SoundAdvisor Specifications
Model 831C Standards, Features, and Specifications
| STANDARDS |
| The Model 831C meets the specifications of the following standards: |
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Sound Level Meter Standards
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IEC61672-1 Ed. 2.0 (2013) Class 1, Group X
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IEC60651 Ed 1.2 (2001) plus Amendment 1 (1993-02) and Amendment 2 (2000-10) Type 1, Group X
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IEC60804 (2000-10) Type 1, Group X
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ANSI S1.4-2014 Class 1
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ANSI S1.43-1997 Type 1
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DIN 45657
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Octave Filter Standards (Option 831C- OB3)
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IEC61260 Ed. 2.0 (2014) Class 1, all filters
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ANSI S1.11-2014 Class 1, all filters
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Safety Requirements for Electrical Equipment for
Measurement, Control and Laboratory Use
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2006/95/EC Low Voltage Safety Directive
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IEC 61010-1 Ed. 3.0 (2010-06)
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EMC Immunity and Emission
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2004/08/EC EMC Directive
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IEC 61326-1 Ed. 2.0 (2012-07)
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IEC 61672-1 Ed. 2.0 (2013-09)
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FCC Title 47 CRF Part 15, Class B
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| SPECIFICATIONS |
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General
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Reference Level
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114.0 dB re. 20 µPa
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Reference Level Range
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Single large range for SLM measurements
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Reference Frequency
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1000 Hz
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Reference Direction
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0° is perpendicular to the microphone diaphragm
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Operating Temperature
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≤ ± 0.5 dB variation between -22 °F to +122 °F (-30 °C to 60 °C)
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Storage Temperature
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-22 °F to 158 °F (-30 °C to 60 °C)
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Humidity
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≤ ± 0.5 dB variation from 25% to 90% relative humidity at 104 °F (40 °C)
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Equivalent Microphone Impedance
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12 pF
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Digital Display Update Rate
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Four times per second (0.25 sec between updates). First display indication is available 0.25 seconds after initiation of a measurement.
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Effect of an Extension Cable
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None up to 200 ft (61 m) with EXCxxx cable
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Approvals
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CE, ROHS, WEEE
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Extended Weather Options
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-40 °F to +158 ºF (-40 °C to +70 ºC) operation with CER-831-E
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Physical
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Length with Microphone and Preamplifier
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11.35 in
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29.0 cm
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Length, Instrument Body Only
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8.8 in
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22.4 cm
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Width
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2.8 in
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7.1 cm
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Depth
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1.6 in
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4.1 cm
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Weight with Batteries, No Preamplifer or Microphone
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17.3 oz
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490 g
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Weight with Batteries, Preamplifer, and Microphone
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18.8 oz
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532 g
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Sound Level Meter Specifications
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Averaging (Integration Method)
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Linear or Exponential
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Time Weightings
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Slow, Fast,or Impulse
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Frequency Weightings
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A, C, and Z
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Peak Detector Frequency Weighting
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A, C, or Z
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Gain
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0 dB or +20 dB
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Sample Rate
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51,200 Hz
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Peak Rise Time
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30 µs
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Metrics Measured
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Leq, Lmax, Lmin, Lpeak, Ln (6 values), LDN, LDEN, LCeq – LAeq
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Resolution Specifications
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Levels
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0.1 dB
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Elapsed Time
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0.1 s
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Real Time Clock
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1 s
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Calendar
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Through January 1, 2038
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Integration Time
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Time Averaged Levels and Sound Exposure Levels
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Minimum
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0.1 s
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Maximum with Daily Autostore Enabled
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Unlimited
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Maximum with Daily Autostore Disabled
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> 23 days with error < 0.5 dB
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Broadband Noise Levels
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Self-generated Electrical Noise
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0 dB Gain
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20 dB Gain
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Weighting
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Typical (dB)
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Max (dB)
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Typical (dB)
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Max (dB)
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A
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13
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15
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6
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10
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C
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15
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22
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12
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16
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Z
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22
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25
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19
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26
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Self-generated Total Noise
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0 dB Gain
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20 dB Gain
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Weighting
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Typical (dB)
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Max (dB)
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Typical (dB)
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Max (dB)
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A
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18
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19
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17
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17
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C
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18
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23
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17
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19
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Z
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23
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26
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21
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26
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Note: Combination of the electronic noise and the thermal noise of the 377B02 microphone at 68 °F (20 °C) measured in a sealed and vibration isolated cavity with an averaging time of 60 seconds. Electronic noise of the instrument with an ADP090 (12 pF) in place of the microphone highest anticipated self-generated noise.
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| FEATURES |
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Ln Statistics
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Number of Selectable Parameters
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6 in xx.xx% format
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Distribution Resolution
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0.1 dB
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Spectral Statistics
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Requires Octave Analysis option (831C-OB3)
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Markers
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Number of Markers
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10
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Prenamed Markers
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Truck, Automobile, Motorcycle, Aircraft, Exclude
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Back Erase Time
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5 or 10 s
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Measurement Control Modes
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Available Modes
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Manual Stop, Timed Stop, Stop when Stable, Continuous, Single Block Timer, Daily Block Timer
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Timed Stop
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Time in hh:mm:ss
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Stop When Stable
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Delta level in xx.x dB and time in hh:mm:ss
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Continuous with Daily Auto-Store
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1, 2, 4, 6, 12, 24, 48, 96 or 144 files per day, automated file numbering
“yymmddnn.LD0”
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Restart after Power Failure
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Automatic if powered by 12 VDC and continuous run mode
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Single Block Timer
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Start date and time to end date and time
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Daily Block Timer
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Up to 3 blocks between each start and end date
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Clock Stability
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< 1 sec in 24 hours, at 75 ºF (+24 ºC)
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< 10 sec in 30 days, at -40 °F to +158 °F (-40 °C to +70 °C)
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<1 s when using NTP
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Microphone Input
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Connector
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Latching 5-pin connector
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Input Impedance
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100 kΩ and 300 pF
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Full Scale Input (0 dB gain)
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14 Vpeak
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ICP Current (requires ADP074)
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4 mA
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AC/DC Output
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Jack
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2.5 mm (3/32 in) female
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AC Output Voltage Range
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± 14 Vpeak (preamplifier output)
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± 2.1 Vpeak with 0, 20 or 40 dB gain (for LINE inputs)
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AC Output Recommended Load
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10 kΩ or greater
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DC Output Voltage Scale
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10 mV per dB, 0 V for 0 dB, 1 V = 100 dB
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DC Output Frequency & Time Weighting
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Follows SLM Settings: A, C, or Z and S, F, or I
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Power
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Batteries
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4-AA (LR6) NiMH, 1.5 V Lithium or Alkaline cells
(supplied with 2500 mAh NiMH)
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External Power (5 V from USB)
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USB Mini-B connector to
* USB interface from computer
* PSA029 AC to DC power adaptor
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External Power
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I/O connector: 10 to 25 VDC (Use cable CBL140)
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Operating Time (with power save options)
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> 18 hours (1.5 V Lithium batteries)
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> 8 hours (Alkaline or NiMH batteries)
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Power Consumption with PRM831
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1.1 W (backlight off, running)
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≤ 2 W (with DVX012)
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5 W (maximum)
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Memory Retention
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Data Memory
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Non-volatile flash memory, backup performed every minute
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Real-time Clock
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≥ 1 year with batteries removed
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