 Configuration ME paa 23 5 7 Display MOUS AE 26 58 Alarm Settings Rt E c 27 6 MOUNTING THE GEL 35X uismdsi eds ERR ENUNNNE n QUEQEAT EA VER qr cEERQUE 29 6 1 CEL 6351 Fin Mounting CIPS ui ean e nian een oen tug pu satte 29 6 2 CEL 6352 Crocodile Clip Mounting Kit ssseesssssseess 30 6 3 CEL 6353 Harness Mounting Kit rnnnnnnnnnnnnnnonnnnnrnnnnnnnnnnnrnnnnnrnnnnnnnnnn 31 6 4 CEL 6354 Hard Hat Mounting Kit usine n eno ette unteren nnne Rune 31 7 TECHNICAL SPECIFICATION 455a scck iaa ICE ERA Tun ERU NpuE na RE ARMAR EN UR RE nnn RCuA 32 y Es eiecit m m 32 7 2 Microphone Specification CEL 252 rrnnnnnnnnnnnnnnnrrnnnnnnnnnnnnnnnrrrnnnenennn 33 8 SERVICING AND WARRANTY ARRANGEMENTS 34 9 IHOUBLESHOOTING sedan 35 JE 2 REE 36 10 1 Glossary Of TENG sansene m UT 36 1
30. ppropriate plug connector supplied for the country of use Figure 3 Note that charger base 193102B 01 is for use with the CEL 35X and the CEL 35X IS The previous version of the charger base 193038B 01 can only be used with the CEL 35X and NOT the CEL 35X IS Casella CEL 35X dBadge Users Handbook Page 10 CASELLA Note that all versions of the dBadge should only be charged in non hazardous areas in the absence of any flammable atmospheres 3 4 The Windshield During use it is essential the dBadge is fitted with the CEL 6356 windshield supplied To calibrate the dBadge it is necessary to remove the windshield to gain access to the microphone To remove the windshield twist the black plastic ring below the foam anti clockwise and lift the windshield to remove Figure 4 Once the CEL 35X dBadge has been calibrated section 5 2 refit the windshield by placing the windshield back into the body of the dBadge and twisting clockwise as shown previously in Figure 4 Casella CEL 35X dBadge Users Handbook Page 11 CASELLA 4 CHARGING THE CEL 35X 4 1 Charging The CEL 35X dBadge uses internal NiMH batteries Ensure the CEL 35X is fully charged prior to use by placing in the charger as shown in Figure 5 Note the CEL 35X will fit into charger units regardless of which mounting clips are attached Figure 5 Ensure the power supply PC18 is connected and the supply is switched on The CEL 35X dBadge will
31. sella insight data management software The CEL 35X also stores other parameters and 2 dose histograms This allows other data to be calculated and displayed on the Casella insight data management software The total mix of parameters either displayed on the CEL 35X or those that can be displayed on the Casella insight data management software are summarised below Run Number LCpeak gt 135 count LASmax Serial Number L Cpeak gt 137 count LASmin Start Date L Cpeak gt 140 count LAlmax Start Time L 1 bu End Time Wat alibration Ti e TWA Calibration Times Duration LAEP d and Dates L Aeq LEX 8h Pa hr Loeg Projected Lex an Pa sec L MEL L Aleq DE tah Larmax dose x d Apeak LAFmin Projected dose L Cpeak HML Casella CEL 35X dBadge Users Handbook Page 40 CASELLA with Q5 threshold 70 90 default 80dB and criterion 70 90 default 90dB in 1dB steps Threshold T80 T90 or T80 T90 displayed on the CEL 35X remainder shown on Casella insight data management software displayed on CEL 352 dBadge Plus model only The dBadge also stores 1 minute values of the following parameters Except dBadge Lite L L Aeq Aavg L L Cpeak Zpeak 10 3 Using the CEL 352 for the Selection of Hearing Protection The CEL 352 dBadge Plus can be used for the selection of hearing protection by 2 different methods These are the Single Number Rating SNR and the High Medium Low HML met
32. t Type s Serial Number s and Firmware Version Number s Customer name and address Contact name and phone number details of any PC and Software involved including Version Number s reason for returning the equipment with a detailed description of the fault and a list of any error messages that may have been displayed The necessary adjustments or repairs will be carried out and the instrument returned as soon as possible After the warranty has expired except on approved accounts service work is undertaken against quotations and all packing and transit costs are charged extra Casella CEL 35X dBadge Users Handbook Page 34 CASELLA 9 TROUBLESHOOTING Symptom Possible Cause Suggested Solution The dBadge will not switch on The dBadge batteries are flat Charge the dBadge unit see section 4 Incorrect time or date is displayed when turning on The time and date has not been set or PC clock is set Connect the dBadge to Casella insight data management software to set the dBadge incorrectly time and date ensuring PC clock is set correctly Cal Error Calibrator is not Switch on calibrator see Message switched on calibrator manual appears when Calibrator is Push calibrator firmly over calibrating incorrectly fitted microphone dBadge dBadge will not enter calibration mode dBadge is not switched on or a measurement is taking place Ensure dBadge is switched on if a measur
