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Sound Level Meter for Environmental and Occupational Noise Measurement

Sound Level Meter for Environmental and Occupational Noise Measurement from Cirrus

Product Code:Optimus® Green


Need more Info? (514) 354-2511 - 1-800-463-4363

Applications
Environmental Noise Measurements
  • Environmental noise impact assessments over short or long periods
  • Environmental noise monitoring outdoors with remote data download over 3G/GPRS & GPS location
  • Boundary noise measurements & impact assessments
  • Measurements to BS 4142, ISO 1996, Section 61 Notices
  • Tonal analysis using to ISO 1996-2:2007 & Cirrus Improved Method
  • Detailed analysis using audio recording Occupational Noise Measurements
  • Occupational & Industrial Hygiene Noise Evaluations
  • Hearing Protector Selection using HML or 1:1 Octave Band Methods
  • Workplace noise measurements to ISO9612 Simple Noise Measurements
  • Noise Ordinance & Community Noise Assessments
  • General Noise Measurements
Occupational Noise Measurements
  • Occupational & Industrial Hygiene Noise Evaluations
  • Hearing Protector Selection using HML or 1:1 Octave Band Methods
  • Workplace noise measurements to ISO9612
Simple Noise Measurements
  • Noise Ordinance & Community Noise Assessments
  • General Noise Measurements

 

Key Features
  • Simple operation ensures that you get the functions you need quickly & easily
  • Simultaneous measurement & data logging of all available parameters
  • Simultaneous A, C & Z Frequency Weightings
  • Simultaneous F, S & I Time Weightings
  • Real-time 1:1 & 1:3 Octave Band Filters
  • NR & NC values & curves on screen*
  • Tonal noise analysis*
  • Up to 28 statistical Ln % values*
  • Single 120dB measurement range
  • Acoustic Fingerprint™ audio triggering, recording & alerts during measurements for replay and analysis
  • VoiceTag™ audio note recording
  • AuditStore™ measurement verification
  • Repeating measurements with manual or automatic control
  • Pause & Back Erase functions
  • High resolution colour OLED display and backlit keypad for night-time measurements
  • 4GB memory capable of storing over 10,000 measurements (expandable up to 32GB)
  • Compatible with CK:670 & CK:680 outdoor noise measurement kits
  • Measure up to 170dB with the optional MV:200EH microphone system

 

Measure everything. Forget nothing.
The Sound Level Meter for Environmental and Occupational Noise Measurement from Cirrus optimus green have been designed with ease of use as the most important feature which lets you get on with measuring and controlling the noise. The instruments use the very latest in digital technology and industrial design techniques to make everything as clear and simple as possible. All of the functions of the instrument are measured at the same time so there’s no risk of choosing the wrong setting, and with a wide 120dB measurement span you don’t need to worry about choosing the right range.

Featuring a high resolution colour OLED screen and a keypad which will illuminate automatically in low light, the optimus instruments are ideal for any noise application. The measurement data is displayed in a clear and simple format along with a real-time noise chart so that you can see how the noise varies with time.

A standard optimus can measure up to 140dB(A) and 143dB(C) Peak with the standard microphone and preamplifier, and up to 170dB using the optional MV:200EH High Level Noise microphone system.

 

The ideal solution for environmental & occupational noise
The optimus green sound level meters are ideal instruments for both environmental & occupational noise and will give you all of the information you need, right at your finger tips. Every measurement contains all of the available functions so there’s no risk of selecting the wrong parameter or function.
Environmental Noise Measurements
For environmental noise applications, an optimus green is the ideal instrument.
Comprehensive measurement capability
The overall Leq, Lmax and statistical Ln% values are measured along with a range of noise profiles providing a complete picture of the noise under investigation.
Real-time 1:3 Octave Bands
The B & C variants will measure and store Real-Time 1:3 octave bands from 6.3Hz to 20kHz throughout each and every measurement, with the overall value along with a time history stored automatically.
Acoustic Fingerprint triggers and audio recording
As well as the VoiceTag recording, the optimus green instruments provide audio recording during measurements using the Acoustic Fingerprint technology.

Recordings can be started either manually or automatically when user defined triggers are activated.

