Noise Dosimeter Accessories

CEL-110-2 Single Level (114 dB at 1 kHz) Class 2 Acoustic Calibrator with CEL-4726 Adaptor by Casella

The CEL-110 units are compact and ergonomically designed with simplicity and ease of use being the main priority. A simple keypad is provided for logical control of the unit’s functions. Two versions are available fulfilling the accuracy requirements of ANSI and IEC in the new Class 1 and Class 2 categories.

A feedback microphone incorporated into the design ensures a stable tone for precise setting up of sound level meters and noise dosimeters. The standard display provides clear and concise status information at all times.

Key Benefits

• Complies with ANSI S1.40 – 1984 (R1997) and IEC 60942: 2003
• Class 1 & 2 units available
• Frequency of 1 kHz
• Single 114 dB and dual 114 & 94 dB level outputs (depending on model)
• LCD display for user feedback
• Simple keypad operation
• Automatic power off to conserve battery life
• ½” and ¼” calibration facility with included coupler
• Powered from a single 9V radio battery
• Lightweight and compact
• 25% smaller and 20% lighter than previous calibrators

Applications

Recent changes to the third edition of the international standard for acoustic calibrators under the publication IEC 60942: 2003 have tightened the performance requirements for these devices. The new CEL-110 has been designed to comply with these new standards to ensure accurate calibration over a wide range of temperature, humidity and pressure conditions, typical of fieldwork.

A high quality microphone and feedback loop maintains the selected acoustic pressure in the cavity at the required level by compensating for any changes. The innovative display gives the user status on the level, frequency and battery condition of the device. The units detect when the microphone is removed from the calibrator and switch off the tone thereby extending useful battery life for up to 3 years.

CEL-120-2 Single Level (114 dB at 1 kHz) Class 2 Acoustic Calibrator by Casella

The CEL-120 calibrators are compact and ergonomically designed with simplicity and ease of use being the main priority. A simple 2 button keypad is provided for logical control of the unit’s functions. Two versions are available fulfilling the accuracy requirements of ANSI and IEC in the Class 1 and Class 2 categories.

A feedback microphone incorporated into the design ensures a stable tone for precise setting up of sound level meters and noise dosimeters. The included display LED’s give clear and concise status information at all times.

Key Benefits

• Complies with ANSI S1.40 – 2006 and IEC 60942:2003
• Class 1 & 2 units available
• Single frequency of 1 kHz
• Single 114 dB and dual 114 & 94 dB level outputs(depending on model)
• LED display showing status and selected level
• 2 push button operation
• Automatic power off to conserve battery life
• ½” cavity as standard (¼” calibration facility with optional reducing coupler)
• Powered from 2 x AAA batteries
• Lightweight and compact

Applications

Recent changes to the third edition of the international standard for acoustic calibrators under the publication IEC 60942:2003 have tightened the performance requirements for these devices. The new CEL-120 Acoustic Calibrators have been designed to comply with these new standards to ensure accurate calibration over a wide range of temperature, humidity and pressure conditions, typical of fieldwork.

A high quality silicon microphone and feedback loop maintains the selected acoustic pressure in the cavity at the required level by compensating for any changes. The innovative indication LED gives the user status on the selected level, and battery condition of the device. Both units will detect when the microphone is removed from the calibrator and switch off the tone thereby extending useful battery life for up to 2 years.

Casella 1/2" to 1/4" Microphone Coupler for CEL-110 and 120 Acoustic Calibrators

Casella Pack of 5 Foam Windscreen for 1/4" CEL-320/360, 281 Microphone

Casella Carry Case for CEL-420/460, 320/360, 422/462, 424/464 320S/360S (Single Unit)

Casella Carry Case for CEL-420/460 & 320/360 (2 to 10 Units)

Casella Stalk Microphone Assembly for CEL-400 and 300 Dosimeters

Casella Cable mic. for 420/460 & 320/360 or to Adapt 424/464 & 320S/360S

CEL-6760-K1 Mini Environmental Kit Case for Logging Dosimeters with Battery Pack and Charger by Casella

The CEL-6760 case is used to protect the CEL-360 & 460 Logging Noise Dosimeters when used for short to medium term monitoring in exposed locations. The system is powered from a rechargeable battery that can provide up to 6 days continuous operation. Larger capacity batteries may be used to extend this logging time if required. The logging capability of the CEL-360 & 460 enables a low cost environmental logger to be realized with regular data being saved to memory for later analysis using standard CEL-6704 (dB12) Windows compatible software programs.

