BASIC
OCCUPATIONAL
ENVIRONMENTAL
ADVANCED
SPECIAL
Sound Level Meters
for Noise at Work Measurements
Theoptimus redsoundlevelmetersusetheverylatestdigitaltechnologyandindustrialdesigntogiveyou
theidealinstrumentforOccupationalandIndustrialHygienenoisemeasurements.
Applications
• Occupational&IndustrialHygieneNoise
Evaluations
• NoiseatWorkSurveys&NoiseExposure
Calculations
• HearingProtectorSelectionusingHMLor
OctaveBandMethods
• MachineryNoiseTests
• NoiseOrdinance&CommunityNoise
Assessments
• GeneralNoiseMeasurements
For Occupational Noise and Industrial Hygiene,
measuring the noise exposure of employees
quicklyandreliablyisessential.Theoptimusred
sound level meters are the ideal instrument for
these applications with a clear, high resolution
OLEDcolourscreen,awide120dBmeasurement
span (up to 140dB(A) and 143dBC Peak) and
simultaneous measurement of all available
parameters.
There’s no setup or complicated configuration
needed.Justswitchon,calibrateandpressstart.
It’sthatsimple.
Key Features
• Simpleoperationwithanergonomicdesign
• Simultaneousmeasurementofallworkplace
noiseparameterswithadditionaltwo“virtual”
noisemeters
• VoiceTagaudiorecording
• Latestdigitaltechnologywithahighresolution
colourOLEDdisplayandback-litkeypad
• Measureupto140dB(A)and143dB(C)Peak
withasinglemeasurementrange
• Real-timeOctaveBandFilters
• Verylarge4GBmemorywhichcanstoreover
10,000measurements
• Longbatterylife
VoiceTag audio recording
Before each measurement is made, you can
record a VoiceTag by simply speaking into the
microphone.
You can record notes about the measurement
location, describe what is being measured or
simplystoreinformationthatmaybeusefulata
laterdate.
The ideal instrument for any application
Withtwoadditional“virtual”noisemetersrunning
at the same time, you can meet any noise
regulation,guidelineorstandard.
Whether you need to meet the UK and EU
Regulations, measure to OSHA HC & PEL, MSHA,
ACGIHoranyotherregulation,anoptimus red is
theidealinstrument.
Simple operation with advanced technology
When you are making a noise
lowlight.Thecaseisrobustandcovered
measurement, the instrument you are
withatactilefinishsoitcanbeusedeven
usingshouldnotgetinthewayofgetting
ifyou’rewearinggloves.
reliableandusefulinformation.
Themeasurementdataisdisplayedina
The optimus sound level meters have
clearandsimpleformatalongwithareal-
been designed with ease of use as the
timenoisechartsothatyoucanseehow
most important feature which lets you
thenoisevarieswithtime.
get on with measuring and controlling
All of the functions of the instrument
thenoise.
are measured simultaneously, and with
The instruments use the very latest in
a wide 120dB measurement span you
digital technology and industrial design
don’tneedtoworryaboutchoosingthe
techniques to make everything as clear
rightrange.Anoptimuscanmeasureup
and simple as possible. We’ve used a
to 140dB(A) and 143dB(C) Peak in this
highresolutioncolourOLEDscreenwhich
singlerange.
can be seen in any conditions, and the
Just switch on, calibrate and you are
keypad will illuminate automatically in
readytogo.
The ideal solution for occupational noise
The optimus red sound level meters are the
The custom settings can be used
idealsoundinstrumentsforoccupationalnoise
to choose any other setup or
andindustrialhygienemeasurements,aswell
configurationthatyoumayneed.
as for basic noise surveys, and will give you
Once you’ve chosen the setup
alloftheinformationyouneed,rightatyour
needed it will be stored so each
fingertips.
time you use the meter you will
havetheinformationyouneed.
