Sustainable Construction
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Sound Level Meter [NL-52]
The NL-52 was developed to eliminate the trouble of reading instructions 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.
Feature:
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
The manual and a help function can be easily accessed on the device.
Water-resistant
Guaranteed water-resistant to at least level IP54 (resistant to spraying water). Helps reduce failures caused by sudden rain showers
Use of rechargeable batteries
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 dry alkaline batteries).
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)
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 and long-term data recording.
Optional program function list
When the optional programs are installed, the following functions are added (Extended function program NX-42EX). Including Read sound monitor NX-42WR card, 1/3 Octave band analysis NX-42RT card, FFT analysis NX-42FT card and Simultaneous processing NX-42SP card.
Specifications
| Applicable standards | IEC 61672-1: 2002 Class 1, ANSI S1.4-1983 Type 1 ANSI S1.43-1997 Type 1, JIS C 1509-1: 2005 Class 1 |
| CE Marking (EMC Directive 2004/108/EC, Low Voltage Directive 2006/95/EC), WEEE Directives, Chinese RoHS (export model for China only) | |
| Measurement functions | Lp, Leq, LE, Lmax, Lmin, LN (1 to 99 %, 1 % Step: Minimum 5 values, calculated from Lp or Leq 1 s) |
| Measuring time | 10 s, 1, 5, 10, 15, 30 m, 1, 8, 24 h, and manual (maximum 24 h) |
| Measurement range | A-weighting: 25～138 dB, C-weighting: 33～138 dB Z-weighting peak sound level: 60～141 dB |
| Frequency range | 20 Hz to 20 kHz |
| Frequency weighting | A, C, and Z |
| Time weighting | F (Fast) and S (Slow) |
| Level range | Single range (dynamic range: 113 dB) |
| Sampling cycle | 20.8 μs (Lp, Leq, LE, Lmax, Lmin, Lpeak : sampling frequency: 48 kHz) 100 ms (LN ) |
| 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) |
| Store: Manual | Data for measurement results are stored manually in single address increments. |
| Number of data | Internal memory: max. 1000 sets |
| Auto (request NX-42EX function card) | 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 1 s Leq sampling cycle: 10 s, 1, 5, 10, 15, 30 ms, 1, 8, 24 h |
| Power requirements | Four IEC R6 (size AA) batteries (alkaline or rechargeable batteries) or external power supply |
| Dustproof / water-resistant | IP rating: IPX3 (except for microphone) |
| Dimensions / weight | Approx. 250 (H) x 76 (D) x 33 mm(D)/ Approx. 400 g (with batteries) |