RION-Measure Sounds Reliably Sound Level Meter class1 NL-52 Sound Level Meter class2 NL-42

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Sound Level Meter class1Sound Level Meter class2

NL-52NL-42

Features
Optional
programs
System
construction
Peripheral
devices
Types of
Measurement
Specifications
Options
Correspondence table for
previous model and new model

Extremely user friendly ! Rion's NL-52 and NL-42 sound level meters provide full support for the measurement process.
The NL-52 and NL-42 were developed to eliminate the trouble of reading instruction manuals when conducting measurements. Large and easily viewable three-inch LCD color display. The unit (except for the microphone) is water-resistant, which means that it is unaffected by sudden rain showers. You can use rechargeable batteries to help cut down on waste, making this an environmentally friendly product.
	Sound Level Meter class1 NL-52	Sound Level Meter class2 NL-42

Features

Large color LCD screen

Three-inch LCD screen with a touch panel. High resolution screen is easy to see indoors or outdoors and even in the dark.

No paper manual is needed.

User instructions and a help function can be easily accessed on the device.


Measurement Display (Level-Time graph)	Measurement Display (Simultaneous display of Main and Sub channel)	Parameter Screen


Menu screen	Help screen

Water-resistant (Except for the microphone)

Use of rechargeable batteries

Guaranteed water-resistant to at least level IP54 (resistant to spraying water). Helps reduce failures caused by sudden rain showers. * Mounting the All-weather windscreen or rainproof windscreen helps raise the water-resistant performance of the entire unit,so that the microphone will meet IPX3 specifications.	In these new models it is possible to use rechargeable batteries which make these meters environmentally-friendly. 24 hour continuous measurement is possible (when using eneloop^® or dry alkaline batteries).
	? Please use the dedicated charger to charged eneloop^® batteries. ? When using eneloop batteries, please read the eneloop^® battery instruction manual. ? eneloop^® is a registered trademark of Panasonic group.

Continuous detailed measurements for one month

This meter can be used to conduct long-term measurements, such as environmental measurements. (If an AC adapter is used)

Example of detailed recording

If the Lp is measured at 100 ms intervals and the Leq is simultaneously measured at 10 min intervals
over a 24 h period, the total size of accumulated data is approximately 74 MB (reference value)

Functionality can be extended by a range of options

Additional functions can be added, such as simultaneous logging of raw data (100 ms Lp) and processed data(Leq and other indices), frequency analysis reverberation time measurement and long-term data recording.


1/3 octave band analysis screen	FFT analysis screen(x40)

frequency analysis function(PC) NL-52_NL-42

Data management screen of AS-60 software

Optional program function list

When the optional programs are installed, the following functions are added:

Extended function program
NX-42EX

The NX-42EX is supplied on the 512 MB SD card.
The 512 MB SD card can be used as a memory card after installing the program.

Prepares for other programs

When NX-42EX is installed*, NX-42WR, NX-42RT, NX-42RV and NX-42FT can be added.

NX-42EX
Auto store function (instantaneous value, processed value)
Comparator function
Continuous data output function

Program type Additional function	NX-42WR	NX-42RT	NX-42FT	NX-42RV
Real sound monitor (waveform recording)
Octave, 1/3 octave band analysis
Octave, 1/3 octave band filter output
FFT analysis
Reverberation Time Measurement

*The NX-42EX program cannot be uninstalled.

Auto store function

This function enables continuous measurement in Lp mode (instantaneous SPL) and Leq mode (equivalent continuous SPL)
to be conducted simultaneously.

Total measuring time of Auto store function

Up to 1 000 h Equipped with a timer function

Lp mode (instantaneous SPL) and Leq mode (equivalent continuous SPL) concept

Comparator function

This function turns on when the open collector output exceeds the set value (max. applied voltage 24 V, max. current 60 mA, allowable dissipation 300 mW).

Continuous data output function

This function enables the continuous acquisition of instantaneous values and processed values during both USB and RS-232C communication.
This is a convenient function for users who can design their own control programs, where data has to be transferred continuously from the sound level meter to the computer.

Waveform recording program
NX-42WR

The NX-42WR is supplied on the 2 GB SD card.
The 2 GB SD card can be used as a memory card after installing the program.

