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BRUEL & KJAER
Measuring Instruments
2226
BRUEL & KJAER 2226 User Manual
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Instruction
Manual
Integrating
Sound
Level
Meter
Type
2225
Integrating
Impulse
Sound
Level
Meter
Type
2226
1-~-~-1
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0..
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or;
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Briiel•l(
j
ar
~
Type
22211
033-0523
Two
portable
Sound
Level
Meters
with
easy-
to-read
"thermometer"
display,
complying
with
IEC
651
Type
2*,
DIN
45634
and
ANSI
S1
.4
-
1971
Type
S2A.
An
A-weight-
ing
network
is
built-in.
"Fast"
and
"Slow"
time
constants
and
a
one
minute
L
eq
easily
converted
to
SEL
(LAx)
on
both
meters.
In
addition
the
2225
has
a
"Peak"
hold
and
the
2226
an
"Impulse"
function
and
"Max.
hold"
facility
on
all
time
constants.
The
measuring
range
from
25
dB(A)
to
1
40
dB(A)
peak
is
covered
in
4
overlapping
40
dB(A)
ranges.
Automatic
reset
and
other
features
enable
operators
to
make
accurate
valid
measurements
after
a
short
period
of
familiarisation.
DC
output
to
a
level
recor-
der.
Supplied
with
Prepolarised
Condenser
Mic-
rophone
Type
4175
•
except
for
"Max
.
hold"
on
2225
+
BrUel
&
Kjaer
2
Table of Contents
Default Chapter
5
Table of Contents
5
1 Introduction and Specifications (Product Data)
9
2 Controls
9
3 Operation
14
Introduction
14
General Considerations
14
Mounting the Microphone
15
Calibration
15
Sound Level Measurements
16
General
16
Procedure for Sound Level Measurement
17
Noise Dose Measurements
18
Sel(Lax) Measurement
18
4 Use with Other Instruments
19
DC Level Recording
19
5
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BRUEL & KJAER 2226 Specifications
General
Frequency Range
20 Hz - 20 kHz
Standards
ANSI S1.4
Weighting
A, C
Time Weighting
Fast, Slow, Impulse
Power Supply
Batteries or External DC
Detector
RMS
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