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Related Manuals for CASELLA CEL CEL-63 Series
Summary of Contents for CASELLA CEL CEL-63 Series
- Page 1 CEL-63x Environmental & Occupational Noise Meter HB3356-03 User Manual CASELLA MEASUREMENT Regent House, Wolseley Road, Kempston, Bedford, MK42 7JY, U.K. Phone: +44 (0) 1234 844 100 Fax: +44 (0) 1234 841 490 E-mail: info@casellacel.com Web: www.casellameasurement.com...
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Page 2: Table Of Contents
Measurement data sets ....................21 Detailed description ....................24 Microphone and pre-amplifier ..................24 User controls ........................24 Soft keys .......................... 24 Navigation keys ....................... 25 Run/Stop key ........................25 Screen groups ......................... 25 Switch-on ......................... 26 Status ..........................27 Casella CEL... - Page 3 6.10 Time weightings ......................61 6.11 Correction filters ......................61 6.12 Reference direction ......................61 6.13 Reference conditions ...................... 61 6.14 Operating environmental conditions ................61 6.15 Effects of temperature ....................61 6.16 Effects of humidity ......................61 Casella CEL...
- Page 4 Lifetime Warranty Terms and Conditions ............... 69 Repairs ..........................70 User servicing ........................71 Glossary ........................72 Additional information ....................75 10.1 Sound calibrators – Level corrections ................78 10.2 Response characteristics ....................79 10.3 Data and Protocols for Online Mode ................83 Casella CEL...
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Page 5: Introduction
User Manual, it includes „clickable‟ links. The links appear as blue underlined text. You can also click the names of chapters and sections in the bookmark panel, and in the table of contents, to jump to that part of the manual. Casella CEL... -
Page 6: Colour Coding
This manual uses the same colour codes. Refer to section 4.3 “Screen groups” beginning on page 25 for more information. This colour… indicates… Cyan Memory results screens Green Measurement run screens Measurement stop screens Yellow Calibration mode Blue Menu screens Grey USB connection mode Casella CEL... -
Page 7: Safety
The CEL-63x is a precision instrument. Always handle it with care. Do not use the CEL-63x instrument if it has been damaged. Refer to section 8 Servicing and Warranty arrangements on page 69 for instructions to follow if the instrument has been damaged or has developed a fault. Casella CEL... - Page 8 Remove all batteries from the CEL-63x instrument if you will not use the instrument for a long time. Always follow local regulations to dispose of used batteries. CAUTION The CEL-63x instrument is not waterproof. Do not immerse the instrument in water or use it in the rain. Casella CEL...
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Page 9: Features
3. ON/OFF key 4. Display screen 5. Soft keys 6. Navigation keys 7. Run/Stop key Refer to section 4.2 “User controls” on page 24 for a description of the Soft keys, of the Navigation keys, and of the Run/Stop key. Casella CEL... -
Page 10: Quick Reference
How to fit new batteries Before you begin: Read the caution notice about Batteries on page 8. You should check that the batteries have adequate battery life before you begin a measurement. Replacement batteries should be new or fully charged. Casella CEL... -
Page 11: Mains Dc Supply
When the CEL-63x instrument receives power from a mains DC power supply or from a USB port on a PC, the battery condition symbol on the instrument‟s screen always shows a fully charged battery condition, even if the batteries are not fully charged. Casella CEL... -
Page 12: Using The Controls
Press the key when the instrument is in the Stop mode to start the Run. Refer to Measurement stop on page 27 for information about the Stop mode. Press the key during a Run to stop the Run. Casella CEL... -
Page 13: Set The Time And Date
1 kHz reference tone. Depending on the type of calibrator, the reference tone can have a nominal sound pressure level of either 94 dB or 114 dB. Check the information supplied by the calibrator manufacturer to find the exact sound pressure level that the calibrator generates. Casella CEL... - Page 14 Figure 3. Setting the instruments calibration reference level 6. Save and exit to the Measurement screen. 7. Gently fit the calibrator to the instrument‟s microphone and press it into position as shown in Figure 4. Casella CEL...
- Page 15 11. Press and hold the ON/OFF key on the calibrator to switch the calibrator OFF. 12. Remove the calibrator from the instrument‟s microphone, and re-fit the microphone‟s windshield. You have now calibrated the CEL-63x instrument and made it ready for a measurement run. Casella CEL...
