Cirrus The Optimus+ Green – an environmental sound level meter designed to help organisations reduce their impact on noise pollution
Brand :
Cirrus Research
Categories :
Sound Level Meter
- Includes everything you need to measure environmental noise
- Measures the full range of sound and environmental noise parameters simultaneously to save time
- No complicated setup - just switch on, calibrate and start
- Large colour display so you can easily read data on the go
- Lightweight & ergonomic measuring instrument, ensuring ease of use
- Class 1 & Class 2 to IEC 61672-1:2013 & IEC 61672-1:2002
- Type Approved variant available, to IEC 61672-1:2013 (Class 1 Instruments)
- Type Approved variant available, to IEC 61672-1:2002 (Class 1 Instruments)
The top-of-the-range Optimus+ Green has been specifically designed as an environmental noise meter and is perfect for measuring and monitoring exposure to noise pollution and environmental noise sources, including construction sites, windfarms and industrial operations.
Available as either a Class 2 or Class 1 sound level meter, built to IEC 61672, the Optimus+ Green environmental noise meter provides everything you need to measure both occupational and environmental noise, to the fullest extent. Capturing the full range of sound parameters simultaneously, there’s no other noise measuring instrument you need to measure and monitor exposure to environmental noise.
All Optimus+ Green environmental noise meters are integrating data logging instruments, providing noise data such as sound pressure level (SPL), Leq and Peak and TWA/Dose. Optional measurement parameters include 1:1 and/or 1:3 octave band filters, tonal noise detection, Ln values, and on-screen NR/NC curves.
Built to UK, EU and international standards, the Optimus+ Green environmental noise meter can be used anywhere in the world and is compatible with our range of outdoor measuring kits, making it the comprehensive solution to your environmental noise monitoring needs.
Specifications
Comprehensive measurement capability
The overall Leq, Lmax and statistical Ln% values are measured along with a range of sound profiles providing a complete picture of the environmental noise under octave bands
The B & C versions of the Optimus+ Green environmental sound level meter provide real time 1:3 octave band filters from 6.3Hz to 20kHz with the overall data stored alongside the time history or noise profile for each band.
Acoustic Fingerprint™ triggers and audio recording
As well as the VoiceTag™ recording, Optimus+ Green noise meters 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 (96kHz/32bit) quality which can be used for later analysis, or as Standard (16khz/16bit) quality which can be used for replay and source identification.
Tonal noise detection
The D variants use either the ISO1996-2: 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.
Outdoor Measurement Kits
Where there is a need to measure noise levels outdoor or over long periods, the Optimus+ Green sound level meters can be used with the CK:675 and CK:685 outdoor measurement kits.
These kits comprise a weatherproof case which contains the instrument and battery pack(s) along with an interface to external power and USB.
The kits also include the MK:170 outdoor microphone which provides weather protection for the microphone capsule and connects via a 10m cable to the main enclosure.
The CK:685 also contains a 3G/GPRS modem and GPS location receiver which allows the noise measurement data to be downloaded remotely to the NoiseTools software via the MyCirrus cloud system
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, the Leq View gives you the information that you need.
The 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 LCeq-LAeq (C-A) value is also measured which can be used to select PPE using the HML method. LAE is also measured along with LZPeak for regulations that use this rather than LCPeak.
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.
The Quick Setup gives access to a number of preset functions including OSHA HC & NC, OSHA HC & ACGIH and MSHA HC & EC.
The custom settings can be used to choose any other setup or configuration that you may need. Once you've chosen the setup needed it will be stored so each time you use the meter you will have the information you need.
For the two "virtual" noise meters, the LAVG, TWA, % Dose and Estimated % Dose are displayed.
Octave Band Filters for Noise Control & Selecting Hearing Protection.
The A,B and C instruments also feature real-time octave band filters which will measure the noise in 10 different frequency bands.
The octave band measurement is made at the same time as the other measurements and includes the overall level in each band along with a time history of the bands across the measurement period.
NR & NC values & curves on screen.
The D variants add NR & NC values and curves to the 1:1 octave band measurements. This information can be useful in checking the performance of HVAC systems and noise levels in rooms.
Download and analyse your data, and create comprehensive reports
All variants of the Optimus+ Green sound level meter are integrating data logging instruments. As such, you'll automatically get access to our licence-free software, NoiseTools. You'll be able to keep a record of your measurements, analyse your data in detail, and create comprehensive reports to help you make better decisions. If you choose the Optimus+ Green with 1:1 octave bands, NoiseTools can also recommend the most appropriate form of hearing protection for your team, based on your data.
