Casella CEL-350 dBadge User manual

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REDUCE RISK. PREVENT LOSS. SAVE LIVES.
Casella Noise Dosimeter Model CEL –350 Instructions
PAGE 1
**IMPORTANT - Retrieve the data from the dosimeters prior to returning to Travelers Laboratory**
Initial Equipment Checks
Visually inspect all equipment upon receipt.
For best results, charge the dosimeters overnight prior to use. The status indicator on the dosimeter will flash red
when the unit is charging and is solid blue when the charging is complete. “BATTERY FAIL” on the display indicates
that charging is required before the dosimeter can be used.
Additional assistance is available by:
Viewing the Casella Noise Dosimeter Model CEL-350 Instructional Video at: Travelers - Instructional Videos
Calling the Instrument Laboratory at [phone] (Eastern time zone 7:00 am to 5:00 pm)
Dosimeter Calibration (calibrate immediately prior to sampling)
Turn the dosimeter on by pressing the LEFT button.
Remove the windscreen by carefully turning the black plastic ring at the base of
the windscreen counter clockwise. Do not twist the foam windscreen –it will
tear.
Turn the calibrator on with the red button. Ensure that the calibrator is
emitting a tone before proceeding to the next step.
Insert the calibrator onto the microphone so that o-ring in the calibrator forms a
seal with the dosimeter microphone and the dosimeter screen is still visible.
The display will indicate “CALIBRATE? 114”, press the RIGHT button on the
dosimeter to confirm calibration. “CALIBRATING” with an indicator across the
bottom of the screen will appear on the display.
When completed, the display will read “CAL OK” for a few seconds. Press the
RIGHT button until the current sound level data (LAS) is displayed (about 114
dB). Record this data as your PRE sampling calibration verification and remove
the calibrator from the microphone.
Carefully replace the windscreen onto the dosimeter microphone by gently turning the black plastic ring clockwise.
Do not twist the foam windscreen –it will tear.
Repeat calibration for the remainder of dosimeters. The calibrator will turn off automatically.
Collecting Noise Samples
To begin data collection, press the LEFT and RIGHT buttons simultaneously until the display counts down “start 3, 2,
1”. Release the buttons when the battery/memory indicators and the recording indicator “►” appear on the display.
Optionally, the dosimeter can be placed in secure mode by holding the RIGHT button and pressing the LEFT button
three times. The locked icon ( ) will be visible in lower left corner of the display.
Attach the dosimeter to the clothing of the employee at the shoulder, near the employee’s ear using the clips.
When sampling is done, remove dosimeter from the employee. If it was previously placed in secure mode, remove it
from secure mode by holding the RIGHT button and pressing the LEFT button three times. The locked icon ( ) will
disappear, the recording indicator “►” will still be displayed.

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Casella Noise Dosimeter Model CEL –350 Instructions
PAGE 2
To stop data collection, press the LEFT and RIGHT buttons simultaneously until the display counts down “stop 3, 2,
1”. Release the two buttons when the battery/memory indicators appear on the display. The recording indicator “►”
will disappear.
Perform a post sampling calibration verification by removing the windscreen and placing an active calibrator on
microphone. When the display indicates “CALIBRATE? 114”, press the LEFT button. With the calibrator still on the
unit, press the RIGHT button until the current sound level data (LAS) is displayed. Record this data as your post
sampling calibration verification.
Retrieve the test data from the dosimeter(s) and record the items (*) below on your data sheet. Press the RIGHT
button repeatedly to scroll through the results as follows:
LAS current sound level measurement (used for calibration verifications)
* DURATION time monitored in hours:minutes:seconds
LZPK Not used
* T80 DOSE noise dose for the test period using the 80 dBA threshold (units are %)
* T80 P DOSE projected noise dose for an 8-hour exposure using the 80 dBA threshold (units are %)
* T80 LAVG projected average noise level for an 8-hour dose using the 80 dBA threshold (in dBA)
T80 TWA Not used
* T90 DOSE noise dose for the test period using the 90 dBA threshold (units are %)
* T90 P DOSE projected noise dose for an 8-hour exposure using the 90 dBA threshold (units are %)
* T90 LAVG projected average noise level for an 8-hour dose using the 90 dBA threshold (in dBA)
T90 TWA Not used
Turn off the dosimeter by pressing and holding the LEFT button - the display will show “switch off 3, 2, 1”. Release
the button when the display disappears.
Travelers Industrial Hygiene Laboratory, 90 Lamberton Road, Windsor, CT 06095 1-800-842-0355 www.travelerslab.com