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Page 16: Making A Measurement Run
17 explains how to select a fixed measurement view and how to review the functions for the selected measurement view. Figure 6 on page 18 explains how to select a user-defined measurement view and how to review and change the functions that it uses. Casella CEL... - Page 17 CEL-63x Environmental & Occupational Noise Meter Fixed measurement view Figure 5. Set a fixed measurement view Casella CEL...
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Page 18: Measurement Controls
You can choose among three options. Figure 7 explains how to select each of the timed operation modes. NOTE For measurement runs that have a long duration, you should use a mains DC power supply to operate the instrument. Casella CEL... - Page 19 DC power supply so that the measurement runs occur without interruption. This timer mode is especially useful when the instrument is used together with the environmental kit case. This enclosure supports a higher capacity battery for short- to medium-term environmental measurements. Casella CEL...
- Page 20 CEL-63x Environmental & Occupational Noise Meter Figure 7. Measurement controls Casella CEL...
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Page 21: Measurement Data Sets
When you use the CEL-63x instrument in cumulative measurement mode, the start and stop times depend on whether you have selected press, Fixed duration Timers for the instrument. Casella CEL... - Page 22 Cumulative mode a single full set of results is stored at the end of the measurement run. In effect, the original full set of cumulative results is captured at periodic measurement intervals. Figure 9. Repeating cumulative and profile data sets Casella CEL...
- Page 23 10:18; the second period continues to 11:18, and so on. You can also synchronise runs by using the timers, by starting and ending runs on whole time period intervals. This synchronises both the periodic and the profile measurements. Casella CEL...
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Page 24: Detailed Description
Usually, you must press the Soft key on the right to select a function, and you must press the Soft key on the left to exit a screen or cancel a function. Press the Soft key for the option that you need to select that option. Casella CEL... -
Page 25: Navigation Keys
Screen groups Each screen group includes one or more separate screens. Figure 10 shows how the screen groups relate to each other. Click any of the groups shown in Figure 10 to read a description of that group. Casella CEL... -
Page 26: Switch-On
The system tools also allow selection of either 140 dB or 165 dB full-scale modes. On CEL-632 and CEL-633 three different modes (SLM, Online and NNR) may be set. Please refer to Mode Selection (SLM, Online, NNR) on page 57 for descriptions of these modes. (For standard operations use SLM mode). Casella CEL... -
Page 27: Status
Different screen views include the following: Octave screen. Graph screen. Select the View option to toggle between the two screens. Select the Menu option to use the setup screens. Refer to Menu screens page 33 for instructions to use the setup screens. Casella CEL... - Page 28 shows that an overload noise level that exceeds the instrument‟s measurement range has occurred. If this occurs, the measurement values shown will be incorrect, and you may need to consider the validity of any measurements made. Casella CEL...
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Page 29: Calibration Mode
After the calibration process finishes, this screen shows whether the calibration has passed or failed. When the calibration passes, it is saved automatically. Casella CEL... - Page 30 Inspect the microphone and the calibrator‟s cavity for signs of damage. Check that the calibration level is set correctly. If the instrument persists in failing calibration, contact Casella CEL for advice. Press Exit to exit the Calibration mode without saving the new calibration.
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Page 31: Measurement Run Screens
The screen shows the following measurements digitally: The centre frequency of the selected octave, for example 2 kHz. The sound pressure level (dB) of the measurement in the selected octave. The name of the measurement function, for example L Casella CEL... - Page 32 The functions viewed on this screen can be changed. NOTE On CEL-632 and CEL-633 models, audio recording (if selected) will occur together with a separate „event‟ measurement when a marker key is pressed. Refer to Audio Recording on page 40 for details on this feature. Casella CEL...
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Page 33: Menu Screens
The fixed measurement views have functions that are defined to meet national regulations. You cannot change these functions. This screen shows the measurement view that is active, and allows you to select a different measurement view. Casella CEL... - Page 34 ZSmin AImin CImin ZImin Peak sound pressure level Average sound pressure level Avg(Q4) Avg(Q5) with exchange rate Q Other measurements (refer to AF(Tm3) AF(Tm5) Measurement views on page AI(Tm3) AI(Tm5) Statistical functions (L variable Environmental indices LDEN CNEL Casella CEL...
- Page 35 Set how long the backlight remains ON after a key press. Set the brightness level of the backlight. Measurement Control The measurement setup allows you to set the measurement start and stop modes, and to set the measurement capture mode. Casella CEL...
- Page 36 The instrument then performs the run. On completion of the run, the instrument then finds the next enabled timer T2 to T6 and waits for the indicated start day and time. Casella CEL...