This function enables users to record sounds and
to process sound levels simultaneously.
Recorded data can be played on computer and used for frequency analysis.
(Uncompressed waveform WAVE file)

Sampling at 48 kHz, 24 kHz, 12 kHz, Selection of 24 bit or 16 bit

Maximum recording time (16 bit)

Memory card Sampling frequency	512 MB	2 GB	32 GB
48 kHz	1 h	4 h	79 h
24 kHz	2 h	9 h	158 h
12 kHz	4 h	18 h	315 h

Octave, 1/3 octave real-time analysis program
NX-42RT

The NX-42RT is supplied on the 512 MB SD card.
The 512 MB SD card can be used as a memory card after installing the program.

By adding the NX-42RT program to the NL-52/NL-42, octave band and 1/3 octave band analysis can be performed. Saved analysis results can be loaded and shown in an overlay graph display together with current analysis data. NC curve graph display and NC value calculation/display are also possible. Using the AS-60RT software, data can be utilized and managed on a computer.


1/3 octave band analysis screen	Overlay analysis screen	NC curve screen


Partial over all screen	Measurement screen (Level-Time graph)

Reverberation Time Measurement Program
NX-42RV

The NX-42RV is supplied on the 512 MB SD card.
The 512 MB SD card can be used as a memory card after installing the program.

By adding the NX-42RV program to the NL-52/42, reverberation time measurements can be performed. The measurement method is the interrupted noise method.This program allows storage of reverberation time decay curves, T20/T30 calculation,Txx calculation (reverberation time calculation based on a user-defined interval) and averaged reverberation time results displayed on the SLM screen.


Measuring screen (graph)	Measuring screen (numeric)	Reverberation time decay curve screen	Result screen (T20/T30/Txx)

FFT analysis program
NX-42FT

The NX-42FT is supplied on the 512 MB SD card.
The 512 MB SD card can be used as a memory card after installing the program.

By adding the NX-42FT program to the NL-52/NL-42, FFT analysis can be performed.The analysis frequency range is 20 kHz, with 8 000 spectrum lines (200 displayed).Saved analysis results can be loaded and shown in an overlay graph display together with current analysis data. Maximum zoom ratio is x40, and the top list screen can show up to 20 lines.


Analysis screen (x1)	Analysis screen (x40)	Overlay analysis screen


Linear average screen	Top list screen

System construction

Peripheral devices

All-weather

Rain-protection

Sound calibrator

Pistonphone

windscreen WS-15

This windscreen is designed for outdoor installations. It helps to reduce wind noise and is equipped with rainproof features that satisfy the IPX3 water-resistant specifications. It is used with a microphone extension cable.
(Mounting adapter WS15006 required separately)
(For All-weather windscreen WS-15, use of ST-81 is recommended.)

windscreen WS-16

This screen protects the microphone against rain for a short period of time.The rainproof performance of this windscreen is designed to satisfy the IPX3 water-resistant specifications.

NC-75

This Sound calibrator conforms to IEC 60942:2020 class 1(JIS C 1515:2020 class 1), providing a level of performance sufficient for calibrating the precision sound level meter.

Specifications

Nominal acoustic pressure level	94 dB
Nominal frequency	1 kHz

NC-72B

This Pistonphone conforms to IEC 60942:2017 class LS/M,class 1/M(JIS C 1515:2020 class LS/M,class 1/M). Allows calibration with accuracy of ± 0.10 dB.

Specifications

Nominal sound pressure level	114 dB
Frequency	250 Hz

Tripod

ST-80

This stand can be used for general acoustic measurements. The sound level meter and microphone can be mounted on the stand.

Waveform analysis software
AS-70

This software allows you to load stored WAVE files from a RION sound level meter, vibration meter or data recorder. Octave, 1/3 octave, and FFT analyses can then be performed. Playback of the real sound files is also possible.