Audio recordings can be stored either as Studio 96/32 quality which can be used for later analysis, or as Standard 16/16 quality which can be used for replay and source identification.
Tonal noise detection
The D variants use either the ISO 1996-2:2007 Simplified Method or the Cirrus improved method to highlight tonal noise in 1:3 octave bands.
Repeating measurements
Measurements can be either started manually or automatically by the measurement control functions.

This allows the instruments to make repeated measurements over long periods of time, ideal when the instrument is used with an outdoor noise measurement kit.
Occupational Noise & Industrial Hygiene Measurements
As well as the environmental noise functions, the optimus green instruments also provide a complete range of occupational noise functions.
UK & EU Noise at Work Regulations
If you are working to the UK Control of Noise at Work Regulations or the EU Physical Agents (Noise) Directive, LAeq and LCPeak values are measured at the same time which allow the LEP,d (LEX,8h) and the Peak Action Levels to be
determined. The exposure calculator also displays a projected LEP,d (LEX,8h) for the current measurement.

The LCeq-LAeq (C-A) value is also measured which can be used to select PPE using the HML method.
OSHA, MSHA & other regulations
If you need to meet regulations such as OSHA HC & NC, MSHA HC or ACGIH, the two “virtual” noise meters in the Dose View can be quickly configured to provide you with this information.
Octave Band Filters for Noise Control & Selecting Hearing Protection
The optimus green A, B & C variants also feature real-time 1:1 octave band filters which can be used to aid in the selection of PPE and for noise control applications.

NR & NC curves & values are shown on screen after a measurement.

 

NoiseTools Software
The NoiseTools software package gives you a quick and simple way to download, analyse and report your noise measurement information.

The initial summary screen shows you the most commonly used information and, through simple icons, gives you access to the detailed measurement data. For advanced users, each and every function measured by the instrument is available for review and analysis and the data can be exported for further use.

VoiceTag audio recordings can be played back for reference and are automatically stored with the measurement data, and audio recordings can be replayed and analysed in 1:12 Octave Bands.

To help you keep your noise measurement data organised and easy to find, NoiseTools allows each measurement to be allocated to people, places and projects.

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 additional cost.

Sound Level Meter for Environmental and Occupational Noise Measurement

 

AuditStore data verification
AuditStore™ is a new technology that helps you to ensure that your noise measurement data is valid and trustworthy. AuditStore allows the user to verify measurements that have been downloaded to the NoiseTools software against a secure data store within the instrument.

Each time you make a measurement with your optimus, a selection of the overall data is stored into a separate, secure memory that is independent of the main memory card.

This data contains essential information about the measurement such as the time, date and duration, the LAeq, Peak(C) and LAFmax, LA10 & LA90 (where available) and the overload indication.

In addition to the noise measurement data, information about the last calibration is also stored.

The AuditStore data can be downloaded from the instrument when required and then the measurements can be checked against the AuditStore.

The NoiseTools software will check that the measurement information held in the main database and displayed on the screen matches the values within the AuditStore secure memory.

NoiseTools will display verification symbols if the information matches, a unique feature which will be useful in any legal proceedings.

 

Standard measurement kits
Complete measurement kits are available for the optimus instruments which contain the sound level meter, an acoustic calibrator, windshield, cables, batteries and accessories. The measurement kits contain all of the accessories needed to carry out a noise survey.

Details of the measurement kits are shown on the back of this datasheet.

 

Specifications
Applicable Standards IEC 61672-1:2002 Class 1 or Class 2 Group X
IEC 60651:2001 Type 1 I or Type 2 I
IEC 60804:2000 Type 1 or Type 2
IEC 61252:1993 Personal Sound Exposure Meters
ANSI S1.4 -1983 (R2006), ANSI S1.43 - 1997 (R2007)
ANSI S1.25:1991
1:1 & 1:3 Octave Band Filters to IEC 61260 & ANSI
S1.11-2004
Microphone Class 1 Instruments MK:224 pre-polarized
Class 2 Instruments MK:216 pre-polarized
Microphone Preamplifier MV:200 Removable Preamplifier
Total Measurement Range: 20dB to 140dB RMS Single Range
Noise Floor: <18dB(A) Class 1, <21dB(A) Class 2
Frequency Weightings

RMS & Peak : A, C, & Z Measured Simultaneously
1:1 Octave Bands:

31.5Hz to 16kHz

1:3 Octave Bands:

