RION Sound Level Meter NL-52( Class 1)・NL-42( Class 2)

Extremely User Friendly! Provide full support for the measurement process!

The NL-52 and NL-42 were developed to eliminate the trouble of reading instruction manuals when conduction 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

Model:

NL-52( Class 1)/NL-42( Class 2)

Maker:

RION CO.,LTD.

Features

No paper manual is needed
Water-resistant (Except for the microphone)
Use of rechargeable batteries
Continuous detailed measurements for one month
Functionality can be extended by a range of options

NL-42/52/62: Sound Level Meter

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
					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: 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ｴ-time-weighted equivalent continuous sound level: LAｴeq＊2 Maximum ｴ-time-weighted equivalent continuous sound level: LAｴmax＊2 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
				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 )
Calibration					Electrical calibration performed according to IEC and JIS standards, using internally generated signals: acoustic calibration performed with the NC-75.
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＊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＊2＊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
				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): 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 ˚C
				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.
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 two years (at cost).

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