Frequency analysis screen

Specifications

Waveform analysis	Calculations	Maximum value, Minimum value, Average value, RMS, Variance, Differential and integral calculus, HPF, LPF
Frequency weighting		Z, A, C, G, C to A, Lv (vertical) (JIS C 1510), Lv (horizontal) (JIS C 1510)
FFT analysis	Analysis points	32 to 65 536 points
FFT analysis	Display data	Power spectrum, Power spectral density, Spectrogram
Time weighting		10 ms, F, 630 ms, S, 10 s
Octave band analysis	Applicable standards	IEC 61260 class 1 (JIS C 1514 class 1)
Octave band analysis	Analysis frequency range	Octave band 0.5 Hz to 16 kHz (16 bands) 1/3 octave band 0.4 Hz to 20 kHz (48 bands)

Recommended operating environment

CPU	Intel Core i5 2 GHz or higher
RAM	2 GB or more (4 GB recommended)
HDD	20 GB free or more (100 GB or more recommended)
DISPLAY	XGA (1 024 × 768) or more
OS	Microsoft Windows 8.1 Pro 64 bit, 10 Pro 64 bit

Complete software for environmental measurements

Data management software for environmental measurement AS-60

Data management software for environmental measurement AS-60 enables the graph display of measurement data, arithmetic processing, excluded sound processing, preparation of reports, output of files, and playback of real sound files.

Easy to use
Reports easy to prepare

Simultaneous display
of multiple data items
(up to 8 data items)
Data stored in a data recorder
can be loaded
(CSV file for DA-40 Viewer)
Data combination

Data management screen

Report preparation screen

Recommended computer specifications
(Common for AS-60/60RT/60VM)

CPU	Intel Core i5 2.0 GHz or higher
RAM	2 GB or more, 4GB recommended
DISPLAY	XGA (1024 x 768 pixels) or more, at least 65 536 colors
OS	Microsoft Windows 8.1 Pro 64 bit, 10 Pro 64 bit

If AS-60/60RT/60VM is used for NL-52/42 data,
the NX-42EX is also needed.

Supported models

NL-62 *
NL-52/42 *
NL-32/31/22/21 *
DA-40Viewer

* Only auto store data are supported.

Data management software for environmental measurement AS-60RT
(Includes the octave and 1/3 octave data management software)

Adds support for handling octave band analysis data to AS-60

AS-60RT is for managing SX-A1RT, NX-62RT/42RT or NA-28 data on a computer.

AS-60 Data management screen

Data management screen

Supported models

SX-A1RT *
NX-62RT *
NX-42RT *
NA-28 *

* Only auto store data are supported.

Data management software for environmental measurement AS-60VM
(Includes the vibration level data management software)

Adds support for handling data measured with VM-55EX/53A to AS-60

Supported models

VM-55EX*
VM-53A*

* Only auto store data are supported.

Types of Measurement

Environment	Vehicles	Other industries
Specified construction work noise Specified factory noise Road traffic noise (General road, highway) Aircraft noise Railway noise (inc. bullet trains) Occupational health noise Work environment noise School health environmental noise	Car interior noise (idling car) Car exterior and interior noise (moving car) Nearby exhaust sound Tracking analysis of gear transmission	Computer acoustic power level measurement Computer component (HDD / Fan) sound level Home electronics sound rating ( home appliance sound evaluation) Water heater noise Construction machine, acoustic power level measurement Vessel interior noise Building acoustics (habitability /NC curve /sound pressure levels between rooms/evaluation of sound insulation /reverberation time measurement) Measurement of silencer effect Sound insulation measurement