- Page 37 Event measurements are taken as well as the measurements above and are set-up independently. Please see Event setup on page 38 for a detailed description. Figure 11 shows three examples of cumulative measurement runs and periodic time histories. Casella CEL...
- Page 38 Parameter Level trigger events can be triggered from a choice of parameters: Zpeak Cpeak Casella CEL...
- Page 39 1 kHz reference tone. This will be in the range 93 dB to 95 dB, or in the range 113 dB to 115 dB. This screen allows you to set the instrument to the same calibration level, to an accuracy ±0.1 dB. Casella CEL...
- Page 40 When a marker key is pressed then audio is stored (as described above) and additional event noise parameters are also stored for the duration the marker key is pressed. This is the same data as for triggered events, see Event setup. Casella CEL...
- Page 41 NOTE Multiple audio files cannot be recorded simultaneously, so the audio recorded for pre- trigger may be shorter than the set time if, for example a marker has been stored just prior to the start of an event. Casella CEL...
- Page 42 2500 2818 2818 3150 3548 2840 4000 5680 3548 4000 4467 4467 5000 5623 5623 6300 7079 5680 8000 11360 7079 8000 8913 8913 10000 11220 11220 12220 14130 11360 16000 22720 14130 16000 17780 17780 20000 22390 Casella CEL...
- Page 43 CEL-63x instrument‟s memory. IMPORTANT Note that the functions displayed on the View results screens are those that you define in the current measurement setup. You can use the View results screens to review any measurement function. Casella CEL...
- Page 44 Select this Printer icon to display the Print Report options for the current run and to print the report, or follow the instructions in “Print Screens” on page 45 to print some screens. Print Report Select the Printer icon to display the Print Report Options screen. Casella CEL...
- Page 45 Press the Run/Stop key when you want to print the current screen. This printing format is particularly useful when displaying octave or 1/3-octave results when the graphical bar graph of the spectrum can be printed for any of the selected narrow band functions. Casella CEL...
- Page 46 NOTE If it is required to print Chinese reports then the printer must be loaded with the GB2132 Chinese character set. Contact the printer supplier or Casella CEL for details. Adding your own Logo to print reports It is possible to add your own logo to personalise reports. These can be any size up to 127 dots wide ×...
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Page 47: Usb Connect Mode
J:. IMPORTANT The CEL-63x instrument stores measurements as binary files. You must use the optional insight software, supplied by Casella CEL, to read these files. CAUTION Always use the Safely Remove Hardware icon in the Notification Area of the PC‟s taskbar to disconnect the CEL-63x. -
Page 48: Measurement Views
Free field A free-field microphone response is generally necessary to conform to regulations throughout the European Union. A free-field response is where sound propagates directly from a source to a microphone without any form of obstruction. Casella CEL... - Page 49 Z-weighted measurements. This allows you to transfer measurements to a PC for post- processing to A or C weighting using the Casella „insight‟ software. Refer to “Mini B USB port” on page 55 for information about connecting the instrument to a PC. Casella CEL...
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Page 50: Measurement Functions
Slow measurements are identified by using the subscript „S‟, for example L Measurement functions You can select up to nine measurement functions for each user-defined measurement view. The bottom of the screen has a counter to show how many functions you have selected, for example “7/9”. Casella CEL... - Page 51 Sound Pressure Levels (SPLs) and Equivalent Continuous Sound Pressure Levels (L 2. The second screen shows Maximum and Minimum SPLs. 3. The third screen shows Peaks, averages (L s) and other functions. 4. The fourth screen shows Statistical Values (L Casella CEL...
- Page 52 The functions highlighted in green are the other functions that are selected for display during a measurement run. The L subscript identifies the frequency weighting used when calculating the function, for example L is the C-weighted L Casella CEL...
- Page 53 L functions are Taktmaximal A-weighted fast or impulse measurements. Taktmaximal measurements are specified in German noise standards (the DIN standard). They integrate noise over a 3 second or a 5 second Casella CEL...
- Page 54 For example, the measurement L is the level exceeded for 10 % of the measurement time and L is the level exceeded for 90 % of the measurement time. The CEL-63x instrument also provides a user-defined, variable statistical measurement. Casella CEL...
