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GPS-enabled sound level meter

Optimus+ GPS

  • Fully-integrated GPS-enabled sound level meter
  • Measures the full range of environmental and occupational noise parameters, alongside pinpoint-accurate GPS location data
  • Industry-leading time to first fix (TTFF), using GPS AssistNow data
  • Automatically geotags every measurement that's taken
  • You can review location data in our licence-free data analysis software, NoiseTools
  • No complicated setup - just switch on, calibrate, acquire your signal, and start
  • Large colour display so measurement data can be viewed easily, in any light condition
  • Lightweight and ergonomic design makes it easy to use for longer periods
  • Class 1 and Class 2 to IEC 61672-1:2013 and 61672-1:2002

Find your way through noise measurement with our first fully integrated GPS-enabled sound level meter for environmental and occupational noise monitoring

Cirrus Research's first fully integrated GPS-enabled sound level meter, the Optimus+ GPS builds on the incredible technology of our iconic Optimus range of instruments to provide pin-point accurate location data alongside every measurement that's taken.

Perfect for environmental noise assessments or outdoor occupational noise surveys, the benefit of precise GPS location data will help you understand noise levels in more detail than ever before. Not only does Optimus+ GPS provide accurate positioning data, but as all our users have come to expect, this instrument comes fully loaded with a host of features and functionality to provide the comprehensive solution to environmental and occupational noise measurement available on the market.

How will Optimus+ GPS benefit your organisation?

  • Enjoy the convenience of having access to all the functionality you need in one instrument, as Optimus+ GPS is a fully integrated GPS-enabled sound level meter
  • Rest assured that you will never miss a crucial piece of data, as Optimus+ GPS records and stores all noise parameters and location data simultaneously, at the press of single button
  • Save time acquiring a signal in the field with an industry-leading time to first fix using GPS AssistNow data
  • Make better informed decisions with detailed analysis and reporting in our licence-free software, NoiseTools, supplied as standard

 

 

See how you can take advantage of GPS location data in our licence-free software, NoiseTools

Designed with complete flexibility in mind

The Optimus+ GPS is available as either an environmental or occupational sound level meter, each of which features all the functionality of either the Optimus+ Green or Optimus+ Red, respectively.

  • IEC 61672-1:2013 Class 1 & Class 2
    Simultaneous measurement and data logging of all available parameters
  • GPS location data stored alongside every measurement that’s taken
  • Real-time 1:1 & 1:3* octave band filters
    NR & NC values and curves on screen
    Tonal noise analysis*
  • Up to 28 statistical Ln % values
  • Single 120dB measurement range
  • Acoustic Fingerprint™ audio triggering, recording and alerts during measurements for replay and analysis*
  • VoiceTag™ audio note recording and AuditStore™ measurement verification
  • Repeating measurements with manual or automatic control*
  • Pause and back-erase functions
  • High-resolution colour display and back-lit keypad for nighttime measurements
  • 4GB memory capable of storing over 10,000 measurements (expandable up to 32GB)
  • Measure up to 170dB with the optional MV:200EH microphone system
  • Bluetooth® connectivity, compatible with Android and iOS devices

* Some features are only available on the Optimus+ Green GPS. Please check with your sales representative to ensure you get the right functionality for your needs.

  • Environmental noise impact assessments over short or long periods
  • Boundary noise measurements and impact assessments
  • Outdoor occupational noise surveys and assessments
  • Hearing protection selection using HML or 1:1 octave band methods
  • Measurements to international standards and guidelines
  • Detailed noise level analysis with audio recordings
  • Location-specific noise level monitoring and analysis

Applicable standards2
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
IEC 61260:1996 & ANSI S1.11-2004
DIN 45657:2005-03

Microphone
Class 1 Instruments MK:224/MK:229 pre-polarized
Class 2 Instruments 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
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)
Additional metrics: LAeq LF (20Hz to 200Hz) & Leq LF (20Hz to 200Hz)

Time weightings
Fast, Slow & Impulse measured simultaneously

Display
High-resolution display
Ambient light sensor and 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, 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

Acoustic fingerprint audio recording
Off, manual, threshold triggered, advanced trigger
User options:
Studio quality - 96kHz/32bit WAV format
High quality - 48kHz/24bit WAV format
Standard quality - 16kHz/16bit WAV format
Pre-Trigger & Post-Trigger

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
Single or repeat measurement control with user selectable duration of manual, 1 min, 5 min, 10 min, 15 min, 30 mins, 1 hour, Lden
Automatic synchronisation and 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, 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
Material: high-impact ABS-PC with soft touch back and keypad

Environmental conditions
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 and 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

Measurement functions3
CR:162A & CR:161A
Displayed functions
LXY, LXYMax, LXYMin, LXeq, LCPeak, LZPeak, LCeq-LAeq, LXE
Graph of short LAeq, LCPeak
Integrators 2 & 3: TWA, dose%, est dose%
Measurement run time

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

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
Measurement run time
Time & date of measurement start

CR:162D & CR:161D
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

CR:1720 & CR:1710
Displayed functions
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 and 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 and duration of measurement

CR:172A & CR:171A
Displayed functions
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 and numerical)
NR & NC values and curves
14 statistical Ln% values

Stored functions
LXYMax and 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 and curves
Ln values: 14 independent statistical values
Audio recording during measurement
Time, date and duration of measurement

CR:172B & CR:171B
Displayed functions
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 and numerical)
Real-time 1:3 octave bands (graphical and numerical)
NR & NC values and curves
Leq LF (20Hz to 200Hz)
14 statistical Ln% values

Stored functions
LXYMax and 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 and curves
Ln values: 14 independent statistical values
Audio recording during measurement
Time, date and duration of measurement

CR:172C & CR:171C
Displayed functions
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 and numerical)
Real-time 1:3 octave bands (graphical and numerical)
Tonal noise detection in 1:3 octave bands
NR & NC values and 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 and curves
Ln values: 28 independent statistical values
Audio recording during measurement
Time, date and duration of measurement

where x=A ,C or Z
y= F, S or I

Other functions may be calculated by the NoiseTools software and displayed on download.


Notes
**Specifications are typical and may differ between Optimus+ Red GPS and Optimus+ Green GPS instruments.
2. Please contact Cirrus Research plc for details of the standards and approvals that are available on specific instrument types.
3. 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.

So, ready to book a personal demo and ask about pricing?

Find out more about how Optimus+ GPS can help you monitor and manage your noise and environmental impacts by speaking to one our in-house noise measurement experts.

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