UK & EU Noise at Work Regulations
For the two “virtual” noise meters,
IfyouareworkingtotheUKControlofNoise
theLAVG,TWA,%DoseandEstimated
atWorkRegulationsortheEUPhysicalAgents
%Dosearedisplayed.
(Noise) Directive, the Leq View gives you the
informationthatyouneed.
Octave Band Filters for Noise
TheLAeqandLCPeakvaluesaremeasuredatthe
Control
sametimewhichallowtheLEP,d(LEX,8h)andthe
Protection
Where precision measurements are needed,
PeakActionLevelstobedetermined.
The CR:162C and CR:161C instruments also
Class/Type 1 instruments are available as
The LCeq-LAeq (C-A) value is also measured
featurereal-timeoctavebandfilterswhichwill
well as the General Purpose Class/Type 2
whichcanbeusedtoselectPPEusingtheHML
measure the noise in 10 different frequency
instruments.
method.LAEisalsomeasuredalongwithLZPeak
bands.
forregulationsthatusethisratherthanLCPeak.
Theoctavebandmeasurementismadeatthe
&
Selecting
Hearing
same time as the other measurements and
OSHA,MSHA & other regulations
If you need to meet regulations such as
OSHA HC & NC, MSHA HC or ACGIH, the two
includes the overall level in each band along
with a time history of the bands across the
measurementperiod.
“virtual”noisemetersintheDoseViewcanbe
If there is a need to record and download
measurements to a PC, data logging is
availablewiththeB&Cversioninstruments.
These units are supplied with the NoiseTools
software and a USB data cable to allow the
quickly configured to provide you with this
Basic noise level measurements
information.
The optimus red instruments can also be
The Quick Setup gives access to a number
usedforbasicnoisemeasurementswherethe
of preset functions including OSHA HC & NC,
Sound Level is required, such as community
OSHAHC&ACGIHandMSHAHC&EC.
Data logging & PC download
andnoiseordinanceenforcementandtesting
offireandemergencyalarms.
measurementinformationtobedownloaded.
NoiseTools Software
For many users, the most challenging part of a noise survey is the
Measurements can be sorted or grouped by any parameter, person,
reportingandanalysisoftheresults,andsohavingasimplewaytoview,
placeorprojectandmeasurementreportscreatedquicklyandeasily.
analyseandprinttheinformationisessential.
NoiseTools is fully compatible with the latest versions of Microsoft
ThenewNoiseToolssoftwarepackage,suppliedwiththeB&Cversions,
Windowsand,aswithallCirrussoftware,updatesareavailablefreeof
givesyouaquickandsimplewaytodownload,analyseandreportyour
chargefromtheCirruswebsite.
noisemeasurementinformation.
NoiseTools is supplied free from any licensing restrictions or limits
allowing you to install the program on as many PC’s as needed at no
Intuitive and simple to use
additionalcost.
The initial summary screen shows you the most commonly used
informationand,throughsimpleicons,givesyouaccesstothedetailed
measurementdata.Youcansimplyprintthesummaryscreentogeta
quickmeasurementreport.
Foradvancedusers,eachandeveryfunctionmeasuredbytheinstrument
is available for review and analysis and the data can be exported for
furtheruse.
VoiceTag audio recordings can be played back for reference and are
automaticallystoredwiththemeasurementdata.
Where Octave Band data is available, this information can be used by
theprogramtocalculatethelevelofprotectionfromarangeofhearing
defendersandearplugs.
Helping you keep you data organised
Overtime,youmayfindthatyouhavealargenumberofmeasurements,
informationandnotes.
Tohelpyoukeepyournoisemeasurementdataorganisedandeasyto
find, NoiseTools allows each measurement to be allocated to people,
placesandprojects.
Instrument Range & Measurement Kits
The optimus red sound level meters can be used for a wide range of
Complete measurement kits are available for the optimus instruments
occupational noise applications and you can choose from 3 simple
whichcontaintheinstrument,anacousticcalibrator,windshield,cables,
optionstogettheinstrumentthatmeetsyourneeds.ChoosefromClass
batteries and accessories. The measurement kits contain all of the
1orClass2performance,DataLoggingwithPCdownloadand1:1Octave
accessoriesneededtocarryoutanoisesurvey.