33. tails about the Display Mode see section 5 7 Threshold setting This menu is only displayed if the OSHA display mode is selected in the previous step You can select either both the 80 90 just the 80 dB for the HCA or just the 90 dB for the PEL on screen The 80 90 setting gives the maximum number of displayed screens in the instrument but if only the tighter HCA or lower threshold settings are required for simplicity then select the 80 setting only Similarly if the 90 dB upper threshold is set then only the PEL results will be displayed on screen In any of these 3 cases it should still be remembered that whatever the setting chosen here it will only affect the displayed results and that all the data will be stored to calculate every required parameter when downloaded to Insight software and dB35 Casella CEL 35X dBadge Users Handbook Page 24 CASELLA Scroll LCD setting You can choose to allow the display screens to scroll through as described above or you can select to switch off this function and step through the displayed dosimeter screens one by one manually dB Alarms setting You can choose to enable or disable the high intensity blue flashing LED when the measured noise levels exceed the set threshold trigger levels chosen in the Casella insight data management software or dB35 configuration setup For further details see section 5 8 Pre set Mode Run Duration Timers This mode allows a variety of settin
34. the dBadge will not enter calibration mode if a measurement run is taking place lf a run is in progress stop the run according to section 5 4 Casella CEL 35X dBadge Users Handbook Page 15 CASELLA The windshield should be removed prior to calibration refer to section 3 4 Push the CEL 120 2 acoustic calibrator over the microphone as shown in Figure 11 The calibrator should be pushed on without L twisting Figure 11 The CEL 35X dBadge will automatically recognise a 1kHz calibration tone is present and display the screen shown in Figure 12 CALIBRATE X 114 008 f Figure 12 Press the R key to confirm you wish to calibrate the unit it will take a few seconds to calibrate automatically to 114 0dB during which time a progress bar will be displayed as shown in Figure 13 Casella CEL 35X dBadge Users Handbook Page 16 CASELLA CALIBRATING CAL OK 114 0 aB Figure 13 Once the unit has successfully calibrated the Cal OK message will appear In the unlikely event an error message is displayed as shown in Figure 14 please refer to Troubleshooting section CAL ERROR Figure 14 The CEL 35X is ready to take a measurement once the calibrator has been removed NOTE The CEL 120 2 must only be used to calibrate the CEL 35X IS in a non hazardous atmosphere 5 3 Starting A Measurement Run Ensure the windshield is fitted according to section 3 4 The windshield prote
35. weighting applied by the noise measurement instrument SPL The sound pressure level This is the basic physical measure of noise and is normally expressed in dB Threshold A threshold below which sound levels are excluded from calculation OSHA measurements use an 80 dB threshold and call for a hearing conservation program to be implemented when the eight hour TWA exceeds 85 dB 50 dose TWA This is a parameter used in OSHA measurements The time weighted average is the daily personal exposure level calculated from the LAVG and measurement duration Z Weighting Effectively this is a linear or un weighted measurement In the dBadge system it is used for the measurement of peak sound pressure level against the OSHA standard Casella CEL 35X dBadge Users Handbook Page 39 CASELLA 10 2 Measured Parameters ISO LAeq LCpeak LAEP d Pa2Hours Projected dose Q 3 OSHA LAavg Q 5 LZpeak LASmax dose Q 5 TWA Projected dose Q 5 General LAFmax LAFmin LASmin via dB35 LAleq LAlmax LAlmin LApeak Time LAeq LZpeak LCpeak history LAavg Q 5 Stored as 1 minute values except CEL 350L The dBadge Plus additionally provides simultaneous measurements of LCeq and LAeq together with calculated LCeq LAeq used for the selection of hearing protection Regardless of which display mode is selected ISO or OSHA ALL parameters are stored simultaneously and can be viewed via Ca
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