Product Description
Rion NL-52 Sound Level Meter
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The Rion NL-52 is hugely successful around the world, especially for environmental noise. The NL-52 has many clever design features which combine to make it the meter that thousands turn to when they need to quickly and easily measure noise, but the NL-52’s intuitive ease of use is undoubtedly a major factor.
The technological achievement of providing a combination of excellent colour display, a single 130 dB dynamic range and extremely low power should not be underestimated.
The NL-52 is widely used for long-term noise measurements with ANV’s Standard and Enhanced Longterm Kits together with Rion’s excellent WS-15 outdoor microphone protection and as part of ANV’s Live Leq live-to-web noise monitoring system.
Features Rion NL-52 Sound Level Meter
- IEC 61672 Class 1 Integrating Sound Level Meter (Class 2 NL-42 also available)
- PTB Type Tested with and without WS-15 outdoor microphone protection
- Octave/third octave, wav file recording, FFT and outdoor protection kit options
- Data stored as CSV file to a memory card for easy import into Excel
Specifications Rion NL-52 Sound Level Meter
NL-52 |
NL-42 |
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| 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 |
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| CE Marking,WEEE Directives, Chinese RoHS (export model for China only) |
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| 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) |
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| 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: LAIeq*2 Maximum I-time-weighted equivalent continuous sound level: LAImax*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. |
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| 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 |
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| 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 ) |
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| Correction functions | Windscreen correction: Compliant with IEC 61672-1 and JIS C 1509-1 standards when the windscreen is installed. |
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| Diffuse sound field correction: Correction of frequency characteristics in order to comply with standards (ANSI/ASA S1.4) in diffuse sound field. |
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| 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) |
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| Numerical display update frequency: 1 s Bar graph update frequency: 100 ms |
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| 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 |
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| 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). |
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| USB | Allows USB to be connected to a computer and recognized as a removable disk Allows USB to be controlled via communication commands |
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| 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 ℃) | Alkaline battery LR6 (AA): 26 h Ni-MH secondary battery: 25 h At the maximum * Depends on the setting |
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| 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 ℃ | ||
| Humidity | 10 to 90 % RH (non-condensing) | |||
| Dustproof / water-resistant performance *4 | IP code: IP54 (except for microphone) See precautions regarding waterproofing |
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| 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.
*2 NX-42EX required (sold separately).
*3 NX-42WR required (sold separately).
*4 Protection against harmful dust and water splashing from any direction.
Rion NL-52 – Datasheet
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