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3.
Switch on the calibrator that emits a 94-dB sound at a frequency of
1000 Hz.
4.
Remove the protective cap 'CAL' of the adjusting screw.
5.
Adjust the display of the sound level meter to 94 dB using the
screwdriver supplied with the instrument.
5. GENERAL CARACTERISTICS
•
Compliance with standards :
•
Type of microphone:
•
Sensor calibration:
•
Measuring and dynamic range:
In 3 ranges (dynamic 55 dB ) from 0 to 130 dB:
Low Range:
Medium Range:
High Range:
•
Periodicity of measurement:
•
Measurement before time-based and frequency processing:
•
Resolution:
•
Precision:
•
Frequency dynamic range:
•
Frequency weighting:
•
Time weighting:
•
Auxiliary output:
AC:
DC:
•
Temperature drift:
•
Humidity drift:
(at
•
Conditions of calibration:
Frequency Reference:
Sound level reference:
Temperature reference:
Humidity reference:
Measurement range reference: 80-130dB
Incidence direction reference: frontal
•
Environment:
- Utilisation:
- Storage:
•
Power:
•
Dimensions/weight:
•
Electromagnetic Compatibility: Emission as per EN 50081-1 Ed.1992
E
•
Sealing:
*
For frequencies lower than 100 Hz, the difference between two
measuring range can be higher than 0.7 dB.
d
*
IEC 651
ANSI S1.4
JIS C 1502
capacitor microphone
calibrated at factory using a source
at 0.2%
35-80 dB
50-100 dB
80-130 dB
2.5 times per second, rated
rms value not frequency- weighted
0.1dB
+ - 2.0 dB
from 31.5 Hz to 8000 Hz
curves A and C as per IEC651
S (slow) and F (fast) as per IEC651
1.0 Vrms , impedance 600 ohms
10mV/dB , impedance 50 ohms
< 0.5 dB (-10°C to 50°C)
< 0.5 dB pour 30% < R.H. < 90%
40°C and 1000 Hz )
1000 Hz
94 dB
20°C
65 %
0 to 50°C ( 32 to 122°F ) at <80 %
humidity, without condensation
-20 to +60°C (-4 to +140°F ) and
from 0 to 80 RH, without battery.
9V battery (type 6LR61 or 6F22 )
237 x 60.5 x 38 mm / 230 g with
battery.
Immunity as per EN 50082-1
.
1
IP44 as per CEI 60259 (Ed. 89), the
instrument must be fitted with its
protective sheath.
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