Optimus+ Green

Product Type


The Optimus+ Green is the most advanced variant in our popular Optimus+ range. Built as an environmental noise meter, the Optimus+ Green measures all noise parameters, including the option for both 1:1 and 1:3 octave bands. It can also record noise at tenth-of-a-second intervals, making it perfectly suited to monitoring wind farm noise. The Optimus+ Green features everything you could ever need for both occupational and environmental noise. It captures data on every noise parameter simultaneously and meets international standards governing noise measurement. The sound level meter has been designed with you in mind and helpful features like VoiceTag, help you capture and analyse all vital information, easily.

Technical Specs

Environmental Noise Measurements

  • Environmental noise impact assessments over short or long periods
  • Environmental noise monitoring outdoors with remote data download over 3G/GPRS & GPS location
  • Boundary noise measurements & impact assessments
  • Measurements to BS 4142, ISO 1996, Section 61 Notices
  • Tonal analysis using to ISO 1996-2:2007 & Cirrus Improved Method
  • Detailed analysis using audio recording
  • Occupational Noise Measurements
  • Occupational & Industrial Hygiene Noise Evaluations
  • Hearing Protector Selection using HML or 1:1 Octave Band Methods
  • Workplace noise measurements to ISO9612 Simple Noise Measurements
  • Noise Ordinance & Community Noise Assessments
  • General Noise Measurements

Key Features

  • IEC 61672-1:2013 Class 1 & Class 2
  • LNEnvironmental, PTB & APplus+ Type Approval
  • Simultaneous measurement & data logging of all available parameters
  • Simultaneous A, C & Z Frequency Weightings
  • Simultaneous F, S & I Time Weightings
  • Real-time 1:1 & 1:3 Octave Band Filters
  • NR & NC values & curves on screen*
  • Tonal noise analysis (C Versions)
  • Up to 28 statistical Ln % values (C Versions)
  • Single 120dB measurement range
  • Acoustic FingerprintTM audio triggering, recording & alerts during measurements for replay and analysis
  • VoiceTagTM audio note recording & AuditStoreTM measurement verification
  • Repeating measurements with manual or automatic control
  • Pause & Back Erase functions
  • High resolution colour OLED display and back-lit keypad for night-time measurements
  • 4GB memory capable of storing over 10,000 measurements (expandable up to 32GB)
  • Compatible with CK:670 & CK:680 outdoor noise measurement kits
  • Measure up to 170dB with the optional MV:200EH microphone system