The CEL-360 & 460 Dosimeter can be programmed from a PC using either CEL dB10 or dB12 Windows Analysis software. A measurement run can be selected which will store the overall results for the whole of the run. In addition short time interval profiles can be set to enable the time history to be viewed when the data are downloaded to a PC. These profiles can be the time average level, Leq or the maximum or minimum level for intervals of under 1 minute. For intervals of 1 minute or above the CEL-360 & 460 will save statistical parameters such as the LN10%, LN90% as well as the Leq. Any valid combination of up to 10 parameters may be chosen in a CEL-360 to suit the particular measurement requirement (up to 2 in a CEL-460).

List of standard parts

Assembly

Carefully screw it to the brass connector on the top of the case taking care not to cross the threads. If not already fitted, place the microphone adaptor in the end of the tube and drop the plug of the microphone cable down the tube so that the cable drops into the top of the case. Feed the microphone cable through the cutout in the foam so that it appears in the top of the space for the body of the CEL-360 or 460 dosimeter. Plug the microphone cable into the top of the dosimeter and switch the CEL-360 or 460 ON. Any excess cable can be looped carefully and positioned in the cutout for the windshield to stop it getting tangled.

Calibrating the system

Making a measurement

Fixing the MEC to a suitable surface

Retrieving results at the end of a run

In either dB10 or dB12 choose the menu item Instrument|Download from CEL-360 or 460 and follow the on-screen prompts to transfer the results to the PC. A filename must be entered into the Target File in the Download Dialog box together with a valid path for the destination file. It is recommended that downloaded runs be saved in the \DATA directory of the associated program, for example C:\db12\data\filename.dta.

Data can either be viewed in the CEL dB10 software package in the form of lists of text. The preferred dB12 software package allows the user to view the time history profiles on screen in graphical format and has twin cursors to allow further recalculations to be made on user selected sections of the run. In addition the time history profiles can be exported to a Lotus 1-2-3 compatible format file that can then be imported into a standard Windows spreadsheet program such as Microsoft Excel or Lotus 1-2-3.

Casella Pack of 3 Foam Windscreens for Sound Level Meters with Quarter Inch Microphones

CEL-4672 Foam Windscreen for 1/4” Mics (CEL-231, 254, 269, 328, 440.X2, 480.X2, 450.X2, 490.X2) by Casella

Measurement microphones on sound level meters must be protected from the effects of wind blowing across the diaphragm.

The CEL foam windscreens are specifically designed to minimize any interference caused by air turbulence around the microphone capsule. Always use the correct size foam windscreen to suit the diameter of the microphone.

Technical Information

Casella RS232 Cable 9 Pin (for CEL-420/320, 460/360 Dosi's, 424/320S, 464/360S SLM) (6ft)

Casella Parallel Printer Adapter (Requires C6671 Cable for CEL-320/360, 420/460, C6724 Cable for 440/480, 450/490) (6ft)

Casella IS Stalk Microphone Assembly for CEL-400 and 300 Dosimeters

Casella IS Cable Mic. for 420/460 & 320/360 or to Adapt 424/464 & 320S/360S

CEL-6702 dB10 PC Software (CEL-420/460 & 320/360 Dosis & 424/464 & 320S/360S SLM) by Casella

The CEL-6702 software is designed to be used in conjunction with the CEL-320 and 360 range of noise dosimeters and sound level meters. It allows a dosimeter to be setup and results downloaded at the end of a measurement run. CEL-6702 is provided with all CEL-320 models.

