REED SL-4012 User manual

Sound Level Meter (Reed SL-4012)
Sound Level Meter measures the sound level in an area in decibels (dB)

Procedure
1) Turn machine on (“Power”)
2) Select Range, if necessary (30-80, 50-100, 80-130 dB or leave as “Auto”)
3) Press “Rec Max/Min” when ready to perform test (Make sure “max” or “min” are NOT shown on
the screen during testing period)
4) When test is complete, Press “Rec Max/Min” to obtain maximum and minimum level readings
5) To reset readings, press and hold “Rec Max/Min” until “Rec” disappears from the screen
Measurements
1) Decibels (dB)
Sampling Methods
• Account for the time of day (morning, afternoon, evening etc.)
• Account for the surrounding area (5m away from area, 10m away from area, etc.) to determine
if there are significant changes in the reading
• Consider the time of reading if taken during shift work, sometimes shift work is slow at the
beginning and slows down as shift comes to an end
• Determine if outside weather affects the reading (open or close area)
• Note the frequency and duration of the sound for each reading