BandFilters.
AlloftheinstrumentscanmeasureSoundLevelfunctionsplusLmaxand
Lminwithallfrequencyandtimeweightings.
TheAversionsmeasuretheIntegratednoiselevelssuchasLeqandLAE,
C-A,PeakSoundPressureandthevirtualnoisemetersforOSHA/MSHA/
ACGIH.
TheBversionsprovidethesamefunctionsasabovebutwiththeaddition
of Data Logging so that measurements can be downloaded to the
NoiseTools software. The VoiceTag audio recording is available on the
Bversions.
TheCversionsaddReal Time Octave Band Filterstothefunctionsof
theBversionswhichcanbeusedfortheselectionofhearingprotection.
Specificationsandaselectionchartareavailableonthefollowingpage.
Specifications
Applicable Standards
IEC61672-1:2002Class1orClass2GroupX
IEC60651:2001Type1IorType2I
IEC60804:2000Type1orType2
IEC61252:1993PersonalSoundExposureMeters
ANSIS1.4-1983(R2006),ANSIS1.43-1997(R2007)
ANSIS1.25:1991
1:1OctaveBandFilterstoIEC61260&ANSIS1.11-2004(C
variants)
Integrator Quick settings
EU,OSHAHC&OSHANC,OSHAHC&ACGIH
MSHAHC&MSHAEC,Custom1&Custom2
Microphone
Class1InstrumentsMK:224pre-polarized
Class2InstrumentsMK:216pre-polarized
Batteries
4xAAAlkaline
Measurement Functions
CR:162A & CR:161A
Displayed Functions
LXY,LXYMax,LXYMin
LXeq,LCPeak,LZPeak,LCeq-LAeq,LXE
GraphofShortLAeq,LCPeak
Integrators2&3:TWA,Dose%,EstDose%
MeasurementRunTime
Size
283mmx65mmx30mm
Weight
300gms/10oz
CR:162B & CR:161B
Displayed Functions
LXY,LXYMax,LXYMin
LXeq,LCPeak,LZPeak,LCeq-LAeq,LXE
GraphofShortLAeq,LCPeak
MeasurementRunTime
Integrators2&3:TWA,Dose%,EstDose%
Battery life
Typically16hours
Microphone Preamplifier
MV:200ERemovablePreamplifier
External Power
5vviaUSBSocketfromPCorPowerSupply
5v-15vviaMultiIOsocket
Total Measurement Range:
20dBto140dBRMSSingleRange
NoiseFloor:<18dB(A)Class1,<21dB(A)Class2
Stored Functions
LXYMax&TimeHistoryofLXYMax
LAeq,LCeq,LZeq,LCPeak,LZPeak
TimeHistoryofLAeq,LCeq,LZeq,LCPeak,LZPeak
Integrators2&3:LAVG,TWA.%Dose
TimeHistoryofLAVG
Tripod Mount
1/4”Whitworthsocket
Frequency Weightings
RMS&Peak:A,C,&ZMeasuredSimultaneously
FrequencyBands:10OctaveBands(31.5Hzto16kHz,C
Versionsonly)
Connections
USBTypeBtoPC
Multi-pinIOforexternalpower
Time Weightings
Fast,Slow&ImpulseMeasuredSimultaneously
Display
HighresolutionOLEDdisplaywithambientlightsensor&
illuminatedkeypad
Memory
4GBExpandablewithupto10,000measurementsstored(B
&CVersions)
Time History Data Rates (Global settings)
10ms,62.5ms,125ms,250ms,1/2sec,1sec,2sec(User
selectable)
VoiceTag Audio Recording (B & C Versions)
30secondsofaudiorecordingwitheachmeasurement
Integrators
Threesimultaneous“virtual”noisemeters
Integrator1ispresettoQ3forLeqfunctions
Integrators2&3canbeconfiguredwiththefollowing:
Q3,4or5
Threshold:70dBto120dB(1dBsteps)
TimeWeighting:NoneorSlow
CriterionLevel:70dBto120dB(1dBsteps)
CriterionTime:1to12hoursin1hoursteps
Case
Material:HighImpactABS-PCwithsofttouchback&keypad
Environmental
Temperature Operating-10°Cto+50°C
Storage-20°Cto+60°C
Humidity
Upto95%RHNonCondensing
Electromagnetic performance
IEC61672-1:2002&IEC61672-2:2003
ExceptwheremodifiedbyEN61000-6-1:2007&EN610006-1:2007
Language options
English,French,German,Spanishasstandard
Otherlanguageoptionsmaybeavailable
Software Support
NoiseToolsDownload,Configuration&Analysissoftware
suppliedasstandard.