Key Features

• Windows 95, 98, 2000 compatible
• provides download capability of the results at the end of a run
• shows the noise results as text screens
• time history profile noise level data can be exported to an external spreadsheet package such as MS Excel
• load user defined setups to the instruments for special measurements
• set delay start and stop timers to control up to 16 separate runs
• save customised reports in RTF format for import into word processors such as MS Word
• configure the attached dosimeter to prevent unauthorized tampering by wearer
• disable unwanted noise measurement parameters to simplify recording of data

The dB10 software version 2.0 is used to provide a download capability for the CEL-320 dosimeters and CEL-320S sound level meters following completion of measurement Runs.

Simply connect the instrument to the selected serial comm. port and choose from a list of up to 50 stored Runs. Runs can be downloaded one at a time or in groups and saved in a datafile directory for further inspection and manipulation.

The overall Run data can be viewed in a standard report format that allows the user to inspect the noise exposure measurements quickly and easily.

When the measurements have been made with a CEL-320 Noise dosimeter downloaded results are clearly presented to the user.

A built in word processor is provided as standard to allow for the simple preparation of report ready documents containing all the necessary results.

The software also allows the dosimeters to be configured from the computer. A setup file can be sent to the instrument to carry out measurements according to user specified methodologies.

Up to 13 user setups are available to transmit to an instrument together with the seven factory default setups.

CEL-6704 dB12 PC Software (CEL-420/460 & 320/360 Dosis & 424/464 & 320S/360S SLM) by Casella

The CEL-6704 software is designed to be used in conjunction with the CEL-320 and 360 range of noise dosimeters and sound level meters. It provides additional graphing capabilities over and above the standard CEL-6702 (dB10) software that is provided with the CEL-320 model.

Key Features

• Windows 95, 98, 2000 compatible
• provides download capability of the results at the end of a run
• shows the noise results as graphs or text screens
• time history profile noise level data can be exported to an external spreadsheet package such as MS Excel
• recalculate time average levels defined by cursors
• calculate any percentile values from histogram data
• load user defined setups to the instruments for special measurements
• set delay start and stop timers to control up to 16 separate runs
• change Y axis scale and alter the colour scheme to suit preferences
• save customised reports in RTF format for import into word processors such as MS Word

The dB12 software version 2.0 is used to provide a download capability for the CEL-320 and 360 dosimeter family following completion of measurement Runs.

Simply connect the dosimeter to the serial comm. port of a standard computer running MS Windows and choose from a list of up to 50 stored Runs. Runs can be downloaded one at a time or in groups and saved in a datafile directory for further inspection and manipulation.

The overall Run data can be viewed in a standard report format that allows the user to inspect the noise exposure measurements quickly and easily.

When the measurements have been made with a CEL-360 Logging dosimeter up to ten profiles may be recorded and inspected to see the time history of the varying levels.

A built in word processor is provided to allow for the simple preparation of report ready documents containing all the necessary graphics and text.

The software also allows the dosimeters to be configured from the computer. A setup file can be sent to the instrument to carry out measurements according to user specified methodologies.

Up to 13 user setups are available to transmit to an instrument together with the seven factory default setups.

CEL-252 1/2" General Purpose Electret Microphone Free Field Incidence by Casella

The CEL-252 microphone is the best choice for use in ANSI and IEC61672 Class 2 Sound Level Meters and other noise measurements requiring Class 2 (or general purpose) accuracy. It is a 1/2" prepolarized free-field measurement microphone designed for high quality and reasonable cost for noise meters that can accept standard screw on microphones.

Key Benefits

• Pre polarized design does not require 200Vdc supply bias voltage
• Frequency range 20 Hz to 12.5 kHz ± 2 dB
• Free-field response
• Rugged design for long trouble free operating life
• Standard WS2 thread size for interchangeability with many popular measurement instruments
• Measurements up to 140 dB
• Low noise floor for quiet background measurements

Applications

Production quality control for the CEL-252 uses sophisticated techniques to ensure that the frequency response tolerances allowed by ANSI/IEC61672 Class 2 devices are still met. The figure shows the typical free-field frequency response curve of the CEL-252 family of microphones. This ensures that the sound level meter or measurement system that is connected to the microphone will remain inside the allowed tolerances for general-purpose Class 2 noise meters.

