Optimus+ Industrial Sound Level Meter

Sonómetros

The Optimus+ Industrial Sound Level Meter captures all essential noise level data simultaneously. By adding Leq values, you can ensure your occupational noise surveys will be comprehensive and robust.

  • Optional quick settings for occupational noise measurements: EU, OSHA, ACGIH, and MSHA standards
  • Easy to use, measures all parameters simultaneously
  • Choose a Class 1 or Class 2 model
  • Large colour display so the data is easy to read
  • Available as an octave band sound level meter with NR/NC curves
Instrument class *

Choose the Class of meter you would like

Meets IEC 61672-1:2013

Meets IEC 61672-1:2013

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SKU: CR151B | CR152B | CR161B | CR162B | CR161C | CR162C
Tag: Sonómetros

Optimus+ Industrial Sound Level Meter

Basic noise measurements made easy

The standard Optimus+ Industrial Sound Level Meter is capable of measuring the maximum noise level during a session, and provides simple and easy-to-understand data, including frequency weightings and time history.

Most suited for applications where only basic noise level data is required, these models can record the sound pressure level (SPL), maximum sound level (LMax) in decibels, which refers to the loudest recorded noise level during a period of data capturing, and on specific variants, allows for data logging of the sound levels measured over a user-defined period of time. This data will give you a basic understanding of the noise levels where you are measuring, and will allow you to identify any particular noise hotspots.

Occupational noise level measurement made simple

The Optimus+ Industrial Sound Level Meter with Leq Values makes noise level measurements incredibly easy and straightforward, saving you time while capturing all essential noise level data simultaneously. This instrument captures sound pressure level (SPL), time weighted and frequency weighted values at the press of a single button.

By measuring every parameter simultaneously, you can be sure that your occupational noise survey will be comprehensive and robust, providing the level of detail required for making better-informed decisions and reporting to key stakeholders within your organisation.

Remote Operation

Sometimes it’s not possible to hold the meter whilst taking measurements, this might be due to location, the noise level itself, or the length of time you want to measure for. The Optimus+ Industrial range includes Bluetooth connectivity to help solve this; with the addition of the dBActive smartphone app, you can easily operate your sound level meter from a short distance away.

VoiceTag Audio Note Recording

Each of our data logging Optimus+ Sound Level Meters feature VoiceTag audio note recording, increasing the ease with which your NoiseTools database can be organised. Before each measurement, simply speak into the microphone to provide additional information such as the location of your reading. Once your measurement data is downloaded to NoiseTools, these audio notes are automatically converted into text.

Pattern Approval

The Optimus+ Industrial Sound Level Meter with Leq Values and with Octave Bands both have LNE Pattern Approval. See the Downloads tab for our certificate. Pattern Approval is a method where a test laboratory such as the LNE tests an instrument against a set of standard tests to ensure that it meets the performance claims of the manufacturer. Find out more here.

The Optimus+ Industrial Sound Level Meter Range

The Optimus+ Industrial Sound Level Meter is available in three models designed for various workplace noise monitoring activities. Upgrade this instrument at any time by contacting our team of experts.
Noise at Work Sound Level Meter
Optimus+ Industrial

Most suited for applications where only basic noise level data is required, this meter can record the sound pressure level (SPL), maximum sound level (LMax) in decibels and allows for data logging of the sound levels measured over a user-defined period of time.

Compare models
Meets IEC 61672 international standard
VoiceTag audio note recording
Measures everything you need simultaneously
Data logging with up to 32GB of memory
Noise at Work Sound Level Meter
Optimus+ Industrial with Leq Values

This instrument simultaneously captures sound pressure level (SPL), time weighted and frequency weighted values at the press of a single button so you can be sure that your occupational noise survey will be comprehensive and robust.

Compare models
Quick settings for EU, OSHA, ACGIH and MSHA standards
VoiceTag audio note recording
Measures everything you need simultaneously
Up to 32GB of memory for sophisticated measurements
Optimus+ Industrial with Octave Bands

This meter includes real-time 1:1 octave band filters that measure in all frequency bands at the same time; making it ideal for Noise Rating and Noise Criterion calculation.

Compare models
Quick settings for EU, OSHA, ACGIH and MSHA standards
VoiceTag audio note recording
1:1 octave bands for NR and NC calculation
Up to 32GB of memory for sophisticated measurements
We Recommend

Occupational Noise Monitoring

Watch the product video to find out how the Optimus+ Sound Level Meter makes occupational noise assessments easier than ever.

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The comprehensive solution for workplace noise

The Optimus+ Industrial Sound Level Meter captures all essential noise level data simultaneously, ensuring your occupational noise survey will be comprehensive and robust.

