SOUND LEVEL METER CLASS 1 WITH ANALYSIS OF 1/3 OCTAVE BAND |
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HT-157 |
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Product |
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HT-instruments (Italia) |
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Fungsi |
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Untuk mengukur kebisingan di area kerja |
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Specification : |
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Device category (Class) |
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Class 1 |
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Noise measuring range |
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25 ÷ 140dB |
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Noise measurement resolution |
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0.1 ÷ 0.01dB |
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Frequency range |
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10kHz ÷ 20kHz |
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Dynamic range |
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90dB |
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Measurement of sound pressure level (SPL) |
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Measurement of equivalent noise levels (Leq) |
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Frequency weighting |
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A/C/Z A/ |
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Integration over time |
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Fast/Slow/Impulse |
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Statistical |
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LAFp, LAFmax, LAF5, LAF10, LAF50, |
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LAF90, LAF95, LAFmin, SD, LAeq1s, LAeq,T, LAE, LAfeqT. |
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Level linear range |
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>90dB |
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Resolution |
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0.1dB (Statistic), 0.01dB (1/1 e 1/3 OCT) |
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Frequency range |
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10Hz ÷ 20kHz (±0.2dB) ; 1Hz ÷ 23kHz (±1.0dB) |
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Range gain |
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-10dB, 0dB, 10dB, 20dB, 30dB, 40dB |
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Range control error |
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≤ 0.1dB |
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Self-generated noise voltage: |
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<4μV (1Hz ÷ 23kHz linear) |
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Background noise |
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<13dB(A), 15dB(C), 25dB(Z) |
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Total noise |
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<18dB(A), 23dB(C), 28dB(Z) |
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Measuring voltage range |
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15μV ÷10V (TRMS) |
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Frequency weighting |
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A / C / Z |
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Time weighting |
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Fast, Slow, Impulse, Peak C+, Peak C- |
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A/D internal converter |
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24 bit |
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ampling rate |
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20.8μs (48kHz) |
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ntergration time |
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1s ÷ 24h pre-defined or customized |
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Internal memory |
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64kBytes flash memory |
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Data storage |
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max 128 groups / max 256 calibrations |
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Peak measurements (Peak-, Peak+) |
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Display of MAX/MIN values of SPL |
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Statistic analysis of noise with "A" weighting |
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SPL analysis in 24H |
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Spectrum analysis with octave-band filter (1/1) |
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19Hz ÷ 16kHz |
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Spectrum analysis with 1/3 octave-band filter |
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Provided mobile calibrator |
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Class 1 |
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Manual calibration with trimmer |
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Precise calibration with internal procedure |
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Pre-polarized “1/2” condenser microphone |
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AC and DC analogue outputs with 3.5mm jack |
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only AC |
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Internal memory for data saving |
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128 |
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Recalling of results on the display |
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Mini-USB interface for PC connection |
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Windows software for saved data analysis |
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Display |
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LCD 240 x 160 |
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Display backlight |
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Power supply |
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Provided external power supply |
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Reference standards |
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IEC61672 Class 2 - IEC61620 Class 2 |
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Size (LxWxH) (mm) |
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285 x 90 x 39 |
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Weight in grams (batteries included) |
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500 |
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Guidelines |
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CE MARK |
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DLgs. 81/08 |
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EMC 2014/30/EU |
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EMC: IEC/EN61326 |
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IEC60651 Class 1 |
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IEC60804 Class 1 |
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IEC61260 Class 1 |
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IEC61672 Class 1 |
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IEC/EN61010-1 |
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