Instruction
Manual
Precision Integrating Sound Level Meters
Types
2221
and
2222
1-0330601-1A
BE
0601
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Pocket-sized
Preco:lslon
Integrating Sound
Level
Meters
complying with Proposed IEC
standard
for
Precision Integrating Sound
Level
Meters Type 1
P,
and relevant sections
of
IEC
651
type 1, DIN-IEC
651
Klasse 1,
ANSI S1.4.1971 type 1, and BS 5969 Type
1.
It measures
Leq
over periods up
to
2,
77
hours, SEL and Max. Hold "Fast/Slow" and
"Peak". The measuring range
from
25
to
145 dB Is covered In
four
overlapping sub-
ranges and the
results are
directly
shown on
a
digital
display with
0,1
dB resolution. An
AC
output
Is provided
for
recording
pur-
poses. It Is supplied with Prepolarlzed
Con-
c;:tenser
Microphone Type 4176.
Types
2221
and 2222 are Identical
except
that
the Type
2221
has a "Fast" time weight-
ing,
whilst the Type 2222 has a "Slow" time
weighting.
+ Briiel & Kjaer
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