The stability and versatility of every CEL-252 microphone capsule has been proven in many fields of acoustic measurements. The capsule uses the international standard thread 60 UNS which ensures compatibility with a wide range of microphone preamplifiers and noise instruments such as the CEL-400 series of noise analyzers. The CEL-252 is fitted to the CEL-430.A2 model as the standard microphone when it is ordered as part of a standard kit.

CEL-6351 Standard Mounting Clip for dBadge Pack of 5 Sets by Casella

• Provided as standard with every dBadge
• Supplied as a pair
• Can be purchased separately as replacements in pack of 5 pairs
• Simple screw fit into back of dBadge casing

CEL-6352 Alligator Mounting Clip for dBadge Pack of 5 Sets by Casella

• Provided as option for dBadge
• Can be purchased separately as replacements in packs of 5 pairs
• Simple screw fit into back of dBadge casing

CEL-6353 Harness Mounting Clip for dBadge Pack of 5 Sets by Casella

• Provided as option for dBadge
• Supplied as a pair
• Can be purchased separately as replacements in packs of 5 pairs
• Use with D8147 harness accessory to attach dBadge to wearer
• Simple screw fit into back of dBadge casing

CEL-6354 Hard Hat Mounting Clip for dBadge Pack of 1 Set by Casella

• Use to attach dBadge to a standard hard hat slot
• Useful for construction industry workers or anywhere where hard hats are mandated
• Can be purchased separately as replacements in packs of 2 sets
• Simple screw fit into back of dBadge casing

CEL-6355 Kit Case for up to 12 dBadge Micro Dosimeters and Standard Accessories by Casella

• Accepts up to 12 dBadges
• Custom foam layout provides space for dosimeters and key accessories
• Lockable kit case to keep instruments secure
• Space for up to 4 chargers
• Space for calibrator and power supply

CEL-6356 Replacement Windscreens for dBadge Pack of 5 Windscreens by Casella

• Provided as standard with every dBadge
• Clips on and off very easily to allow calibration using CEL-110/2 acoustic calibrator
• Available as replacement in packs of 5
• Reduces effect of wind noise over the microphone
• Protects microphone from ingress of dust and dirt

CEL-6362 3 Way Master Charger Unit for All IS and Non-IS dBadges Including PC18 Power Supply by Casella

• High speed charger unit
• Accepts up to 3 separate dBadges
• Uses CEL-PC18 universal power supply (included)
• Charges up to 3 dBadges in under 1.5 hours from completely flat
• Charges dBadge in about 30 minutes for a full 8 hour run
• dBadge can be left on charger indefinitely

CEL-PC18 Universal Power Supply and Charger Unit 110/240 VAC to 12 VDC with Worldwide Adaptors by Casella

• Provided with worldwide plug adapters to suit any country
• Transforms mains down to stabilized 12 V dc output to power master charger and up to 5 slave chargers
• Provided as standard with CEL-6350 master charger

CEL-6363 3 Way Slave Charger Unit for All IS and Non-IS dBadges Including C6359/0.2 Link Cable by Casella

• For multiple kits beyond 3 dBadges
• Add one slave charger for up to 3 additional badges
• Links to master charger with C6359/0.2 link cable (included)
• Link up to a maximum of 3 extra slave chargers to main master charger for total of 12 dosimeters per kit

Casella 3 Way Master IS and Non-IS Charger Unit Base Unit Only (Less Cable and Power Supply)

C6359-0-2 Link Cable From Master Charger to Slave Charger for dBadge System (8in) by Casella

• Supplied with every CEL-6358 slave charger unit
• Used to link multiple slave units to the master 3 way charger
• 8 in (200 mm) long
• can be purchased as a spare or replacement

Insight-D Insight Plug-in for CEL-35X Series Micro Noise Dosimeters by Casella

The CEL-35X Plugin for Casella Insight allows the run data from dBadge dosimeters to be transferred to the database for archiving and reporting. All the results from the dBadges can be viewed and printed as required to suit national requirements or for customized output for specific purposes.

