Nor140 Sound Analyser

A precision hand held sound analyser designed for the most demanding users. With this analyser Norsonic set a new standard for sound level meters, covering the widest range of applications. The Nor140 is packed into the smallest real time analyser featuring sound recording present on the market today.

Noise source identification with markers and sound recording
Environmental noise
Building acoustics

Industrial hygiene
Product development
Quality control
Noise mapping

Noise mapping
Sound power
Speech intelligibility – STIPA
Vibration measurements
Noise Nuisance Recorder

Nor140 – Features

Sound recording onto exchangeable SD card
Level vs. Time with multispectrum function from 50ms resolution
Parallel detection of SPL, Leq, Lmin, Lmax, LE, Lpeak and 8 statistical values
Measurement of A-weighted levels simultaneously with either C- or Z-weighted levels
Parallel F, S or I time constants
Built-in random incidence correction and wind screen correction
Frequency analysis with 1/1 – or 1/3-octave bands in the 0.4 Hz – 20 kHz range.

8000 line FFT analysis with 1.46 Hz line resolution
120 dB dynamic range giving a “one-range” instrument covering all levels from microphone noise floor at 15 dB(A) to maximum SPL at 137 dB(A) (140 dB peak)
Pause/Continue function with 10 sec back erase function
High resolution backlit display
RPM input
Manual or automatic storage of results with automatic measurement repeat and clock synchronization
Building acoustics according to ISO 10052, ISO 140 & ISO 717 with on screen sound insulation indexes

Dual channel building acoustic analysis using two Nor140 controlled from CtrlBuild PC program hosted in the dual channel BA case Nor518
Noise generator
Reverberation time calculations
Support SweptSine measurement when used with CtrlBuild 1038/3 software
Advanced Trigger functions
Complies to all relevant IEC and ANSI Class 1 specifications
Both USB 2.0 and RS232 high speed digital interface
Wireless communication using Nor520 Bluetooth transceiver

Nor140 – Options

The Nor140 may be extended with a large selection of optional features, thereby allowing you to tailor the instrument to your specific requirements. Optional features may be ordered and installed at any time by just adding a new set of option codes.

Option 0 LTmax5, LeqI and Leq measurements according to German Standards
Option 1 1/1-octave real-time filters 0,5 – 16 000 Hz
Option 2 Reference spectrum comparison (require option 1)
Option 3 1/3-octave filter bands 0,4 – 20 000 Hz (require Option 1)
Option 4 Statistical calculations
Option 5 Parallel F, S, I time constants
Option 6 Basic time profile mode
Option 7 Enhanced time profile mode (require Option 6)
Option 8 Sound recording (require Option 6)
Option 9 Reverberation time calculation
Option 10 Internal noise generator with white and pink noise (signal cables not included)
Option 11 Complete building acoustic mode in accordance with ISO-10052 and ISO-140 series and sound insulation indexes calculated according to ISO-717/1 and ISO-7171/2 (require options; 1, 2, 3, 9 and 10)
Option 13 Speech Transmission Index mode. Calculates the STIPA-value according to IEC60268-16.. Incl. CD with excitation signal (Nor1034) (require option 1)
Option 14 FFT-mode
Option 15 Survey sound power mode for LwA measurements according to ISO 3746
Option 16 Trigger for global measurement based on clock, threshold and external signal
Option 17 Audiometer calibration
Option 18 Extended measurement range with the normal microphone (150 dB peak) including self noise compensation
Option 19 Extended noise monitoring features such as repeatable read-out

Nor140 – Specifications

Type of instrument:

Sound level meter IEC 61672-1, class 1, group X measuring exponential time-weighted levels, integrating-averaging levels and sound exposure levels. If 1/1 octave-band or 1/3 octave-band filters are installed, the instrument complies with IEC 61260 class 1. The instrument also complies with the previous standards IEC 60 651 type 1 and IEC 60804 type 1.

Dimensions (W x H x D):

75 x 210 x 30 [mm] 75 x 292 x 30 [mm] with microphone/preamplifier Weight incl. batteries: 410 g