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Optimus Yellow - Sound Level Meter

The Optimus Range
Overview Measurement Using It Software Options    
 

Noise Measurements

One of this meter's most useful features is its ability to measure all the noise parameters at the same time. When the time comes to make a measurement, you have no doubts about whether you have made the correct settings.

  • Measures all parameters at the same time
    • Fast, Slow, and Impulse time weightings
    • A, C and Z frequency weightings
    • Maximum (Lmax) and Minimum (Lmin) for all of above
  • Data logging versions also store:
    • Max sound level (Lmax) with:
      • A, C, Z frequency weightings
      • Fast, Slow, Impulse response
    • Time History (see below)
    • Date, Time and run time
 
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optimus range of sound level meters
sound level parameters
Typical Sound Level Display

Most noise measurement regulations will clearly state the parameters that should be measured. For most, this will include the "A" weighted Sound Level, with a time response of either Fast or Slow. To keep things clear, the meter shows only the most commonly used parameters on the screen.

The display on the left shows the current Fast Sound Level (LAF) as a large number. Below that are the maximum (LAFmax) and the minimum (LAFmin) and the measurement time.

The bar on the left shows the current sound level. It can be set to change color when preset levels have been exceeded.

   

Data Logging Options - Parameters Stored

The display shows the commonly used parameters, but with the Data Logging option fitted the meter stores the maximum sound levels for all time and frequency weightings, along with a time history for the more common ones.

Summary Store

The overall parameters for the noise measurement are stored for all frequency and time weightings.

Time History Store

The meter can be set to store time history measurements at one of a number of rates between 10ms and 2 seconds. Four maximum sound level (Lmax) values are stored for each sample: LAFmax, LASmax, LCFmax, LCSmax.

noise time history
Time History Shown in the Software
   
voice notes

Voice Tag

Before starting a measurement, the meter will ask if you want to record a "Voice Tag". The meter will record any speech or the noise in question (to help you identify it later) for up to 30 seconds. This audio is transferred to the software automatically along with the measurement.

You can skip this stage if you don't need a voice tag, or the option can be disabled altogether.

 
 

 

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