EspaƱolYour region
Tel.  +44 845 680 0313
Home > Products > Optimus > Green (Environmental Noise)

Optimus Green - Environmental Sound Level Meter

The Optimus Range
Overview Measurement Using It Software Options    

The Optimus Green sound level meter is for measuring environmental noise in communities and around the outside of industrial sites.

  • Environmental noise surveys - long term or short term
  • Occupational noise
  • Noise Ordinance and Community noise assessments
  • Mix of industrial and residential
  • 12 year warranty

Measure all, think later - the Optimus range of meters measure all parameters at the same time, so there is no need to spend time figuring out if you have the meter set up correctly before starting a measurement. As well as all the acoustic parameters needed for environmental noise measurement, the Optimus Green also offers:

  • Audio recording
  • Voice tag recording of comments
  • Single range 20 to 140 dB
  • Real-Time Octave Band Filters included
  • Real-Time 1/3 Octave Filters as an option
  • Weatherproof Outdoor Kit available
optimus sound level meter optimus yellow sound level meters optimus red sound level meter optimus green sound level meter optimus purple sound level meter
optimus range of sound level meters

The Optimus Green sound level meter is available as either Type 1 or Type 2 - the most common for environmental noise measurement and more accurate being Type 1. This meter also has everything needed for occupational noise measurement in line with the OSHA, MSHA, ACGIH and EU regulations, making it ideal for anybody involved in both environmental (outside the factory) and occupational (inside the factory) noise.

There are many features included with this meter that are designed to make the task easier. Functions such as a single measurement range, voice notes and audio recording are included in all Optimus Green meters.

The Green range also includes real-time octave band filters and data logging with software and download cable. They measure A, C and Z frequency weightings simultaneously along with Fast, Slow and Impulse time weightings.

If the meter is to be left unattended in poor weather conditions then the Outdoor Kit should be used to offer protection against the elements. The Outdoor Kit also includes a large rechargeable battery pack for at least seven days of monitoring.

noise measured outside noise measured in the dark  

Our Recommendation

Most environmental noise surveys demand the use of a Type 1 Sound Level Meter that can make repeating measurements, such as the 5 minute LAeq and L90 (background noise).

We recommend the Type 1 Optimus Green with Data Logging (order code CR171A ). If there is any noise with a high tonal content, then the 1/3 Octave Band option is recommended (order code CR171B).

All environmental noise regulations demand the use of a Sound Level Calibrator. We recommend the Type 1 Calibrator, order code CR515.

Versatile Display for Use in Bright or Dark Conditions    

  Standards IEC 61672 Class 1 or Class 2
IEC 60651, IEC 60804 & ANSI S1.4 Type 1 or Type 2
Octave & 1/3 Octave Filters to IEC 61260 & ANSI S1.11
  Display Hi resolution graphic OLED with illuminated keypad
  Memory* 4GB expandable. Up to 10000 measurements stored
  Time History Store* 10ms, 62.5ms, 125ms, 0.5s, 1s, 2s (user selectable)
  Voice Tag* 30 seconds of audio with each measurement
  Physical & Power  
  Size 283 x 65 x 30 mm
  Weight 300g
  Battery 4 x AA Alkaline (typically 12 hours)
  External Power 5V via USB socket from PC or Power Supply
  Tripod Mount 1/4"
  Temperature -10°C to +50°C (storage -20°C to +60°C)
  Humidity Up to 95% RH non-condensing
  Acoustic Technical  
  Range 20 to 140 dB RMS - Single Range
  Noise floor <18dB(A) Class 1, <21dB(A) Class 2
  Freq. Weightings A, C & Z measured simultaneously
  Time Weightings Fast, Slow & Impulse measured simultaneously
  Integrators Three simultaneous "virtual" noise meters
  Ln Statistical Values 14 Ln values. Preset: L1, L5, L10, L50, L90, L95 & L99
plus seven user defined Ln values
  Audio Recording Manual or threshold triggered
Standard quality: 16-bit, 16 kHz sampling
High quality: 32-bit, 96 kHz sampling
order codes
Optimus Green Order Codes
CR172A Class 2 Int. Sound Level Meter with Logging & Octaves $3181.00
CR172B Class 2 Int. Sound Level Meter with Logging & 1/3 Octaves $4256.00
CR171A Class 1 Int. Sound Level Meter with Logging & Octaves $3948.00
CR171B Class 1 Int. Sound Level Meter with Logging & 1/3 Octaves $5122.00

CR514 Class 2 Acoustic Calibrator $365.00
CR515 Class 1 Acoustic Calibrator $514.00
CK280 Optimus Carry Case
CK670 Weatherproof Outdoor Kit

CU-USB AC Power Adapter $31.00
CU-CUSB Car Accessory Socket Power Adapter $26.00
Order Codes...
optimus green datasheet Optimus Green
Datasheet (PDF, 942k)


Email Address
info request
Telephone +44 845 680 0313  
Home - Contact - Applications - Products - News - Resources - Search - Help
Sound Level Meters - Dosimeters - Noise Signs - Microphones & Calibrators