model |
NL-52AEX |
Measurement function *Simultaneous measurement with selected time weighting and frequency weighting |
Computation (main channel) |
time-weighted sound level Lp time-average sound level Leq sound exposure level LE maximum time-weighted sound level Lmax minimum time-weighted sound level Lmin time-rate sound level LN (05, 10, 50, 90, 95) up to 5 |
Computation (sub ch) |
Time-weighted sound level Lp |
addition operation |
C-weighted time average sound level LCeq C -weighted peak sound level LCpeak Z-weighted peak sound level LZpeak I-weighted time averaged sound level LAIeq (NX-42EX required separately) Maximum value of I-weighted time average sound level LAImax (NX-42EX is required separately) Frequency characteristics of additional calculation are linked to frequency characteristics of sub-ch. (LZpeak) can be selected |
Operation time |
10 seconds, 1, 5, 10, 15, 30 minutes, 1, 8, 24 hours and any time can be manually set Manual calculation time: up to 24 hours |
microphone |
model |
UC-59 |
sensitivity level |
-27dB |
Measuring level range |
A-weighted 25 dB to 138 dB C-weighted 33 dB to 138 dB Z-weighted 38 dB to 138 dB C-weighted peak sound level 55 dB to 141 dB Z-weighted peak sound level 60 dB to 141 dB |
Self-noise level |
A-weighted |
17 dB or less |
C characteristic |
25 dB or less |
Z-characteristic |
30 dB or less |
Measurement frequency range |
10 Hz to 20 kHz |
Frequency weighting characteristic |
A, C and Z characteristics |
time weighting characteristics |
F (Fast) and S (Slow) |
Bar graph display range |
Up to 110dB (20-130dB) |
Switch bar graph display |
Set the upper and lower limits of the bar graph in 10 dB steps |
sampling period |
Lp, Leq, LE, Lmax, Lmin, Lpeak: 20.8 μs (sampling frequency 48 kHz) LN: 100 ms (0.1s) |
store |
manual |
Manually record measurement results one address at a time |
Number of manual recording data |
Internal memory: Up to 1000 data sets SD card: Depends on SD card capacity |
Auto (NX-42EX is required separately) |
Automatic continuous recording of instantaneous values (Lp mode) at set times and calculated values (Leq mode) at set times |
Auto Lp store cycle |
1100ms (0.1s), 200ms (0.2s), 1s, Leq 1s |
Auto Leq calculation cycle |
10 seconds, 1, 5, 10, 15, 30 minutes, 1, 8, 24 hours |
Auto measurement time |
Up to 1000 hours (depending on SD card capacity) |
Waveform recording (NX-42WR is required separately) |
file format |
Uncompressed waveform WAVE file |
sampling frequency |
Select from 48 kHz, 24 kHz, 12 kHz |
Data length |
Select from 24 bit or 16 bit |
output |
DC output |
Outputs a DC signal corresponding to the frequency weighting characteristics and time weighting characteristics selected by calculation |
DC output voltage |
2.5 V, 25 mV/dB at bar graph display full scale |
AC output |
Interlocks with the frequency weighting characteristics selected in the calculation, and outputs an AC signal with the frequency weighting characteristics selected from A, C, and Z |
AC output voltage |
1 Vrms (rms value) at bar graph display full scale |
Comparator output (NX-42EX is required separately) |
Open collector output (maximum applied voltage 24 V, maximum current 60 mA, power dissipation 300 mW) turns ON when the set level is exceeded |
USB |
Can be connected to a computer and recognized as a removable disk Can be controlled by communication commands |
RS-232C communication |
RS-232C communication is possible by using a dedicated cable |
power supply |
4 AA batteries (alkaline or rechargeable) or external power supply |
Operating time (23°C) |
Alkaline battery LR6: 26 hours Ni-MH secondary battery: 25 hours *Operating time varies depending on settings |
AC adapter |
NC-98E |
External power supply voltage |
5 to 7 V (rated voltage 6 V) |
current consumption |
90 mA (normal operation, at rated voltage) |
power consumption |
Approx. 3 W (during normal operation, when using AC adapter, 100 V side) |
Dustproof and waterproof performance |
IP grade: IP54 (excluding microphone) See notes on waterproofing |
size and weight |
Approximately 250 mm (H) x 76 mm (W) x 33 mm (D) ・ Approximately 400 g (including batteries) |
accessories |
Storage case x 1, windscreen WS-10 x 1, windscreen drop prevention rubber x 1, strap x 1, AA batteries (alkaline) x 4, SD card 512 MB |