General Noise Meter NL-42EX

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last updated：Jul 09, 2018

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Easy operation with a 3-inch large screen.

【3-inch large color LCD screen】 Touch panel type, high quality visibility in indoor, outdoor, and dark places. 【Non-slip rubber grip included】【No manual required】 Menu displayed in Japanese, easy operation by following screen guidance. 【Waterproof】 Waterproof performance that withstands sudden rain (excluding microphone part). 【Compatible with rechargeable batteries】【Continuous measurement for one month】【Abundant options】 Additional long-term data recording and frequency analysis functions.

Related Link - https://www.ascom411.com/rental/noise_vibration/no…

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basic information

1. Calculations (Main channel) 1) Time-weighted sound level Lp 2) Time-averaged sound level Leq 3) Acoustic exposure level LE 4) Maximum time-weighted sound level Lmax 5) Minimum time-weighted sound level Lmin 6) Time rate sound level LN (05, 10, 50, 90, 95) up to 5 values 2. Calculations (Sub channel) 1) Time-weighted sound level Lp 3. Additional Calculations As a simultaneous measurement function with calculations, one of the following measurements is possible: 1) C-weighted time-averaged sound level LCeq 2) C-weighted peak sound level LCpeak 3) Z-weighted peak sound level LZpeak The frequency characteristics of additional calculations are linked to the frequency characteristics of the sub channel, so if the sub channel is C-weighted (Z-weighted), additional calculations LCeq and LCpeak (LZpeak) can be selected. 4. Calculation Time 10 seconds, 1, 5, 10, 15, 30 minutes, 1, 8, 24 hours, and manual setting of any time is possible. Manual calculation time: up to 24 hours.

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Applications/Examples of results

Applicable Standards Measurement Law General Noise Meter JIS C 1509-1: 2005 Class 2 IEC 61672-1: 2002 Class 2 ANSI S1.4-1983 Type 2 ANSI S1.43-1997 Type 2 CE Marking (EMC Directive 2004/108/EC, Low Voltage Directive 2006/95/EC), WEEE Directive, China RoHS (for China exports only) Measurement Functions Simultaneous measurement of the following items with selected time weighting characteristics and frequency weighting characteristics.