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Halo, Saya Pebisnis Saya mengenal produk ini dari https://www.indotrade.co.id dan saya lihat hal ini mungkin berguna untuk anda. ------------------------------------------------------- Sound Level Meter NL-20 Features Sound Level Meter NL-20 Conpliant with IEC standards and new IEC/ CDV 61672-1 standrd Wide dynamic range of 100 dB eliminates need for range switching Simultaneous measurement of equivalent continuous sound level Graph display shows sound lebel fluctuation; available when using back-erase function Easy-to-read backlit LCD display Up to 34 hours of continyous operation possible with four IEC R6 ( size AA) alkaline batteries; external power supply by AC adapter. Product Details Applicable standards IEC60651: 1979 Type 2 IEC60804: 1985 Type 2 IEC/ CDV: 61672-1 Class 2 Measurement functions Sound level ( Lp) Equivalent continuous sound pressure level ( Leq) Sound exposure level ( LE) Maximum ( Lmax) and Minimum ( Lmin) sound pressure level Percentile sound pressure level ( LN) ( 5 selectable settings) Measurement range A weighting: 28-138dB C weighting: 33-138dB Flat: 38-138dB Measurement range A weighting: 28-138dB C weighting: 33-138dB Flat: 38-138dB Frequency range 20-8000 Hz ( including microphone) Time weighting Fast, Slow Microphone 1/ 2-inch elected condenser type UC-52 Display Backlit LCD panel ( 128 X 64 dots+ 121 icons) Power requirement Four IEC R6 ( size " AA" ) batteries AC adapter NC-34 series ( option) Battery-life 34 hours Dimensions and weight 260 ( L) X 76 ( W) X 33 ( D) mm; Approx. 400g ( incl. batteries) Untuk informasi selengkapnya, silahkan ke http://www.indotrade.co.id/alat-teknik/2279666
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