Nor145 støymåler leveres med ½” forforsterker Nor1209 og ½” målemikrofon Nor1239.
Den er i samsvar med den siste revisjonen av følgende nasjonale og internasjonale standard inkludert endringer, alle type 1 / klasse 1; IEC 61672, IEC 61260, DIN 45657, ANSI S1.4, ANSIS1.11 og ANSI S1.43. Den er også i samsvar med de foreldede lydnivåmålerstandardene IEC 60651 og 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 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: ± 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.
Dimensons & weight
Dimensions: 235 x 82 x 29 mm (ex. preamplifier and microphone LxWxH)
Weight : 535 g (including preamplifier and microphone)
Accessories included (standard package)
Nor145, Precision Sound Analyser with A, C and Z weighting networks, Parallel time constants, Statistical calculation and time profiles.
Supplied with:
- Rechargeable battery pack
- Mains adaptor Nor345
- Carrying case Nor1340
- 32GB micro SD card
- USB cable
- Microphone Nor1239
- Preamplifier Nor1209
- Windscreen Nor1451
- Nor1051 NorConnect software
- NorVirtual – sound level meter emulation program
- Instruction manual
- 3 years warranty and calibration certificate
Nor145 kan brukes i mange mulighet applikasjoner.
