Nor145 sound level meter with a 4.3” large true colour touchscreen, to serve you a user-friendliness that we know from our smartphones. Further features of the Nor145 is a 3G/4G LTE modem, GPS, onboard voice and text note editor, and connected to your smartphone via the NorVirtual App you have full remote access to your instrument and can take photos and voice notes that are seamless transferred and integrated with markers to your noise data. Nor145 can also be controlled via NorCloud, Nor850 software, NorRemote and NorVirtual for PC. NorConnect is the tool you use to download, view and generate excel reports of your measurements.
All these features do make the Nor145 the perfect tool box for in-situ field measurements.
The Nor145 can be used in the following cases:
- Building acoustics
- Environmental noise (NorCloud)
- Product noise testing
- Noise in the workplace
- Noise nuisance recorder
- Single Front end for Nor850
- General noise and vibration measurements
The Nor145 Precision Sound and Vibration Analyser is supplied with ½” preamplifier Nor1209 and the ½” measurement microphone Nor1227. It conforms to the latest revision of the following National and International standard including amendments, all type 1 / class 1; IEC 61672, IEC 61260, DIN 45657, ANSI S1.4, ANSIS1.11, and ANSI S1.43. It also conforms to the obslote sound level meter standards IEC 60651 and IEC 60804.
Simultaneous measurement of SPL, Leq, LeqI, LMax, LMin, LE, LEI, LPeak, Ln and Tmax5.
Time weighting functions: Fast, Slow and Impulse (Simultaneous).
Spectral weighting functions: A, C and Z – weighting (Simultaneous).
Frequency analysis: 1/1 and 1/3 octave real time filters from 0,4 Hz to 20 kHz.
Statistical calculations: 8 individual adjustable percentiles from L0,1% to L99,9%, The statistical calculations are performed in real time within each frequency band and for each profile period if period length is set longer than 2 minutes. Class width is 0,2dB. Dynamic range is 130dB.
Overall measurement duration: 1 sec – 7 days. (If set to Repeat or Synchro mode a new measurement will be started automatically, with no time gap between each measurement.).
Time profile A resolution: 5 ms – 24 hours including full frequency spectra. From 1 sec if profile B or Moving is enabled.
Time profile B and Moving resolution: 1 s – 24 hours. A, C and Z – no frequency spectra.
Back erase in Pause mode: 0-20 sec free delectable graphical back erase.
Sampling rate: 48 kHz.
Frequency resolution: 1.46 Hz or 2.92 Hz (FFT size 8192 or 16384 lines).
Upper frequency: 22kHz
Functions: Auto spectrum, linear averaging.
Acquisition rate: ~700 ms – no overlap.
Display: Dynamic display zoom 1 – to 64 in power-of-two steps.
Time windowing: Hanning
12 and 48 kHz sampling rate / 8 , 16 and 24 bits / 0-120 sec pre-trigger.
One range covering 120dB without any range adjustments.
Self noise measured with 1/2” microphone with a nominal sensitivity of 50mv/Pa: 17 dBA.
Maximum RMS level 137 dBA, Maximum Peak level 140 dB PeakC.
Built in noise generator with Sine, White, Pink and 1/1 and 1/3 octave band passed filtered noise.
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