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SL355-en-GB_V1.8 8/17
13. Specifications
Applicable Standards:
±1dB high accuracy meets Class 2 standards (IEC 61672-2013 and ANSI/ASA S1.4/Part 1)
IEC 61252:2000, ANSI S1.25 – for dose meter and sound exposure meters
IEC 60651 – 1979 Type 2 for sound level meters
IEC 60804 – 2000 Type 2 for integration sound level meters
ANSI S1.43 – 1997 for integrating sound level meters
Microphone:
1/2-inch electret condenser microphone with 31-inch integral cable.
Display
: Liquid Crystal Display
Measurement Ranges:
Linearity and Indicator ranges at 4 KHz (IEC 60804):
60 – 130: 60 – 130dB (A and C)
70 – 140: 70 – 140dB (A and C)
Peak Ranges:
‘C’ Frequency Weighted Peak or Linear (Z) Peak over the top 40dB of each range:
60 – 130db: 93 – 133dB Peak
70 – 140db: 103 – 143dB Peak
Accuracy:
± 1.0 dB @ 1kHz
Frequency Weighting:
RMS Detector: ‘A’ or ‘C’; Peak Detector: ‘C’ or ‘Z’ (flat or linear).
Response Time Weighting:
Fast and Slow (RMS detector).
Exchange Rate (Q):
3, 4, 5 or 6 db
Stabilization Time:
10 seconds after the meter is switched on.
Threshold and Criterion Levels:
Threshold Level: 70 – 90dB in 1dB steps; Criterion Level: 80, 84, 85
or 90dB.
Overload Indication
(
)
:
0.1dB above the selected measurement range.
Under–Range Indication (
):
1dB below the selected range.
High Level Detector:
115dB
Keypad Lock:
and
simultaneously to lock;
and
simultaneously to unlock.
Clock:
Real-time clock with calendar.
Memory:
20 noise surveys can be stored.
Measurement Control:
Measurement Duration may be set to 5, 10, 15, or 30 minutes or 1, 2, 4, 8, 10,
12, or 24 hours.
Timers:
Up to 5 timers (automatic start and stop) can be set (maximum up to one month ahead of
measurement time). Timer Controlled Start/Stop: Configured using PC software or meter keypad.
Logging:
All measurement parameters values can be logged, if the Logging Period is
≥ 1 minute.