6.3Hz to 20kHz (Bands from 12.5Hz displayed,
6.3Hz, 8Hz & 10Hz stored & downloaded) - B & C variants
Additional Metrics:
LAeq LF (20Hz to 200Hz) & Leq LF (20Hz to 200Hz)

Time Weightings Fast, Slow & Impulse Measured Simultaneously
Display High resolution OLED display.
Ambient light sensor & illuminated keypad
Memory 4GB (32GB factory fit option)
AuditStore Measurement verification data stored in secure memory
Time History Data Rates (Global settings) 10ms, 62.5ms, 125ms, 250ms, 1/2 sec, 1 sec, 2 sec /(User selectable)
VoiceTag Audio Recording Up to 30 seconds of audio notes with each measurement
Acoustic Fingerprint Audio Recording Off, Manual, Threshold Triggered, Advanced Trigger
User options:
  • Studio Quality - 96kHz/32bit WAV format
  • Standard quality - 16kHz/16bit WAV format
  • Pre-Trigger function
Integrators Three simultaneous “virtual” noise meters. Integrator 1 is preset to Q3 for Leq functions. Integrators 2 & 3 can be configured with the following:
  • Exchange Rate: 3, 4 or 5 dB
  • Threshold: 70dB to 120dB (1 dB steps)
  • Time Weighting:None or Slow
  • Criterion Level: 70dB to 120dB (1 dB steps)
  • Criterion Time: 1 to 12 hours in 1 hour steps
Integrator Quick settings EU, OSHA HC & OSHA NC, OSHA HC & ACGIH,
MSHA HC & MSHA EC, Custom 1 & Custom 2
Ln Statistical Values
  • 14 independent statistical Ln values calculated from 1/16th LAF
  • 7 preset to L1.0, L5.0, L10.0, L50.0, L90.0, L95.0 & L99.0
  • 7 user defined Ln values
  • CR:172C & CR:171C allow for an additional 14
  • Ln values with independent time and frequency weighting.
Measurement Control
  • Measurement control with user selectable duration of manual, 1 min, 5 min, 10 min, 15 min, 30 mins, 1 hour, Lden
  • Automatic Synchronisation & Repeat
  • Pause
  • Back Erase with user selectable duration
Dimensions
  • Size: 283mm x 65mm x 30mm
  • Weight: 300gms/10oz
Batteries 4 x AA Alkaline
Battery life
  • Typically 12 hours with Alkaline AA
  • Typically 20 hours with Lithium AA Non-Rechargeable
  • Battery life is dependent upon the battery type and quality & screen brightness
Connections
  • USB Type B to PC
  • AC & DC Output via ZL:174 (2 x Phono, 1m)
  • Multi-pin IO for external power via ZL:171 cable (2.1mm socket)
  • External Power: 5v-15v via MultiIO socket via ZL:171 cable (2.1mm socket)
Tripod Mount 1/4” Whitworth socket
Case Material: High Impact ABS-PC with soft touch back & keypad
Environmental
  • Temperature:
    • Operating -10°C to +50°C,
    • Storage -20°C to +60°C
  • Humidity:
    • Up to 95% RH Non Condensing
Electromagnetic performance IEC 61672-1:2002 & IEC 61672-2:2003
Except where modified by EN 61000-6-1:2007 & EN 61000-6-1:2007
Language options English, French, German, Spanish as standard
Other language options may be available
Software Support NoiseTools Download, Configuration & Analysis software supplied as standard. Compatible with Microsoft Windows XP, Vista, 7 & 8 (32bit & 64bit)
Measurement Functions1 CR:1720 & CR:1710
LXY, LXYMax, LXYMin
LXeq, LCPeak, LZPeak, LAPeak LCeq-LAeq, LXE, LAIeq
Graph of Short LAeq, LCPeak
Measurement Run Time
Integrators 2 & 3: TWA, Dose %, Est Dose %
14 Statistical Ln% Values
Stored Functions
LXYMax & Time History of LXYMax
LAeq, LCeq, LZeq, LCPeak, LZPeak, LAPeak, LAIeq
Time History of LAeq, LCeq, LZeq, LCPeak, LZPeak, LAPeak, LAIeq
Integrators 2 & 3: LAVG , TWA. % Dose
Time History of LAVG
Ln Values: 14 independent statistical values