Personal noise data can be linked with sound level meter results to produce a comprehensive report that documents noise exposure by site, location or by person.

Key Features

• Configure the dBadges display prior to runs
• Download all run results to the database for archiving and hard copy output
• Export specific sets of data to external programs for use in other software
• Use “exclusion zones” in the graphing routines to eliminate unwanted parts of the recording
• Maintain the calibration information with reminders for due dates
• Customize the output reports to suit any legislation

Applications

193200B Infra Red Interface Adaptor with Integral High Speed USB Connector by Casella

Recently introduced as a new accessory for various Casella and CEL instruments the 193200B High speed USB infra red interface allows easy downloads to a computer. The specially designed adaptor combines the benefits of a standard serial infra red interface, such as the Casella CMC39, with the ease and speed of a USB device without the need to have a separate USB to RS232 adaptor such as the CEL-90336. The 193200B adaptor will work with both desktop and laptop computers fitted with the popular USB interface connections.

Key Benefits

• High speed reliable data transfer from suitably equipped device to computer
• No need to install separate USB drivers into operating system
• All necessary drivers are installed along with the main software package
• No need to struggle with the correct communication port selection on the computer
• Use with CEL-350 dBadge dosimeters
• Use with the Apex personal air sampling pumps
• Visual indication in window shows IR adaptor is communicating successfully

The 193200B adaptor can be used in conjunction with the CEL-350 and CEL-350IS micro noise dosimeters to upload configurations and download stored run data to the computer. It can also be used to configure, upgrade and download information from the Casella Apex personal air sampling pumps. All necessary driver software is included in the latest versions of the dB35 and Pump Manager software programs.

Casella Harness with Belt and Shoulder Strap for Apex Pump or dBadge Noise Sampler

Casella Upgrade a CEL-350 Lite dBadge to a CEL-350 dBadge to add data logging

Casella Upgrade CEL-350 Lite dBadge to a CEL-352 Plus dBadge, adds data logging and LCeq & L(C-A)

CEL-6357 dB35 PC Software for Micro Dosimeters Supplied on CD Rom by Casella

The CEL-6357 software is the matching package for the CEL-350 dBadge dosimeter. The CEL-350 stores all noise exposure results with both Q=5 and Q=3 dose histograms for later investigation and reporting however the user requires. The CEL-6357 software allows run data to be downloaded via an infrared interface adapter then reviewed on screen.

Measurement runs are stored in a database structure that allows great flexibility in viewing and manipulation to suit specific national regulations and user requirements. The database can be setup to include information on the wearer, the site, the work area and the job process as well as the actual dosimeter itself.

Key Features

• Software package for the CEL-350 Micro dosimeter
• Compatible with MS Windows XP, NT and 2000
• Downloads run data from noise dosimeter
• High speed download <6sec per 8 hour run
• SQL database structure for maximum flexibility
• Calculates all the popular noise dose indices
• Time history profiling of 4 results at fixed 1 m intervals
• Allows advanced filtering of results based on noise exposure levels
• Displays simultaneously 3 dB and 5 dB exchange rates
• Export key run data to other programs such as spreadsheets for specific manipulation and calculation

The downloaded runs are first transferred to a main database that holds the measurements before they are “allocated” to the right worker who wore the dBadge. The database structure allows the creation of Company folders, factory sites, locations in those sites and then various processes and finally people. This allows an extremely comprehensive model of companies large and small to be developed to allocate the downloaded runs to in order to represent the overall structure. Folders are ideal for consultants to hold separate run data for different clients.

