Sound Level Monitor Operation - Extech Instruments SL130 User Manual

Sound Level Monitor Operation

Measurement Considerations
Initial Configuration
A/C Frequency Weighting
Slow/ Fast Response
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1. Use a windscreen to cover the microphone in windy conditions.
2. Calibrate the meter often, especially if the meter has been idle for a long period of time.
3. Do not store/operate the meter in areas of high temperature or humidity.
4. Keep the meter and the microphone dry.
5. Avoid severe vibration when using the meter.
6. Remove the battery when the meter will be stored for long periods of time.
1. Connect the AC adaptor to the side or rear AC adaptor connector
OR Install 8 AA batteries
2. Setting the TIME
a) Press and Hold the Time SET button until the hours display begins to flash.
b) Press the Time up arrow button until the hour is set.
c) Press the SET button. The minutes display will flash. Adjust as needed.
d) Press the SET button to step through and the arrow button to adjust;
Time of day
Time of day
Time of day
Year
Month
Day
Auto ON Hour
Auto ON Minutes
Auto OFF Hour
Auto OFF Minute
Change the Frequency Weighting by pressing the 'A/C' button. The 'A' or 'C' icon will appear on the
display.
With 'A' weighting selected, the frequency response of the meter is similar to the response of the
human ear. 'A' weighting is commonly used for environmental or hearing conservation programs
such as OSHA regulatory testing and noise ordinance law enforcement. 'C' weighting is a much
flatter response and is suitable for the sound level analysis of machines, engines, etc.
Most noise measurements are performed using 'A' Weighting and SLOW Response.
Press the 'F/S' button to select Fast or Slow response as desired. F or S will appear in the bottom
of the LCD display.
Select FAST to capture noise peaks and noises that occur very quickly. Select the SLOW response
to monitor a sound source that has a consistent noise level or to average quickly changing levels.
Select SLOW response for most applications.
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