Rion NL-62 Sound Level Meter

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Product Description

Rion NL-62 Sound Level Meter

Measure Frequencies from 1 to 20000Hz.

With the auto store function included as standard, as well as a timer function and external power supply support, the NL-62 is ideal for continuous measurement. Designed for intuitive ease of use, there is no more need to consult the manual during a measurement. The large 3-inch color screen is bright and easy to read Sudden rainfall is also no problem, thanks to the water-resistant construction. Using the optional octave and 1/3 octave band real-time analysis program NX 62RT (under development), the unit can even operate as a frequency analyzer. The High-Precision Sound Level Meter NL-62 supports all your measurement needs.

Features Rion NL-62 Sound Level Meter

  • large color LCD screen (3-inch)
  • No paper manual is needed (Help function)
  • Water-resistant (IP54; except for the microphone)
  • Use of rechargeable batteries (or dry alkaline batteries)
  • Supports long-term measurements (up to about 1 month)
  • Option: Octave, 1/3 octave real-time analysis program (NX-62RT), FFT analysis program (NX-42FT)
    and Data management software (AS-60/AS-60RT).

Specifications Rion NL-62 Sound Level Meter


Applicable standards IEC 61672-1: 2013/2002 class 1
ISO 7196: 1995
ANSI/ASA S1.4-2014/Part 1 class 1
JIS C 1509-1: 2017 class 1
CE marking, WEEE Directives, Chinese RoHS (export model for China only)
Measurement functions Simultaneous measurement of the following items, with selected time weighting and frequency weighting
Processing (main ch) Instantaneous sound pressure level: Lp
Equivalent continuous sound pressure level: Leq
Sound exposure level: LE
Maximum sound pressure level: Lmax
Minimum sound pressure level: Lmin
Percentile sound levels: LN (0.1 to 99.9 %, 0.1-increment steps, max. 5 values)
Processing (sub ch) Instantaneous sound pressure level: Lp
Additional processing One of the following can be selected:
C-weighted equivalent continuous sound level: Lceq
G-weighted average sound level: LGeq C-weighted peak sound level: LCpeak Z-weighted peak sound level: Lzpeak
Power average of max. level in time weighted sound level interval LAtm5
エ-time-weighted average sound level: LAエeq
Max. value of エ-time-weighted average sound level: LAエmax
*Because additional processing frequency characteristics are linked to sub channel frequency characteristics, LAtm5, LAエeq, LAエmax can be selected when A characteristics are selected for sub channel. When C, G, or Z characteristics are selected, LCeq and LCpeak, LGeq, and LZpeak can be selected for additional processing.
Microphone Type UC-59L
Sensitivity level -27 dB
Measurement range A-weighting: 25 dB to 138 dB
C-weighting: 33 dB to 138 dB
G-weighting: 43 dB to 138 dB Z-weighting: 50 dB to 138 dB
C-weighting peak sound level: 60 dB to 141 dB
Z-weighting peak sound level: 65 dB to 141 dB
Inherent noise A-weighting 17 dB or less
C-weighting 25 dB or less
G-weighting 35 dB or less
Z-weighting 42 dB or less
Frequency range 1 Hz to 20 kHz
Frequency weighting A, C, G and Z
Time weighting F (Fast) and S (Slow), I (Impulse) and 10 s
Level range Single range (Linearity range: 113 dB)
Bar graph display range max Max. 110 dB (20 to 130 dB)
Switching of bar graph display Set the upper/ lower limit in 10 dB increments.
RMS detection circuit Digital processing method
Sampling cycle 20.8 μs (Lp, Leq, LE, Lmax, Lmin, Lpeak : sampling frequency: 48 kHz) 100 ms (LN )
Calibration Electrical calibration performed according to IEC and JIS standards, using internally generated signals: acoustic calibration performed with the NC-74.
Correction functions Windscreen correction:
Compliant with IEC 61672-1 and JIS C 1509-1 standards when the windscreen is installed.
Diffuse sound field correction:
Correction of frequency characteristics in order to comply with standards (ANSI S1.4) in diffuse sound field.
Delay time The meter can be set to start measuring a specified time (OFF, 1, 3, 5 or 10 s)
after the start button has been pressed or when a user-set trigger is exceeded.
Back erase function When the PAUSE key is pressed to pause measurement, the preceding (user selectable) 0, 1, 3 or 5 s data are excluded from processing.
Display Backlit semitransparent color TFT LCD display WQVGA (400 x 240 dots)
*LCD with touch panel (Capacitive Touch Panel)
Numerical display update frequency: 1 s   Bar graph update frequency: 100 ms
Store Manual Data for measurement results are stored manually in single address increments.
Number of data Internal memory: max. 1 000 sets
SD Card: depends on the capacity of the SD Card*1
Auto Instantaneous values (Lp mode) and processed values (Leq mode) are stored continuously and automatically at preset intervals.
Lp sampling cycle 100 ms, 200 ms, 1 s, Leq 1s and user selected time (up to 24 hours)
Leq sampling cycle 10 s, 1, 5, 10, 15, 30 min, 1, 8, 24 h, and user selected time (up to 24 hours)
Measurement Time Max. 1 000 h in Auto Lp storage mode, max. 100 000 addresses in Auto Leq storage mode (depends on the capacity of the SD card)*1
Data recall Allows viewing of stored data
Setup memory Up to five setup configurations can be saved in internal memory, for later recall Start up via file settings previously stored on SD card possible
Waveform recording*2 File format Uncompressed waveform WAVE file
Sampling frequency Select 48 kHz, 24 kHz or 12 kHz
Data length Select 24 bit or 16 bit
Outputs DC output Output DC signals using a frequency weighting characteristic selected by processing.
Output voltage 2.5 V, 25 mV / dB at bar graph display full scale
AC output Output AC signal using frequency weighting selected by processing or by A, C, Z, G weighting
Output voltage 1 V (rms values) at bar graph display full scale
Comparator output Turns on when the open-collector output exceeds the set value
(max. applied voltage 24 V, max. current 60 mA, allowable dissipation 300 mW).
USB Allows USB to be connected to a computer and recognized as a removable disk
Allows USB to be controlled via communication commands
RS-232C communication Allows for RS-232C communication via use of a dedicated cable
Data continuous output Type of data Instantaneous value Lp
Processed value Leq, Lmax, Lmin, Lpeak
Output interval 100 ms
Power requirements Four IEC R6 (size AA) batteries (alkaline or rechargeable batteries) or external power supply
Battery life (23 ˚C) Alkaline battery LR6 (AA): 16 h  Ni-MH secondary battery: 16 h At the maximum *Depends on the setting
AC adapter NC-98E
External power voltage 5 to 7 V (rated voltage: 6 V)
Current consumption Approximately 120 mA (normal operation, rated voltage)
Ambient conditions Temperature -10 to +50 ˚C
Humidity 10 to 90 % RH (non-condensing)
Dustproof / water-resistant performance*3 IP code: IP54 (except for microphone)
See precautions regarding waterproofing
Dimensions, weight Approx. 255 (H) x 76 (W) x 33 mm(D), approx. 400 g (with batteries)
Supplied accessories Storage case x 1, Windscreen WS-10 x 1, Windscreen fall prevention rubber x 1,
Hand strap x 1, LR6 (AA) alkaline batteries x 4, SD card 512 MB×1



Rion NL-62 – Datasheet

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