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Page 55: Connections
When you connect the instrument to a PC, the instrument appears as a removable disk drive in Windows Explorer. The Casella insight data management software is available from Casella CEL. You must use this program to download measurements directly from the instrument without using Windows Explorer. -
Page 56: Ac And Dc Output Port
Contact Casella CEL for more information about the insight program. AC and DC output port The AC and DC output port is a 2.5 mm stereo jack. It has two functions: The tip connection (1) provides an AC output from the instrument. -
Page 57: Mode Selection (Slm, Online, Nnr)
This is designed to simplify noisy neighbour applications. While NRR mode is selected then the following settings are forced on. 1. External events are enabled 2. Event audio capture for events is enabled using the currently selected high or low quality Casella CEL... - Page 58 Note: if memory is low or an NRR run is delayed using the start/stop timers or the NRR run is not the first run in a sequence of runs then the voice notes option is skipped. Voice notes can however always be added after the run is completed. Casella CEL...
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Page 59: Specifications
„X‟ instruments. Performance of Class 1 or 2 as relevant to the instrument model. IEC 60651: 1979, IEC 60804: 2000, ANSI S1.4 1983, ANSI S1.43-1997(R2007) 1/1 Octave and 1/3 Octave Filters comply with EN61260: 1996, Class 0 and ANSI S1.11 1986, Order-3 Type 0C. Casella CEL... -
Page 60: Measurement Range
Electrical noise floor <17.5 dB (A). 6.9 Frequency response 6 Hz to 20 kHz (lower and upper 3 dB frequencies). Digital sampling rate 67.2 kHz. Overall Class 1 and Class 2 frequency response compliant with IEC 61672-1: 2002 Casella CEL... -
Page 61: Time Weightings
Less than ±0.5 dB over the range 25 % to 90 % RH (non-condensing) relative to the value under reference conditions. 6.17 Storage environmental conditions Humidity 0 % to 90 % RH non-condensing Temperature –20 °C to +60 °C Pressure 65 kPa to 108 kPa Casella CEL... -
Page 62: Microphones
Auto-calibrated to a user-specified reference level with recording of date, time and offset. 6.20 Power supply External DC Optional -PC18 12 V DC universal power supply adaptor available from Casella CEL. Supply voltage 12 V DC Supply current 170 mA continuous rating 2.1 mm power connector Batteries Three AA alkaline or rechargeable cells. -
Page 63: Electromagnetic Compatibility
2.5 mm stereo jack (barrel ground, tip AC output) provided for remote monitoring or recording, PC WAV file recording or headphone applications. Approximately 0.4 Vrms full-scale output corresponding to 96 dB. Output impedance is approximately 2.2 kΩ. Load Casella CEL... -
Page 64: Available Data Sets
The Environmental indices LDN, LDEN, CNEL In periodic mode the following set of results is produced for each of the period intervals during a run. In cumulative mode the following single set of results is produced covering the whole run. Casella CEL... - Page 65 The time for each of the 18 maximum and minimum sound pressure levels is stored to 1 second resolution Peak sound pressure level Peak times The time for each of the three peak levels is stored to 1 second resolution Casella CEL...
- Page 66 The Casella insight data management software allows calculations for L and L C) Profile Results For each profile interval the following results are produced: Broadband L AIeq AFmax ASmax AImax CPEAK Profile start time Overload and battery fail flags Casella CEL...
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Page 67: Physical
24 hours under control of the delay or timers. 6.30 Physical Dimensions 71.5 mm wide 230.0 mm high 31.0 mm deep (Dimensions include microphone and removable pre- amplifier CEL-495) Weight 0.332 kg with batteries 0.254 kg without batteries Casella CEL... -
Page 68: Care And Maintenance
Remove the batteries from the instrument if it will not be used for a long period of time (more than one month). Do not allow the instrument to become wet, or to be exposed to extreme levels of dust, heat or cold. Casella CEL... -
Page 69: Servicing And Warranty Arrangements
The warranty applies to free of charge repair of the product by Casella CEL. Casella CEL at its discretion may elect to agree with the owner a value for part exchange of the product in case the parts and labour cost of the repair exceeds the economic value of the product. -
Page 70: Repairs
Regular calibration: in order to continue the warranty past the original 2 years the product must be returned to Casella CEL or an authorised service centre on a yearly basis for calibration. Failure to do this will invalidate the lifetime warranty. -
Page 71: User Servicing
DO NOT open the instrument to attempt repairs. You will cancel the warranty if you attempt to open the instrument for any reason. If you suspect the instrument has developed a fault, contact your local Casella CEL agent to arrange for service and repair. Casella CEL... -
Page 72: Glossary
CEL-63x Environmental & Occupational Noise Meter 9 Glossary The following list defines some of the acoustic terms that you can find in this User Manual. For additional information, contact Casella CEL or your local agent. Acoustic calibrator An instrument that provides a reference noise source with a standard level and frequency. - Page 73 OSHA measurements and is equivalent level to L Normally this 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. Casella CEL...
