Sound Level Meter NL-20 Type 2 conforms to IEC and JIS standards. It is used to measure the sound pressure level generated by diesel generator and regular noise and sound level of all type of machines and environmental noise. The measurement settings and results (level values and bar graph) are shown on the backlit LCD panel. The unit incorporates the following measurement functions: sound level - Lp; equivalent continuous sound level - Leq; sound exposure level - LE; maximum sound level - Lmax; minimum sound level - Lmin; and percentile sound level - LN. The measured data are stored in the internal memory of the unit. These measured data are sent to computer or printer using a serial interface.
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