Audio recording during measurement
Time, date & duration of measurement
CR:172A & CR:171A
LXY, LXYMax, LXYMin
LXeq, LCPeak, LZPeak, LAPeak LCeq-LAeq, LXE, LAIeq
Graph of Short LAeq, LCPeak
Measurement Run Time
Integrators 2 & 3: TWA, Dose %, Est Dose %
Real-Time 1:1 Octave Bands (Graphical & Numeric)
NR & NC values & curves
14 Statistical Ln% Values
Stored Functions
LXYMax & Time History of LXYMax
LAeq, LCeq, LZeq, LCPeak, LZPeak, LAPeak, LAIeq
Time History of LAeq, LCeq, LZeq, LCPeak, LZPeak, LAPeak, LAIeq
Integrators 2 & 3: LAVG , TWA. % Dose
Time History of LAVG
1:1 Octave Bands: Overall Leq & Leq Time History for each band, NR & NC values & curves
Ln Values: 14 independent statistical values
Audio recording during measurement
Time, date & duration of measurement
CR:172B & CR:171B
LXY, LXYMax, LXYMin
LXeq, LCPeak, LZPeak, LAPeak LCeq-LAeq, LXE, LAIeq
Graph of Short LAeq, LCPeak
Measurement Run Time
Integrators 2 & 3: TWA, Dose %, Est Dose %
Real-Time 1:1 Octave Bands (Graphical & Numeric)
Real-Time 1:3 Octave Bands (Graphical & Numeric)
NR & NC values & curves
Leq LF (20Hz to 200Hz)
14 Statistical Ln% Values
Stored Functions
LXYMax & Time History of LXYMax
LAeq, LCeq, LZeq, LCPeak, LZPeak, LAPeak, LAIeq
Time History of LAeq, LCeq, LZeq, LCPeak, LZPeak, LAPeak, LAIeq
Integrators 2 & 3: LAVG, TWA. % Dose
Time History of LAVG
1:1 & 1:3 Octave Bands: Overall Leq & Leq Time History for each band
NR & NC values & curves
Ln Values: 14 independent statistical values
Audio recording during measurement
Time, date & duration of measurement
CR:172C & CR:171C
LXY, LXYMax, LXYMin
LXeq, LCPeak, LZPeak, LAPeak LCeq-LAeq, LXE, LAIeq
Graph of Short LAeq, LCPeak
Measurement Run Time
Integrators 2 & 3: TWA, Dose %, Est Dose %
Real-Time 1:1 Octave Bands (Graphical & Numeric)
Real-Time 1:3 Octave Bands (Graphical & Numeric)
Tonal Noise Detection in 1:3 Octave Bands
NR & NC values & curves
Leq LF (20Hz to 200Hz)
Up to 28 Statistical Ln% Values
Stored Functions
LXYMax & Time History of LXYMax
LAeq, LCeq, LZeq, LCPeak, LZPeak, LAPeak, LAIeq
Time History of LAeq, LCeq, LZeq, LCPeak, LZPeak, LAPeak, LAIeq
Integrators 2 & 3: LAVG, TWA. % Dose
Time History of LAVG
1:1 & 1:3 Octave Bands: Overall Leq & Leq Time History for each band
Tonal Noise Detection in 1:3 Octave Bands
NR & NC values & curves
Ln Values: 28 independent statistical values
Audio recording during measurement
Time, date & duration of measurement
where x=A ,C ,Z; y= F, S, I
Other functions may be calculated by the NoiseTools software and displayed on download.
Notes
1. For details of the displayed and stored parameters, please refer to the optimus user manual.

All specifications, features and values are typical and are subject to change without notice

 

Function/
Instrument
CR:1720 CR:1710 CR:172A CR:171A CR:172B CR:171B CR:172C CR:171C
Class 1        
Class 2        
Type
Approval
  PTB,LNE
Applus+
  PTB,LNE
Applus+
  PTB,LNE
Applus+
  PTB
Sound Level
Functions
Leq/Peak
Functions
TWA/Dose
Functions
Data Logging
Pause &
Back Erase
AuditStore
Acoustic
Fingerprint
Audio
Recording
VoiceTag Note
Recording
1:1 Octave
Band Filters
   
1:3 Octave
Band Filters
       
NR & NC Curves
on screen
   
Tonal Noise
Detection
           
Ln values
Software Support
3G/GPRS Modem
& GPS Support
Measurement Kit CK:1720 CK:1710 CK:172A CK:171A CK:172B CK:171B CK:172C CK:171C

 

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