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,  and NorVirtual for PC. NorConnect is the tool you use to download, view and generate excel reports of your measurements.

Applications

• Building acoustics with on board rating
• Environmental noise assessment
• Environmental noise monitoring (NorCloud)
• Room acoustics – STIPA
• Product noise testing
• Noise in the workplace
• Infrasound
• Noise nuisance recorder
• Single Front end for Nor850
• General noise and vibration measurements
• Class 1 Precision sound level meter and frequency analyser.
• Easy connectivity via built in WLAN and 3G/4G LTE modem.
• Large colour touch-screen (4.3”).
• Real push keys for quick operation in challenging environments.
• Intuitive user interface with graphical icons for selection of measurement mode and custom-made user setups.
• On board Building Acoustic rating and evaluation.
• Seamless integration with NorCloud and Nor850.
• Voice, text notes and built-in GPS for documentation of the measurements.
• Wide frequency range (0,4 Hz – 20 kHz in 1/3 octave band).
• Parallel 1/3 octaves and FFT analysis.
• 120 dB measurement range.
• dB and engineering units (m/s² and m/s).
• Extensive trigger system for reports, audio recording and camera.
• Easy management of measurement files in NorConnect Nor1051.
• Multi language support.
• Extensive on-board help system.
• Easy remote control via smartphone.
• Type approved by PTB – Germany, LNE – France,  METAS – Switzerland, BEV – Austria

Features

• Class 1 Precision sound level meter and frequency analyser.
• Easy connectivity via built in WLAN and 3G/4G LTE modem.
• Large colour touch-screen (4.3”).
• Real push keys for quick operation in challenging environments.
• Intuitive user interface with graphical icons for selection of measurement mode and custom-made user setups.
• On board Building Acoustic rating and evaluation.
• Seamless integration with NorCloud and Nor850.
• Voice, text notes and built-in GPS for documentation of the measurements.
• Wide frequency range (0,4 Hz – 20 kHz in 1/3 octave band).
• Parallel 1/3 octaves and FFT analysis.
• 120 dB measurement range.
• dB and engineering units (m/s² and m/s).
• Extensive trigger system for reports, audio recording and camera.
• Easy management of measurement files in NorConnect Nor1051.
• Multi language support.
• Extensive on-board help system.
• Easy remote control via smartphone.
• Type approved by PTB – Germany, LNE – France,  METAS – Switzerland, BEV – Austria

Specifications:

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.

Measured Parameters 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 0,2 dB. Dynamic range is 130dB.

Measurement control

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.

Audio recording 12 and 48 kHz sampling rate / 8 , 16 and 24 bits / 0-120 sec pre-trigger.

Measurement range: 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.

Noise Generator Built in noise generator with Sine, White, Pink and 1/1 and 1/3 octave band passed filtered noise.

Reverberation Time Parallel calculation of T15, T20 and T30 in addition to Tmax for Noise excitation and EDT for impulse excitation.

FFT

Sampling rate: 48 kHz.
Frequency resolution: 1.46 Hz or 2.92 Hz (FFT size 8192 or 16384 lines).
Upper frequency: 22 kHz
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

Display 4,3” colour display capacitive touch. Protected by an anti-smudge coated and scratch-proof glass.

GPS

Built in GPS

Support for external IP camera. With an external IP camera, you can make event triggered pictures. Pictures captured during a measurement is marked as events in the L/t graph and can be viewed on the Nor145, in NorCloud or in NorReview.

Datastorage / Datatransfer

Storage modes: Manual, Auto, Repeat and Synchro. Synchro synchronise the start of the next measurement to the next full hour.
Internal memory: 350 MB – not used for measurement storage.
Micro SD card: Supports XC and HC standard. No limitation in max. SD card size.
Data transfer via LAN and USB.
Optionally built in GPRS – 3G/UMTS – 4G/LTE and Wifi infrastructure and hotspot.
Internal antenna supports 3G/4G. External antennas with diversity may be connected. External antenna supports also GPRS connection.

Inputs

Microphone input: One microphone input. Supports standard 7 pin Lemo preamplifiers including SysCheck, Microphone heating, TEDS and IEPE.

Polarization voltage: 0.

Preamplifier voltage is ± 15V

Comment microphone: Via 3,5 pin mini jack.

Analogue outputs

AC out, 100mV full scale on 15 pin I/O socket.

3 pin mini jack headphone socket for replay of voice notes, listen to microphone AC signal or replay of audio recordings. Comment microphone for voice notes is connected to same plug.

Signal generator on 15 pin I/O socket with Pink, White, Bandpass filtered, sine and impulse noise.

Power

Rechargeable 7 Ah Li-Ion batteries with built in fuel gauge.
External power: 9 – 15Vdc 3-5Watt.

Typical battery lifetime: 8 hours.

Dimensions (ex. preamplifier and microphone LxWxH): 235 x 82 x 29 mm.
Weight (including preamplifier and microphone): 535 g.

Accessories included (standard package)

Nor145, Precision Sound Analyser with A, C and Z weighting networks, Parallel time constants, Statistical calculation and time profile A.

Supplied with:

• Rechargeable battery pack
• Mains adaptor Nor345
• Carrying case Nor1346
• 32GB micro SD card
• USB cable Nor4525
• Microphone Nor1227
• Preamplifier Nor1209
• Windscreen Nor1451
• Instruction manual
• 3 years warranty and calibration certificate
• Nor1051 NorConnect software for file transfer & measurement view
• NorVirtual – sound level meter emulation program

Accessories not included

• Spare parts as spare battery, windscreens etc.
• Accessories like cables and outdoor microphones
• Post processing software as Nor850 and NorReview
• Accredited calibration from NCL
• Extended warranty