Integrating Sound Level Meter / EN
08/15/16 Version No. 01
4
4. SPECIFICATIONS
Specifications apply to Model SLM 1353M fitted with Microphone model MC-22 and
Microphone Preamplifier model AP-21
Applicable standards: IEC61672-1: 2003 Class 2
IEC60651: 1979 Type 2
ANSI S1.4: 1983 Type 2
IEC60804: 1985 Type 2
Measurement functions:
•
Main processing functions
Sound level: Current time-weighted sound pressure level A or current
time-weighted sound pressure level C
Maximum time-weighted sound pressure level A or Maximum time-weighted
sound pressure level C
Equivalent continuous sound level Leq A or Leq C
Sound exposure level SEL A or SEL C
Peak Hold sound level PHA or PHC
Percentile sound level L : 05 A or L : 05 C
L : 10 A or L : 10 C
L : 50 A or L : 50 C
L : 90 A or L : 90 C
L : 95 A or L : 95 C
•
Measurement time : 1second to 24 hours
•
Measuring ranges
RMS : Total range: 30 to 130dB
Peak Hold : A – weighted or C – weighted over the top 30dB of each
measurement range.
30 – 90 : 63 – 93dB Peak Hold
40 – 100 : 73 – 103dB Peak Hold
50 – 110 : 83 – 113dB Peak Hold
60 – 120 : 93 – 123dB Peak Hold
70 – 130 : 103 – 133dB Peak Hold
•
Max. measurement level: 130dB
•
Self-generated noise level:
Typical values at 23°C using the nominal microphone equivalent capacitance of 27pF
(30-90dB range)
Weighting
Electrical
Total
“A”
22.7dB
26.1dB
“C”
21.8dB
29.5dB
