Integrating sound level meter
20 - 190 dB | Model 820/812
Larson Davis
There exists a need to select an instrument that will do just what you need it to do. The 820 was designed with this in mind. The Model 820 is the perfect environmental noise analyzer, maintaining all of the features of the 812 but with added memory, modem capability, daily and exceedance histories.
The1/2" condenser microphones used with our Model 820 allow for a wider dynamic range and greater level of accuracy. The Models 812 and 820 meet the IEC and ANSI requirements for Type 1, Precision Integrating Sound Level Meters.
Fundamental to each of these instruments is an integrating sound level meter. Each features true RMS and dual Peak detectors that operate simultaneously. Each has Slow, Fast, and Impulse detector rates. Each has A and C frequency weighting filters.
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ANSI/IEC Type 1 integrating SLM
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110 dB dynamic range
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Long Term logging capabilities: Interval, Time, Daily and Event histories (820 only)
Statistics - user selectable 6 Ln values
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Slow, Fast and Impulse Detectors
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True RMS with two separate Peak detectors
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A & C weighting
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Condenser microphone - extension cables up to 20 feet available
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64K bytes of memory (812) / 256 K bytes of memory (820
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AC/DC Output
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RS-232 Interface
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Remote communications via modem (820 only)
The1/2" condenser microphones used with our Model 820 allow for a wider dynamic range and greater level of accuracy. The Models 812 and 820 meet the IEC and ANSI requirements for Type 1, Precision Integrating Sound Level Meters.
Fundamental to each of these instruments is an integrating sound level meter. Each features true RMS and dual Peak detectors that operate simultaneously. Each has Slow, Fast, and Impulse detector rates. Each has A and C frequency weighting filters.
bullet
ANSI/IEC Type 1 integrating SLM
bullet
110 dB dynamic range
bullet
Long Term logging capabilities: Interval, Time, Daily and Event histories (820 only)
Statistics - user selectable 6 Ln values
bullet
Slow, Fast and Impulse Detectors
bullet
True RMS with two separate Peak detectors
bullet
A & C weighting
bullet
Condenser microphone - extension cables up to 20 feet available
bullet
64K bytes of memory (812) / 256 K bytes of memory (820
bullet
AC/DC Output
bullet
RS-232 Interface
bullet
Remote communications via modem (820 only)
