Data logging sound level meter and real time analyzer
class 1/2 | optimus CR:170 series Cirrus Research

* Simple operation ensures that you get the functions you need quickly & easily
* Class 1 or Class 2 Performance
* 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
* 14 Statistical Ln % values
* Single 120dB measurement range
* Audio recording during measurements for replay and analysis
* VoiceTag audio recording before each measurement for note taking
* Repeating measurements with manual or automatic control
* Three independent integrators to give you every function you may need to meet UK, EU, OSHA, MSHA or ACGIH all at the same time
* Latest digital technology with a high resolution colour OLED display and back-lit keypad
* 4GB memory as standard

All of optimus sound level meters will measure all of the available functions at the same time.

For example, if you've set the instrument to display the Ln View and you want to see the 1:3 Octave Bands, just press the right arrow key and you'll get the information you want.

What ever function you need, everything is measured at the same time, reducing the risk of errors during your measurements.