You can upgrade this instrument to a more advanced version of the Optimus+ Green at any time, future-proofing your investment.
A comprehensive noise measurement device, it includes everything you need for environmental noise measurements
Large screen makes the data incredibly easy to read
Lightweight and easy-to-hold shape designed for ease of use
Available as either a Class 1 or a Class 2 instrument
No complicated setup procedure – just switch on, calibrate and start measuring
Bluetooth connectivity, allowing you to use your device with a compatible smartphone
Environmental health officers
Health and safety officers and consultants
Acoustic consultants
Airport and aircraft noise monitoring
Construction site noise monitoring
Wind farm noise monitoring
Entertainment venue noise monitoring
Measuring other environmental noise sources
Applicable Standards
IEC 61672-1:2013 Class 1 or Class 2
IEC 61672-1:2002 Class 1 or Class 2 Group XIEC
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
Type Approvals for Class 1 Instruments
LNE-25387-1 IEC 61672-1:2013
NF EN 61672-1:2014
IEC 61260:1996
NF EN 61260:1996
LNE-25387-0
EN 61672-1:2003
PTB-1.53-4052960 DIN EN 61672-1:2003-10
DIN EN 61672-2:2004-08
DIN 45657:2005-03
Applus+ 02-001-B-62/13-R
UNE-EN 61672-1:2005
Microphone
Class 1 MK:224 pre-polarized, Class 2 MK:216 pre-polarized
Microphone Preamplifier
MV:200 Removable Preamplifier (All versions)
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
Frequency Bands: 10 x 1:1 Octave Bands (31.5Hz to 16kHz, A, B & C variants)
Frequency Bands: 36 x 1:3 Octave Bands Measured (6.3Hz to 20kHz, B & C variants)
Frequency Bands: 33 x 1:3 Octave Bands Displayed (12.5Hz to 20kHz, 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 with 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
Bluetooth
BLE compatible with Android and iOS devices.
Cirrus mobile applications available from Google Play and the App Store
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, 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
IEC 61672-1:2013 & IEC 61672-2:2013
Except where modified by EN 61000-6-1:2007 & EN 61000-6-1:2007
Language options
English, French, German, Spanish. 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 Functions
CR:1720 & CR:1710
Displayed Functions
LXY, LXYMax, LXYMin, LXeq, LCPeak, LAPeak, LZPeak, LCeq-LAeq, LXE, LAIeq
Graph of Short LAeq, LCPeak
Integrators 2 & 3: TWA, Dose%, Est Dose%
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
CR:172A & CR:171A
Displayed Functions
LXY, LXYMax, LXYMin, LXeq, LCPeak, LAPeak, LZPeak, LCeq-LAeq, LXE, LAIeq
Graph of Short LAeq, LCPeak
Integrators 2 & 3: TWA, Dose%, Est Dose%
Real-Time 1:1 Octave Bands (Graphical & Numeric)
NR & NC values & curves
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
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
CR:172B & CR:171B
Displayed Functions
LXY, LXYMax, LXYMin, LXeq, LCPeak, LAPeak, LZPeak, LCeq-LAeq, LXE, LAIeq
Graph of Short LAeq, LCPeak
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
Measurement Run Time
Integrators 2 & 3: TWA, Dose%, Est Dose%
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
CR:172C & CR:171C
Displayed Functions
LXY, LXYMax, LXYMin, LXeq, LCPeak, LAPeak, LZPeak, LCeq-LAeq, LXE, LAIeq
Graph of Short LAeq, LCPeak
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
Measurement Run Time
Integrators 2 & 3: TWA, Dose%, Est Dose%
Leq LF (20Hz to 200Hz)
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, NR & NC values & curves
Tonal Noise Detection in 1:3 Octave Bands
Ln Values: 28 independent statistical values
Audio recording during measurement
where x=A ,C ,Z; y= F, S, I
Other functions may calculated by the NoiseTools software and displayed on download.
There are eight variants in the Optimus+ Green range of sound level meters: four with Class 2 performance and four with Class 1 performance. For the measurement of environmental noise exposure, it is highly recommended that a Class 1 sound level meter be used.
The table below shows the different versions and options available with each instrument.
Instrument | |||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CR:1720 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | CK:1720 | ||||||
CR:1710 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | CK:1710 | Yes | |||||
CR:172A | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | CK:172A | ||||
CR:171A | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | CK:171A | Yes | |||
CR:172B | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | CK:172B | |||
Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | CK:171B | Yes | |||
CR:172C | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | CK:172C | ||
CR:171C | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | CK:171C | Yes |