What is Sound Level Meter?

A Sound Level Meter (SLM) is an instrument designed to measure directly sound-pressure levels while incorporating frequency weighting networks which approximate the inverse of equal loudness contours at various levels.

From: Reference Data for Engineers (Ninth Edition), 2002

ST-11/11D 

Class1ComplieswithIEC61672:2013,DataLogging,SoundRecording,widemeasuringrange27-140dB,10 Hz-20kHzfrequencyrange,27dB-140dBmeasurementrange,MeasuresanddisplaysLeqvalue
• Class 1 Complies with IEC-61672-2013
• 10 Hz-20k Hz frequency range
• 27 dB-140 dB measurement range
• Data logging & record function(St-11D)
• Measures and displays Leq value
• Long term measurement

ST-109 

IEC61672-1:2002Class1,ANSIS1.4Type1,CNSNO.7129Type1,JJG-188-2002Class1,usedforUKControls ofNoiseatWorkRegulations,OSHAOccupationalNoisestandards
• Fast, slow, Impulse response times.
• Wide frequency range: 10Hz~20KHz.
• Wide measurement range: 30dB~130dB
• Wide dynamic range: 100 dB
• A / C / Z frequency weighting
• Sound Exposure Level SEL, Peak, Reverberation Time (RT60)
• Data logger function, stored up to 32,000 records,auto-mating
• Remote control through connected PC

ST-130 

meetthestandarddosemeasurementofOHSA,IECandISOregulations,small,lightweight,cable-freedesigns,OSHA&IECNoiseDosimeter
• Perform OSHA and IEC noise accumulation surveys
• 6 built-in standard dose measurement setups: OSHA/ MSHA/DOD/ACGIH/ISO85/ISO90
• Data logger up to 10,00,000 readings
• Adjustable criterion level, exchange rate & threshold
• Sampling times between 1 sec to 2 hr
• Stores up to 10,000 dose meter survey results
• Dose Meter Mode: record time stamp, %Dose, TWA8, LEP, 8h, Leq, SEL, LN%, SPLmax, SPLmin, PeakMAX
• Sound Level Meter mode: Leq, PeakMAX & SEL
• USB interface. Support Windows XP / Vista / 7 / 8
Class1ComplieswithIEC61672:2013,DataLogging,SoundRecording,widemeasuringrange27-140dB,10 Hz-20kHzfrequencyrange,27dB-140dBmeasurementrange,MeasuresanddisplaysLeqvalue

ST-11/11D 

• Class 1 Complies with IEC-61672-2013
• 10 Hz-20k Hz frequency range
• 27 dB-140 dB measurement range
• Data logging & record function(St-11D)
• Measures and displays Leq value
• Long term measurement

ST-109 

• Fast, slow, Impulse response times.
• Wide frequency range: 10Hz~20KHz.
• Wide measurement range: 30dB~130dB
• Wide dynamic range: 100 dB
• A / C / Z frequency weighting
• Sound Exposure Level SEL, Peak, Reverberation Time (RT60)
• Data logger function, stored up to 32,000 records,auto-mating
• Remote control through connected PC
IEC61672-1:2002Class1,ANSIS1.4Type1,CNSNO.7129Type1,JJG-188-2002Class1,usedforUKControls ofNoiseatWorkRegulations,OSHAOccupationalNoisestandards
meetthestandarddosemeasurementofOHSA,IECandISOregulations,small,lightweight,cable-freedesigns,OSHA&IECNoiseDosimeter

ST-130 

• Perform OSHA and IEC noise accumulation surveys
• 6 built-in standard dose measurement setups: OSHA/ MSHA/DOD/ACGIH/ISO85/ISO90
• Data logger up to 10,00,000 readings
• Adjustable criterion level, exchange rate & threshold
• Sampling times between 1 sec to 2 hr
• Stores up to 10,000 dose meter survey results
• Dose Meter Mode: record time stamp, %Dose, TWA8, LEP, 8h, Leq, SEL, LN%, SPLmax, SPLmin, PeakMAX
• Sound Level Meter mode: Leq, PeakMAX & SEL
• USB interface. Support Windows XP / Vista / 7 / 8
Class 1 Sound Level Meter

A Class 1 Sound Level Meter is a noise measurement instrument that meets the requirements of IEC 61672-1:2002 (or an equivalent such as BS EN 61672-1:2003) to Class 1 performance. This standard specifies two levels of performance, Class 1 and Class 2, with Class 1 being effectively more accurate.

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