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Casella Noise Dosimeter Model CEL –350 Instructions
travelers.com
The Travelers Indemnity Company and its property casualty affiliates. One Tower Square, Hartford, CT 06183
The information provided in this document is intended for use as a guideline and is not intended as, nor does it constitute, legal or professional advice. Travelers does not
warrant that adherence to, or compliance with, any recommendations, best practices, checklists, or guidelines will result in a particular outcome. In no event will Travelers,
or any of its subsidiaries or affiliates, be liable in tort or in contract to anyone who has access to or uses this information for any purpose. Travelers does not warrant that the
information in this document constitutes a complete and finite list of each and every item or procedure related to the topics or issues referenced herein. Furthermore,
federal, state, provincial, municipal or local laws, regulations, standards or codes, as is applicable, may change from time to time and the user should always refer to the
most current requirements. This material does not amend, or otherwise affect, the provisions or coverages of any insurance policy or bond issued by Travelers, nor is it a
representation that coverage does or does not exist for any particular claim or loss under any such policy or bond. Coverage depends on the facts and circumstances
involved in the claim or loss, all applicable policy or bond provisions, and any applicable law.
© 2017 The Travelers Indemnity Company. All rights reserved. Travelers and the Travelers Umbrella logo are registered trademarks of The Travelers Indemnity Company
in the U.S. and other countries. A0717 New 5-17 PAGE 3
INDUSTRIAL HYGIENE SURVEY DATA –NOISE DOSIMETRY
SAVE THIS DATA SHEET AND EMAIL A COPY TO Tate Berkan at [e-mail]
Survey Date:
Company Name:
Name:
Street Address:
Email Address:
City, State, Zip Code
Dosimeter #:
123456789
Employee Name:
John Smith
Job Task:
Line 1 Operator
Comments:
Typical Operation
Calibration (dB)
Duration
80 dBA Threshold
90 dBA Threshold
PRE
POST
(hours:mins:secs)
T80 Dose %
T80 P Dose %
T80 LAVG
T90 Dose %
T90 P Dose %
T90 LAVG
114
114.1
7:30:15
48.0
57.1
86.0
17.2
20.5
78.6
Dosimeter #:
Employee Name:
Job Task:
Comments:
Calibration (dB)
Duration
80 dBA Threshold
90 dBA Threshold
PRE
POST
(hours:mins:secs)
T80 Dose %
T80 P Dose %
T80 LAVG
T90 Dose %
T90 P Dose %
T90 LAVG
Dosimeter #:
Employee Name:
Job Task:
Comments:
Calibration (dB)
Duration
80 dBA Threshold
90 dBA Threshold
PRE
POST
(hours:mins:secs)
T80 Dose %
T80 P Dose %
T80 LAVG
T90 Dose %
T90 P Dose %
T90 LAVG
Dosimeter #:
Employee Name:
Job Task:
Comments:
Calibration (dB)
Duration
80 dBA Threshold
90 dBA Threshold
PRE
POST
(hours:mins:secs)
T80 Dose %
T80 P Dose %
T80 LAVG
T90 Dose %
T90 P Dose %
T90 LAVG
Dosimeter #:
Employee Name:
Job Task:
Comments:
Calibration (dB)
Duration
80 dBA Threshold
90 dBA Threshold
PRE
POST
(hours:mins:secs)
T80 Dose %
T80 P Dose %
T80 LAVG
T90 Dose %
T90 P Dose %
T90 LAVG
Dosimeter #:
Employee Name:
Job Task:
Comments:
Calibration (dB)
Duration
80 dBA Threshold
90 dBA Threshold
PRE
POST
(hours:mins:secs)
T80 Dose %
T80 P Dose %
T80 LAVG
T90 Dose %
T90 P Dose %
T90 LAVG
Dosimeter #:
Employee Name:
Job Task:
Comments:
Calibration (dB)
Duration
80 dBA Threshold
90 dBA Threshold
PRE
POST
(hours:mins:secs)
T80 Dose %
T80 P Dose %
T80 LAVG
T90 Dose %
T90 P Dose %
T90 LAVG
Threshold
LAVG
P Dose
OSHA Action Level (Requires Hearing Conservation Program)
80 dB
85 dBA
50%
OSHA Criterion Level (Mandatory Controls/Hearing Protection)
90 dB
90 dBA
100%
dBA:
Decibels, A-weighted, slow response.
PRE:
Pre-sampling calibration verification - Sound level (LAS), in dBA.
POST:
Post-sampling calibration verification - Sound level (LAS), in dBA.
Threshold:
Decibel level at which the dosimeter begins accumulating data. Noise levels below the threshold are ignored by the dosimeter.