Specifications

			NL-52	NL-42
Applicable standards			IEC 61672-1: 2013/2002 class 1 ANSI/ASA S1.4-2014/Part1 class 1 JIS C 1509-1: 2017 class 1	IEC 61672-1: 2013/2002 class 2 ANSI/ASA S1.4-2014/Part2 class 2 JIS C 1509-1: 2017 class 2
Applicable standards			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		In addition to main processing items, one of the following can be selected for simultaneous processing: C-weighted equivalent continuous sound level: LCeq C-weighted peak sound level: LCpeak Z-weighted peak sound level: LZpeak I-time-weighted equivalent continuous sound level: LAIeq2 Maximum I-time-weighted equivalent continuous sound level: LAImax2 The power average of the maximum level of each 5 second interval: LAtm5 The frequency weighting for the additional processing synchronizes with the frequency weighting of the sub-channel, so when the sub-channel has A-weighting, LAtm5 can be selected. When C-weighting (Z-weighting ) is selected, the additional processing LCeq and LCpeak (LZpeak) are selectable.
Microphone		Type	UC-59	UC-52
Microphone		Sensitivity level	-27 dB	-33 dB
Measurement range			A-weighting: 25 dB to 138 dB C-weighting: 33 dB to 138 dB Z-weighting: 38 dB to 138 dB C-weighting peak sound level: 55 dB to 141 dB Z-weighting peak sound level: 60 dB to 141 dB
Inherent noise		A-weighting	17 dB or less	19 dB or less
		C-weighting	25 dB or less	27 dB or less
		Z-weighting	30 dB or less	32 dB or less
Frequency range			10 Hz to 20 kHz	20 Hz to 8 kHz
Frequency weighting			A, C, and Z
Time weighting			F (Fast) and S (Slow)
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 )
Correction functions			Windscreen correction: Compliant with IEC 61672-1 and JIS C 1509-1 standards when the windscreen is installed.
Correction functions			Diffuse sound field correction: Correction of frequency characteristics in order to comply with standards (ANSI/ASA 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)
Display			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*2		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
		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*3
	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 signals using a frequency weighting characteristic selected by processing or by A, C, Z-weighting.
		Output voltage	1 V (rms values) at bar graph display full scale
	Comparator output*2		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*2
	Type of data	Instantaneous value	Lp
	Type of data	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 ℃)		Alkaline battery LR6 (AA): 26 h Ni-MH secondary battery: 25 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 90 mA (normal operation, rated voltage)
Ambient conditions		Temperature	-10 to +50 ℃
Ambient conditions		Humidity	10 to 90 % RH (non-condensing)
Dustproof / water-resistant performance *4			IP code: IP54 (except for microphone) See precautions regarding waterproofing
Dimensions, weight			Approx. 250 (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 (NX-42EX preinstalled model only)

*1 Use Rion fully guaranteed products.
*2 NX-42EX required (sold separately).
*3 NX-42WR required (sold separately).
*4 Protection against harmful dust and water splashing from any direction.

Options

Product name	Product number
Extended function program (Inst.on 512 MB SD card)	NX-42EX
Waveform recording program*2 (Inst.on 2 GB SD card)	NX-42WR
Octave, 1/3 octave real-time analysis program*2 (Inst.on 512 MB SD card)	NX-42RT
Reverberation time measurement program*2 (Inst.on 512 MB SD card)	NX-42RV
FFT analysis program*2 (Inst.on 512 MB SD card)	NX-42FT
Data management software for environmental measurement	AS-60
Data management software for environmental measurement (Includes the octave and 1/3 octave data management software)	AS-60RT
Data management software for environmental measurement (Includes the vibration level data management software)	AS-60VM
Waveform analysis software	AS-70
SD Card 512 MB	MC-51SD1
SD Card 2 GB	MC-20SD2
SD Card 32 GB	MC-32SP3
AC adapter (100 V to 240 V)	NC-98E
Battery pack	BP-21A
Microphone extension cables	EC-04 (from 2 m)
BNC-Pin output code	CC-24
Comparator output cable	CC-42C
RS 232C serial I/O cable	CC-42R
USB cable	Generic USB cable can be used
Sound calibrator	NC-75
Pistonphone	NC-72B
All-weather windscreen	WS-15
Windscreen mounting adapter	WS-15006
Rain-protection windscreen	WS-16
Sound level meter tripod	ST-80
All-weather windscreen tripod	ST-81

*1 Use Rion fully guaranteed products.
*2 NX-42EX required (sold separately).
*3 NX-42WR required (sold separately).
*4 Protection against harmful dust and water splashing from any direction.

[ Precautions regarding waterproofing ]
Before use, verify that the rubber bottom cover and the battery compartment lid are firmly closed.
To maintain the water and dust proof rating, internal packing replacement is required every five years (at cost).

Correspondence table for previous model and new model

Correspondence table for previous model and new model(Sound Level Meter class1)

Previous model lineup

New model lineup

NA-60
NL-10
NL-10A
NA-25
NL-15

NL-52

Previous model lineup

New model lineup

NL-14
NL-16
NL-18
NL-31
NL-32

NL-52 + NX-42EX

Correspondence table for previous model and new model(Sound Level Meter class2)

Previous model lineup

New model lineup

NA-09
NL-02
NL-01
NL-05
NA-24

NA-20
NL-02A
NL-01A
NL-05A
NL-20

NL-42

Previous model lineup

New model lineup

NL-04
NL-06
NL-21
NL-22

NL-42 + NX-42EX