NL-53
Class 1 sound level meter
- IEC 61672 class 1 sound level meter
- Simultaneous measurement of SPL, Leq, Lmax, Lmin, LE and Lpeak
- Each parameter with Fast, Slow and Impulse
- Each parameter with A and C and Z
- Ln statistical parameters (5 of your choice, e.g. L1, L5, L50, L90, L95)
- Low power consumption, 4AA batteries provide up to 16 hours operating time
- Dynamic range 131 dB (17 - 138 dB(A))
- Selectable measurement duration and measurement resolution
- 3.5” illuminated color touch screen
- Large memory with SD memory card
- USB, LAN and RS-232 communication
- IP54 degree of protection (excluding microphone)
- back erase and pause function
- AC and DC output
- readout of measurement data with NorXfer software
Optional extensions:
Option RT: 1/1 and 1/3 octave band analysis.
- 1 - 20000 Hz
- NC curve and NC value calculated directly on the device
Option EX: Extended Program Function
- Trigger functions: level trigger, timer trigger, external trigger
- LAN communication
- use of 4 markers
- data storage adjustable from 10ms intervals
- I (Impulse) time constant and moving/sliding Leq
- continuous data output via USB, LAN and RS-232 to PC
Option WR: Waveform Recording
- audio recording simultaneously with sound level measurement
- audio recording can be started manually
- started automatically based on exceeding a set sound level limit
- continuous audio recording
- interval audio (e.g. 1st 5min every hour)
Option FFT analysis
- 2.5Hz resolution (8000 line FFT)
- ISO 1996-2 (2017) Annex J tonality delta L determination
Option BA: reverberation module (available March 2025)
- reverberation time measurement based on impulse and broadband noise excitation
Downloads:
