There are a number of variations within the Optimus/Optimus+ range of sound level meters. If you’re unsure as to what your product code means, this guide should help you out.
Optimus/Optimus+ Yellow – CR:15XX Series
Model Instrument Class Features
CR:152A 2 No data logging
CR:151A 1 No data logging
CR:152B 2 Data logging
CR:151B 1 Data logging
Optimus/Optimus+ Red – CR:16XX Series
Model Instrument Class Features
CR:162A 2 No data logging
CR:161A 1 No data logging
CR:162B 2 Data logging
CR:161B 1 Data logging
CR:162C 2 Data logging & 1:1 octave bands
CR:161C 1 Data logging & 1:1 octave bands
CR:162D 2 Data logging, 1:1 octave bands & on-screen NR/NC curves
CR:161D 1 Data logging, 1:1 octave bands & on-screen NR/NC curves
Optimus/Optimus+ Green – CR17XX Series
Model Instrument Class Features
CR:1720 2 Audio recording & data logging
CR:1710 1 Audio recording & data logging
CR:172A 2 Audio recording, data logging & 1:1 octave bands
CR:171A 1 Audio recording, data logging & 1:1 octave bands
CR:172B 2 Audio recording, data logging, 1:1 octave bands & 1:3 octave bands
CR:171B 1 Audio recording, data logging, 1:1 octave bands & 1:3 octave bands
CR:172C 2 Audio recording, data logging, 1:1 octave bands, 1:3 octave bands & tonal noise detection
CR:171C 1 Audio recording, data logging, 1:1 octave bands, 1:3 octave bands & tonal noise detection
Where CK appears in a product code in lieu of CR, this denotes that the instrument forms part of a measurement kit.
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