Environmental Monitoring Equipment & Supplies • Sales, Rental & Service by Enviro-Equipment — Charlotte, North Carolina USA

  • Clips onto workers to gather personal noise dosage data for OSHA or ISO compliance.
  • Measurement Range: 65-140 dB.
  • 3 and 5 dB exchange rates, time average, C and Z peak levels, calculates % noise dose plus Lavg and TWA.
  • Software included for data download and generating reports and graphs.
  • Field calibrator and annual factory calibration certificate included.
Title Daily Rate Weekly Rate Monthly Rate
Casella CEL 350 3-PACK Noise Dosimeter Kit Rental $102.00 $306.00 $765.00
Casella CEL 350 5-PACK Noise Dosimeter Kit Rental $170.00 $510.00 $1,275.00
Instantaneous SPL LAF LAS
Time Averaged Parameter LAeq LAavg
Peak Value LCpeak LZpeak
Dose Value Pa2Hours,
Projected %
% Dose,
Projected %

The CEL-350 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-350 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.

The CEL-350 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 infrared port to the Casella Insight PC software. This will allow comprehensive analysis of an employee's exposure.

For information about the OSHA hearing conservation action levels, visit the OSHA Dosimeter Settings Webpage.

The CEL-350 is designed to satisfy all current workplace noise protocal methods for the collection of personal noise data.  Careful attention to the requirements of both US and European noise dosimetry methodologies provides for the simultaneous storage of noise levels in such a way that the dose values can be obtained with both the widely used exchange rates (or Q factor) using the 3 and 5 dB doubling rates.


The CEL 350's have pre-programmed settings for ISO and OSHA. The Casella Insight software allows you to change the governing body even after the data has been collected. You can also enter your own custom settings.


96 x 26 pixel graphic LCD display showing main instrument results and status. The following parameters are shown on the screen with data present:


-2 key tactile water and dustproof keys.
-left key On/Off button
-right key Enter/OK button to confirm selections


- Infrared download port in top of CEL-350
- USB Infrared download cable
- 8 hour run downloads in about 6 seconds
- 180 hour full memory takes about 2 minutes to download

Intrinsically Safe Models Available

Intrinsically Safe Casella CEL 350 Models are available to use in hazardous locations where flammable materials may be present.

Items Included:
  • Casella CEL 350 Noise Dosimeters (3 or 5 Pack)
  • 3 Slot Dock Station Charger (1 or 2)
  • Acoustic Calibrator
  • Factory Calibration Certificates
  • Battery Charger
  • Casella Insight Software
  • Infrared Download Cable
  • Hard Carrying Case
  • User Manual
  • Spare Battery (calibrator)

Acoustic accuracy

ANSI S1.25, IEC61252 2002 Personal sound exposure meters

Dynamic range (dB)

65 to 140

Frequency weightings

A for rms values plus Z and C for peak measurements

Time weightings

Slow for Q=5 data plus non for Q=3 data as required for standards

Exchange rate (Q dB)

5 and 3 simultaneously

Threshold level (dB)

Any levels from 70 to 90 in 1 dB steps

Criterion level (dB)

Any level between 70 and 90 in 1 dB steps

Microphone capsule

Removable ½" type 2 device can be calibrated with any standard acoustic calibrator using ½" diameter cavity

Calibration method

Automatic recognition and calibration to user set dB level

Display screen

96 x 26 pixel graphics LCD with 2 line text messages

Alarm warning indicators

Red and blue LED's showing level noise exceedances during run


2 stage hi intensity LED's for memory, battery or noise warnings

User controls

2 push buttons for On/Off and OK/Accept

Weight (oz, g)

< 2.4 oz (68 g)

Size (in, mm)

< 2.8 x 1.7 x 2.0 in (72 x 42 x 52 mm)

Case molding

High impact ABS plastic molding

Battery pack

Two half AAA size NiMH rechargeable cells

Battery life (hr)

28 hours continuous, unit gives expected remaining battery life in hours when switched on by "fuel gauge" display icon

Charging unit

dBadge master charger base with drop in charging via connections on back of dBadge casing

Memory storage (results)

At least 180 hours at 4 profiles every minute with unit showing remaining memory recording time in hours when switched on

Stored profile values

Lavg(Q=5), LZpk, Leq(Q=3), LCpk

Storage interval

Fixed 1 minute for all 4 results simultaneously

Real time clock

Date and time stamp on all calibration data and profile results

Fixing method to worker

Various fixing clips provided for clothing and hard hat mounting

Microphone protection

Lockable foam windscreen to protect microphone

Security features

dBadge can be locked prior to being left on worker to prevent tampering - showing only duration and run in progress on display

Localization of menus

Up to 5 standard languages can be selected for screen prompts, English, Spanish, French, German, Italian

Identification of multiple units

2 line text string can be uploaded from dB35 pc program