A Total Solution for Occupational and Environmental Noise Measurements Optimus Green Sound Level Meters

Do you need an all-in-one solution for your noise measurements? The Optimus Green gives you all the noise data you could possibly need for both environmental and occupational noise.

By measuring every parameter you need simultaneously, the Optimus Green records everything in one measurement. There's no risk of choosing the wrong function or missing any data. All you need to do to get going is switch on, calibrate and start. It's that simple.

All of your measurement data displays on the large OLED screen. You'll be able to see straight away if there are any noise issues that need further investigation. You can easily navigate screens during measurements to see the data you need.

Whether it's environmental noise monitoring, detailed noise analysis using audio recording or workplace noise measurements, the Optimus Green has you covered.

See what the Optimus Green can do for you. Use the form to contact our Noise Experts today.

Why Choose the Optimus Green?


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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 versions of the Optimus Green 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, 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 (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:670 and CK:680 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:680 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 Optimus 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.


Downloading Your Data is Simple

We'll include our NoiseTools noise analysis software with all versions of the Optimus Green, so you can keep a store and analyse your measurements.

You can upgrade this instrument to a more advanced version of the Optimus Green at any time, future-proofing your investment.

Contact our Noise Experts today to find out more.

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What our customers say..

The Optimus enables me to simultaneously get all the noise data I need, assess arising noise issues, make decisions, act on them immediately and record what's happening.

Chris Selkirk (TechIOA)

It is a first class instrument and should be the prime tool of all environmental and occupational health officers...

Dr Philip Dickinson, Professor, Massey University, New Zealand

Related Products


Which Optimus Green is right for you?

There are 8 versions of the Optimus Green Sound Level Meters, 4 with Class 2 performance and 4 with Class 1 performance.

The table below shows the different versions and options available with each instrument.

You can also use our interactive Optimus Product Selector to find the best instrument for you.

Instrument Class 1 Class 2 Type Approved Sound Level Leq/Peak TWA/Dose Data Logging & Timers VoiceTag Acoustic Fingerprint Tonal Noise Detection Ln values 1:1 Octave Bands 1:3 Octave Bands NR/NC Curves Software Support 3G/GPRS Modem Support Measurement Kit
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 Yes CK:1710
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 Yes CK:171A
CR:172B Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes CK:172B
CR:171B Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes CK:171B
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 Yes CK:171C

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Contact Us

If you have any questions or if you would like any more information, please contact us and we will be pleased to help.

Please call us on
+44 1723 891655.

You can also contact us via our contact form.

Specifications

Applicable Standards

IEC 61672-1:2013 Class 1 or Class 2

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 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 Octave Bands (31.5Hz to 16kHz, C & D variants)

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

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

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.

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