Sound Level Meter Model 831C Larson Davis
Perhatian!
Spesifikasi Sound Level Meter Model 831C Larson Davis
Sound Level Meter Model 831C Larson Davis |
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Standards Met by Model 831C |
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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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Sound Level Meter Specifications |
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Averaging ( Integration Method ) |
Linear or Exponential |
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Time Weightings |
Slow, Fast,or Impulse |
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Frequency Weightings |
A, C, and Z |
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Peak Detector Frequency Weighting |
A, C, or Z |
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Gain |
0 dB or +20 dB |
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Sample Rate |
51,200 Hz |
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Peak Rise Time |
30μs |
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Metrics Measured |
Leq, Lmax, Lmin, Lpeak, Ln ( 6 values ), LDN, LDEN,LCeq–LAeq |
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Physical Characteristics |
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Length with Microphone and Preamplifier |
11.35 in |
29.0 cm |
Length, Instrument Body Only |
8.8 in |
22.4 cm |
Width |
2.8 in |
7.1 cm |
Depth |
1.6 in |
4.1 cm |
Weight with Batteries, No Preamplifer or Microphone |
17.3 oz |
490 g |
General Specifications |
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Reference Level |
114.0 dB re. 20 μPa |
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Reference Level Range |
Single large range for SLM measurements |
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Reference Frequency |
1000 Hz |
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Reference Direction |
0° is perpendicular to the microphone diaphragm |
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Operating Temp. |
≤ ± 0.5 dB error between -22°F to +122 °F ( -30 °C to 50 °C ) |
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Storage Temp. |
-40 °F to 176 °F ( -40 °C to 80 °C ) |
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Humidity |
≤ ± 0.5 dB error from 30% to 90% relative humidity at 104 °F ( 40 °C ) |
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Equivalent Microphone Impedance |
12 pF |
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Effect of an Extension Cable |
None up to 200 ft ( 61 m ) with EXCxxx cable |
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Approvals |
CE, ROHS, WEEE |
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Extended Weather Options |
-40 °F to +158 ºF ( -40 °C to +70 ºC ) operation with CER-831-E |
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Resolution Specifications |
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Levels |
0.1 dB |
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Elapsed Time |
0.1 s |
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Real Time Clock |
1 s |
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Integration Time |
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Time Averaged Levels and Sound Exposure Levels |
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Minimum |
0.1 s |
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Maximum with Daily Autostore Enabled |
Unlimited |
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Maximum with Daily Autostore Disabled |
> 23 days with error < 0.5 dB |
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Ln Statistics |
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Number of Selectable Parameters 6 in xx.xx % format |
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Distribution Resolution 0.1 dB |
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Spectral Statistics Requires Octave Analysis option ( 831C-OB3 ) |
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Markers |
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Number of Markers |
10 |
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Prenamed Markers |
Truck, Automobile, Motorcycle, Aircraft, Exclude |
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Back Erase |
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Back Erase Time |
5 or 10 s |
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Measurement Control Modes |
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Available Modes |
Manual Stop, Timed Stop, Stop when Stable, Continuous, Single Block Timer, Daily Block Timer |
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Timed Stop |
Time in hh : mm : ss |
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Stop When Stable |
Delta level in xx.x dB and time in hh:mm:ss |
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Continuous with Daily Auto-Store |
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 |
Automatic if powered by 12 VDC and continuous run mode |
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Single Block Timer |
Start date and time to end date and time |
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Daily Block Timer |
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 |
PALLSCIENTIFIC
adalah perusahaan swasta nasional yang bergerak di bidang Hygiene Industri dan Kesehatan Lingkungan. Bertujuan untuk menjembatani dan memenuhi kebutuhan dunia industri khususnya dan masyarakat pada umumnya. perusahaan yang bergerak di bidang perdagangan barang dan jasa dengan meng-khususkan lingkup usaha perusahaan dalam bidang pengadaan peralatan hygiene industri dan kesehatan lingkungan, Peralatan Laboratorium, alat ? alat kesehatan, serta penyediaan jasa pemantauan, pengukuran lingkungan dan perbaikan peralatan.
PERDAGANGAN BARANG
Produk yang diperdagangkan perusahan utamanya adalah produk produk yang berkaitan dengan hygiene industri, kesehatan lingkungan, kesehatan & keselamatan kerja dan Peralatan laboratorium dan alat alat kesehatan .
Produk produk tersebut antara lain :
- Peralatan Pemantau Hygiene Industri dan Keselamatan Kerja Peralatan pemantau higiene industri dan keselamatan kerja meliputi :
- Alat ukur suara ( Sound Level Meter & Noise Dosimeter)
- Alat ukur getaran ( Vibration Monitoring)
- Alat detector gas berbahaya & mudah terbakar ( Gas Detektor & Flamable Gas Detector)
- Alat untuk pengambilan sampel gas, debu, mist, fume & aerosol ( gas, fume, aerosol sample pump & monitoring)
- Peralatan Pemantau Lingkungan Jenis peralatan tersebut antara lain :
- Peralatan sampling dan analisa udara maupun peralatan untuk sampling kualitas udara pada cerobong secara isokinetik otomatis
- Alat pantau cuaca stasioner yang dilengkapi dengan penyimpanan data ( data logging) sesuai parameter yang diukur.
- Peralatan pemantau kwalitas Air Bersih dan Air Minum ( Microbiologi, PH, Conductivity, ORP, Salinity, Dissolved, Turbiditi, TDS, Resisvity, Ion Meter dll..)
- Perlatan pemantau kadar kimia dalam makanan
- Scientific Instrument, Untuk :
- Laboratorium Kimia Dasar & Kimia Klinik : Laboratorium Bio Kimia, Kimia Klinik , Kimia Analitik, Mikrobiologi, Hematologi, Parasitologi, Kimia Farmasi & Toksikologi, Serologi, Virologi & Immunologi, Kimia Air, Kimia Makanan & Minuman, dll
- Laboratorium Fisika & Biologi : Laboratorium Instrumentasi, Fisika dasar, Elektronika Medik, Radiology, alat elektronik, Elektronika Medik, Anatomi & Fisiology, Farmakologi dll.
- Media dan Reagensia, Untuk :
- Menunjang kebutuhan reagent pada Rumah Sakit, Puskesmas, Klinik, dan Laboratorium.
- Survey Meter