Find out more about the importance of workplace noise monitoring and discover our top tips to get you started.

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.

NR & NC values & curves on screen

The Optimus+ Industrial with Octave Bands features 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.

This model also adds 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.

If you choose the data logging version of the Optimus+ Industrial, we’ll include our NoiseTools Noise Analysis Software so you can keep a record of your measurements. If you choose the Optimus+ Industrial with Octave Bands, NoiseTools can also recommend hearing protection based on your data.

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

Applicable standards*1
IEC 61672-1:2013 Class 1 or Class 2*1
IEC 61672-1:2002 Class 1 or Class 2 Group X*1
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
IEC 61260:1996 & ANSI S1.11-2004
DIN 45657:2005-03
Microphone
Class 1 MK:224/MK:229 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)
Time weightings
Fast, Slow & Impulse measured simultaneously
Display
High resolution display. Ambient light sensor and illuminated keypad
Memory
8GB, 32GB factory-fit option
AuditStore
Measurement verification data stored in secure memory
Time history data rates (global settings)
10ms, 62.5ms, 100ms, 125ms, 250ms, 1/2 sec, 1 sec, 2 sec (user
selectable)
VoiceTag audio recording
Up to 30 seconds of audio notes with each measurement
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
Measurement control
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 and 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
High impact ABS-PC and soft touch back and keypad

Environmental
Operating
temperature -10°C to +50°C
Storage
temperature  -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, Italian. Other language options may be available
Software support
NoiseTools analysis software supplied as standard. Compatible with Microsoft Windows 7, 8 & 10 (32bit & 64bit)
Bluetooth
BLE compatible with Anrdoid and iOS devices
Cirrus mobile applications available from Google Play and the App Store.
All specifications, features and values are typical and are subject to change without notice.
Measurement functions
CR:152B & CR:151B
Displayed functions
LXY, LXYMax, LXYMin
Measurement run time
Stored functions
LXYMax & time history of LXYMax
CR:162B & CR:161B
Displayed functions
LXY, LXYMax, LXYMin,,LXeq, LCPeak, LZPeak, LCeq-LAeq, LXE, LAIeq
Graph of short LAeq, LCPeak
Measurement run time
Integrators 2 & 3: TWA, dose%, est dose%
Stored functions
LXYMax & time history of LXYMax
LAeq, LCeq, LZeq, LCPeak, LZPeak, LAPeak
Time history of LAeq, LCeq, LZeq, LCPeak, LZPeak, LAPeak, LAIeq
Integrators 2 & 3: LAVG , TWA. %dose
Time history of LAVG
CR:162C & CR:161C
Displayed functions
LXY, LXYMax, LXYMin, LXeq, LCPeak, LZPeak, LCeq-LAeq, LXE, LAIeq
Graph of short LAeq, LCPeak
Measurement run time
Integrators 2 & 3: TWA, dose%, est dose%
Real-time octave band filters
NR & NC values & curves
Stored functions
LXYMax & time history of LXYMax
LAeq, LCeq, LZeq, LCPeak, LZPeak, LAPeak
Time history of LAeq, LCeq, LZeq, LCPeak, LZPeak, LAPeak, LAIeq
Integrators 2 & 3: LAVG , TWA. %dose
Time history of LAVG
Octave Bands: Overall Leq & Leq Time History for each band
NR & NC values & curves
Measurement run time
Time & date of measurement start
where x= A ,C or Z
y= F, S or I
Other functions may calculated by the NoiseTools software and displayed on download.
Notes
1. Please contact Cirrus Research plc for details of the standards and approvals that are available on specific instrument types.
2. For details of the displayed and stored parameters, please refer to the optimus user manual for full specifications.
All specifications, features and values are typical and are subject to change without notice.

Additional information

Peso 0.30 kg
Dimensiones 28.3 × 6.5 × 3.0 cm
Applications

Basic Noise Level Testing

Workplace Noise Monitoring

Building Acoustics

Hardware Features

Bluetooth

Communication Interfaces

,

Compatible Applications

Memory

,

Power Supply Options

Average Operating Time

Sound Measurement Features

Applicable Standards

,

Type Approvals

,

Total Measurement Range

Frequency Weightings

, ,

Time Weightings

, ,

Data Logging

Minimum Data Logging Interval

SPL

Leq

LCPeak

Ln Values

%Dose

1:1 Octave Bands

1:3 Octave Bands

NR/NC Curves

VoiceTag Audio Notes

Brand

Cirrus Research

Application

, ,

Monitoring Duration

Short-term

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