Selecting a run from the download list allows the time history profile to be viewed with any selection of 1 to all 4 noise parameters saved at 1-minute intervals. Hover the mouse over a point on the chart and see the numerical values appear in a popup box. User entered notes can be applied to any selected data point in the chart to highlight the noise level corresponding to a particular process. The time history data can be viewed as the profile chart or as a table showing the minute-by-minute run values and notes. The chart and the table can be quickly exported to a spreadsheet to perform specific data reduction or to add to a custom report document in a word processor.

Extensive customization is available for reviewing the overall run data from the dBadge measurements. Two default views are available called OSHA and ISO with the key noise parameters already selected to show in the CEL-350 Cumulative Run window on screen. A third Custom view is also provided where any or all of the noise parameters can be selected from the list of over 60 headings held for every run. The sort order can be changed to alter the way the list is displayed in columns and the criterion and threshold levels can be changed at will once measurements are in the database structure. Displayed parameters can include calibration results, TWA, noise dose and peak noise levels as well as the maximum and minimum if required.

A color-coding system is provided where the dB35 software will highlight any runs that are held in the database according to the various action levels set by the user. An early warning level at 80 dB TWA can be set plus the 85 and 90 dB TWA for the OSHA PEL and HCA requirements. The peak limit is also selectable to highlight any results with significant impulsive content. The colors and the actual limits are independently selectable for the OSHA, ISO and Custom default views. Once colors have been set and selected by the user all runs in the database will be coded on screen in the CEL-350 Cumulative Run window instantly showing which measurements require further investigation.

The database of downloaded runs can be output with the help of a comprehensive Report Wizard that guides the user through setting up the print order for multiple personnel, the required fields to be included, the chart details, a specified date range and user defined headings and company logo images. Once these options have been selected a report can be previewed and printed quickly. Output is possible in both portrait and landscape format depending on the requirements of the user and the type of data to be printed. For example a time history profile chart may be better in landscape format while a regular report can be printed in portrait mode. Once formatted the report can be exported as a file in many different styles and file extensions to suit the user’s needs. Flexibility is the key and the dB35 software is able to provide all that a user needs to produce good quality workplace noise exposure measurement reports.

CMC39 Infra Red Interface and Cable to 9 Way RS232 by Casella

• Used to download stored data from the dBadges to the dB35 pc software
• Supplied with necessary driver software
• Supplied with connector to suit 9 way RS232 port
• Automatic recognition and download from dBadge

Casella USB to RS232 Interface Adaptor for Computers without a Standard RS232 9 Way Serial Port

CEL-302-2 1/4" Pre Polarized Precision Measurement Microphone Free Field with 1/2" Adaptor by Casella

The CEL-302 1/4” measuring microphone capsule is designed for specialized acoustical measurements such as high noise levels exceeding the usual 140 dB limit of traditional ½” microphones.

The microphone capsule is used as an accessory transducer for the CEL-553, 573 & 593 - series of noise meters and real time analyzers.

The extended frequency response and high upper limit make the CEL-302 suitable for the investigation of impulsive signals.

Key Benefits

• industry standard 0.25 inch size
• free field response
• 3.5 mV/Pa sensitivity
• -49 dB re 1 V/Pa
• frequency response from 5Hz-60kHz
• measurement of high sound levels up to 165 dB rms. with CEL-500 real time analyzers
• requires 200 Vdc power supply
• each microphone capsule is supplied with an individual frequency response calibration chart and preamplifier adaptor
• nickel diaphragm
• side vented design

Applications

It features a free field frequency response to satisfy the requirements of IEC and other international sound level meter standards.

The microphone requires a 200 Vdc polarization supply and can therefore be used with any sound level meter or measurement system that provides such a bias voltage.

The capsule is supplied with an A67 ¼” to ½” adaptor to allow it to be fitted on the end of standard 1/2 inch instrument preamplifiers.

The lower microphone sensitivity of nominally 3.5 mV/Pa enables the sound level meter to measure sound levels up to a maximum of 165 dB rms (168 dB peak).

This makes it suitable for high level monitoring of transient phenomenon such as gunfire or other very impulsive sources where the peak level may reach up to 170 dB.