CompatiblewithMicrosoftWindowsXP,Vista&7(32bit&
64bit)
CR:162C & CR:161C
Displayed Functions
LXY,LXYMax,LXYMin
LXeq,LCPeak,LZPeak,LCeq-LAeq,LXE
GraphofShortLAeq,LCPeak
MeasurementRunTime
Integrators2&3:TWA,Dose%,EstDose%
Real-TimeOctaveBandFilters
Stored Functions
LXYMax&TimeHistoryofLXYMax
LAeq,LCeq,LZeq,LCPeak,LZPeak
TimeHistoryofLAeq,LCeq,LZeq,LCPeak,LZPeak
Integrators2&3:LAVG,TWA.%Dose
TimeHistoryofLAVG
OctaveBands:OverallLeq&LeqTimeHistoryforeachband
MeasurementRunTime
Time&DateofMeasurementStart
wherex=A,C,Z;y=F,S,I
OtherfunctionsmaycalculatedbytheNoiseToolssoftware
anddisplayedondownload.
Notes
1.Fordetailsofthedisplayedandstoredparameters,pleaserefertothe
optimusredtechnicalspecificationdatasheet.
Allspecifications,featuresandvaluesaretypicalandaresubjecttochange
withoutnotice.
Instrument Selection
Function
Class1
Class2
SoundLevel
Functions
Leq/Peak
Functions
TWA/Dose
Functions
Data
Logging
VoiceTag
Recording
1:1Octave
BandFilters
Software
Support
Yes
Yes
Yes
Yes
CK:162A
Yes
Yes
Yes
CK:161A
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
CK:161B
Yes
Yes
Yes
Yes
Yes
Yes
Yes
CK:162C
Yes
Yes
Yes
Yes
Yes
Yes
Yes
CK:161C
MeasurementKit
Instrument
CR:162A
CR:161A
Yes
CR:162B
CR:161B
Yes
Yes
CR:162C
CR:161C
Yes
Yes
Standard Accessories
Theoptimussoundlevelmetersaresupplied,asstandard,withthefollowing
accessories:
UserManual
CertificateofCalibration
USBData/PowerCable
Windshield
NoiseToolsSoftwareCD(RequiresBorCVersiontodownloadmeasurements)
AcousticHouse
BridlingtonRoad
Hunmanby
NorthYorkshire
YO140PH
UnitedKingdom
cr16x/01/2010/r1EN
T:08452302434(UK)
+441723891655
F:+441723891742
E:[email protected]
W:www.cirrusresearch.co.uk
CK:162B
Measurement Kits
Theoptimussoundlevelmetersareavailableasacompletemeasurementkit
withthefollowingaccessories:
optimusSoundLevelMeter
CR:514Class2orCR:515Class1AcousticCalibrator
UA:23790mmWindshield
CK:280CarryingCase
UserManual&CertificatesofCalibration
USBData/PowerCable&NoiseToolsSoftwareCD (RequiresBorCVersionto
downloadmeasurements)