- Page 74 Slow measurements are identified by using the subscript „S‟. The sound pressure level. This is the basic physical measure of noise and is normally expressed in dB. Threshold The sound pressure level below which sound measurements are excluded from the calculation. Casella CEL...
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Page 75: Additional Information
Bruel & Kjear 4226 Bruel & Kjear UA0033 calibrator electrostatic actuator 31.5 -0.1 -0.1 -0.1 -0.1 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 -0.2 1000 2000 4000 8000 12500 16000 Casella CEL... - Page 76 Note that the CEL-252 microphone has a typical thermal noise level of 20 dB(A). When using the CEL-252 microphone, the combined typical and maximum noise levels will be 3 dB to 4 dB higher than the values shown in the table above. Casella CEL...
- Page 77 The typical time taken for the CEL-63x instrument to stabilise after sudden changes in the environmental conditions is as follows: 5 minutes after a 10 °C change in temperature 5 minutes after a 30 % change in humidity (non-condensing) 15 seconds after a 5 kPa change in ambient pressure Casella CEL...
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Page 78: Sound Calibrators - Level Corrections
Calibration corrections for the CEL-251 and CEL-252 microphones Calibration Level Calibration Level Correction no Wind Correction with Calibrator Screen Wind Screen IEC 60942 Casella CEL-110/1 -0.1dB 0.0dB Type 1 Casella CEL-110/2 -0.1dB 0.0dB Type 2 Bruel & Kjear 4231 -0.1dB 0.0dB... -
Page 79: Response Characteristics
“Calibrating the instrument” on page 13 for instructions to set the calibration level and calibrate the instrument. 10.2 Response characteristics Table 7. Casella CEL-63X with CEL-251 Microphone Free Field response with and without Wind Screen 0 Degree 0 Degree Expanded... - Page 80 15000 14962.33 -0.1 -1.3 -1.4 0.59 16000 15848.90 -0.1 -1.4 -1.5 0.60 17000 16788.00 -1.7 -1.7 0.60 18000 17782.76 -1.9 -1.9 0.60 19000 18836.45 -2.0 -2.0 0.60 20000 19952.58 -2.1 -2.1 0.60 1. Corrections below 250Hz are 0.0dB Casella CEL...
- Page 81 Maximum expanded uncertainty of above data with 95% probability (k=2) 500 Hz to 1 kHz 0.3 dB >1 kHz to 4 kHz 0.5 dB >4 kHz to 8 kHz 1.0 dB >8 kHz to 12.5 kHz 1.5 dB Casella CEL...
- Page 82 Maximum expanded uncertainty of above data with 95% probability (k=2) 500 Hz to 1 kHz 0.3 dB >1 kHz to 4 kHz 0.5 dB >4 kHz to 8 kHz 1.0 dB >8 kHz to 12.5 kHz 1.5 dB Casella CEL...
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Page 83: Data And Protocols For Online Mode
CEL-63x is switched on it will automatically start a run and try to output the results to RS232 (providing a USB host is NOT connected). If the Casella CEL-63x RS232 cable (part no: 196138B) is not connected or the receive has paused output using handshaking then the Online mode will buffer the results until the cable is connected and handshaking has stopped pausing the output. - Page 84 None. Removing the cable will also pause the RS232 output. The CEL-63x Rs232 interface has 32 byte buffers so when the handshaking pauses the output then up to 32 further bytes can be transmitting before the pause actually occurs. Casella CEL...
- Page 85 (where nn.n is the user selected Ln percentile). CF90 CF95 CFnn.n If Ln‟s are not output then 6 functions are output in a single line e.g. <PRF>,2010-06- 02,23:19:45,L ,60.3,L ,61.9,L ,69.2,L ,68.4,L AIeq AFmax ASmax AImax 70.2,L ,103.2 Cpeak Casella CEL...
- Page 86 The Instantaneous SPL function (eg LAF) is never output. In Normal online mode. NOTE All Broadband Period function values are in dBs and all functions except LC-Aeq in the range 0.0 dB to 199.9dB and LC-Aeq has a range -5.0 to 199.9dB. Casella CEL...
- Page 87 The Comma Delimited ASCII data format can be directly input into a standard terminal emulation program (e.g. Microsoft HyperTerminal) and can be saved as a standard text file which can be exported to most spread sheets e.g. excel. Casella CEL...
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