Introduction:
Aplication: Mainly be used for automatic measurement of environmental noise， also can be used for other noise measurements
Characteristics:
·Instead of some traditional sound level meters, its stability and reliability was greatly increased by using digital detector technology
·128×64 dot matrix LCD,with background light, high capacity,can display both data and chart.
·With data acquisition function,can be used for the noise measurement around airport.
·Large LCD,with background light
·Can be connected with micro-printer to print measurement results and computer to process and archive.
·Instantaneous sound level output
Technical Parameters:
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Model |
NA98 Multi-functional Noise Analyzer |
NA98A Multi-functional Noise Analyzer |
NA98C Multi-functional Noise Analyzer |
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Standard |
GB/T3785 2,IEC61672 2,JJG188-2002 2 |
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Frequency Range |
20HZ～12.5KHz |
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Measuring Range |
30dB～130Db(A) 35dB～130Db(C) |
35dB～130dB |
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Type of the microphone |
Φ127mm Electret condenser microphone |
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Frequency weighted |
A,C,Z(no weighting) |
A,C |
A,C |
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Time-weighted |
Fast(F) Slow(S) |
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Range conversion |
Manual（high,middle,low） |
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Measuring Function |
Lp,Leq,LAE,LN,SD.Lmax.Lmin,L5,L10,L50,L90,L95,Ld,Ln,Lch and dynamic bar chart of instantaneous value |
Lp,Leq.LAE,LN,SD,Lmax,Lmin,L5,L10,L50,L90,L95 |
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Data acquisition function |
the noise calculation around airport |
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--------- |
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Data Storage |
500 groups data or 80 groups data per 24 hours |
500 groups data |
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Display Model |
128×64 dot matrix LCD |
Special homemade large screen LCD |
2×8 LCD character dot matrix |
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Clock |
Real-Time Clock，back-up battery in the machine |
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output |
AC signal |
--------- |
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Interface |
RS232 interface |
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Power supply |
Battery:4×LR6(5#),or 6V DC external power supply |
Battery:2×LR6 |
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Dimensions |
230mm×72mm×30mm |
200mm×63mm×30mm |
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Weight |
0.4kg |
0.3kg |
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