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Preface Please read the operating manual carefully before using the product. The Sound Level Meter is an instrument used to measure the ambient sound level, such as sound level around factories, workshops, schools, residential, offices, road, audio etc. It also can be appropriate for noise engineering, product quality control, health prevention and treatment, etc.
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Display Description Display Description symbols symbols FAST High speed OVER Over flow SLOW Low speed A weighting mode HOLD Keep C weighting mode UNDER Below Decibel Maximum SONE Sound unit (sone) Minimum Battery power Functional characteristics description ● This sound level meter complies with IEC651 Type 2 and ANSI S1.4 Type 2.
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● Dynamic range of sound pressure: 50 dB (for each measurement gear level). ● Sound pressure measurement scope: 30-130 dBA, 30-130 dBC. ● Sound pressure frequency weighting characteristics: A and C characteristics. ● Dynamic characteristic of sound pressure: FAST 125ms, SLOW 1sec ●...
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Basic usage methods Press the power switch, the default measurement is auto range microprocessor of LCD display is 30~130 dB. And the measured onsite sound level will display within this range. If one of the “UNDER” or “OVER” icons displays on the LCD, it means that onsite sound is either lower or higher than the limit range.
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Auto range (30-130 dB) is not suitable for measuring transient impact noise. When you measure sound level outside, theanti-wind ball should be installed on the microphone head to avoid blowing directly into the microphone and generating airflow noise. If “ ”symbol displays on the LCD, it means that the battery voltage is too low.
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