15.8Metrology of the class 1 DB300
Main features
DB300/1 sound level meter
Conventional mode
Integrating-averaging mode
Electromagnetic compatibility – CE
marking
As per 2004/108/CEE guideline and product standards
Standards
NF EN 61672-1 (2003)- NF EN
60651 (1994) (1995)
NF EN 61672-1 (2003)- NF EN 60804
(2000) – CEI 61260 (1995)
Accuracy class
1
Reference
Pressure level
94dB
Frequency
1000 Hz
Caliber
20-137 dB
Direction
0°: microphone axis
Measuring range
A-weighted
20-137 dB
C-weighted
25-137 dB
Z-weighted
25-137 dB
Filters by octave bands
15-137 dB
Peak channel measuring range
83-140 dB
Resolution
0.1 dB
Sound referred to input
Compatible with the linear range
X frequency weightings
A – C – Z
Filters by octave bands
16 Hz – 31.5Hz – 63Hz – 125Hz – 250Hz – 500Hz – 1kHz – 2 kHz – 4 kHz –
8 kHz – 16 kHz
Filters by third octave bands (1/3) - option
12.5 Hz - 16 Hz - 20 Hz - 25 Hz – 31.5 Hz - 40 Hz - 50 Hz - 63 Hz - 80 Hz-
100 Hz - 125 Hz - 160 Hz - 200 Hz - 250 Hz - 315 Hz - 400 Hz - 500 Hz - 630
Hz - 800 Hz - 1 kHz – 1.25 kHz – 1.6 kHz - 2 kHz – 2.5 kHz – 3.15 kHz - 4
kHz - 5 kHz – 6.3 kHz - 8 kHz - 10 kHz – 12.5 kHz - 16 kHz - 20 kHz
Y frequency weightings
Fast (F), Slow (S), Impulse (I)
Overload indicator (min)
140.5 dB
Adjustable elementary integration
duration of the LXeq for storage
1/16 s,1/8 s,1/4 s,1/2 s,1 s, 2 s, 3 s, 5 s, 10
s, 15 s, 30 s, 60 s
Integration duration – Start/Stop (max)
order
Unlimited
LXN statistical indexes
Calculation based on LXY or Lxeq, DI stored data, rounded up to the next dB
on a dynamic of 117 dB
Clock accuracy
Better than 0.005 %
Reference environment
23°C – 50% HR – 1013 hPa
Operating environment
From -10°C to +50°C / 650 hPa at 1080 hPa / from 25% to 90% HR
Storage temperature
From 0°C to +50°C
Size (L x l x e)
270 x 70 x 40 mm
Weight (battery include)
335 gr
Fixing
Fixation on the back of the instrument for tripod
62
Technical features
