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Norsonic · Nor140 · Handheld sound level meter

Norsonic Nor140

Current

Single-channel Class 1 sound analyser with a monochrome display, running on four AA cells, with numbered options for 1/1 and 1/3-octave filters, logging to 5 ms, audio recording, reverberation time, building acoustics, FFT and STIPA. Introduced before the Nor145 and still listed by Norsonic with 2024 firmware; a large installed base remains in consulting and legal-metrology use.

Specifications verified on .

Type
Handheld sound level meter
Class
Class 1
Channels
1
Octave bands
1/1 and 1/3
Connectivity
USB 2.0, RS-232, 3 digital inputs, 4 digital outputs, AC output (3.5 mm), Bluetooth via Nor520 transceiver
Weight
410 g
Battery life
8 h
Compare with other instrumentsAll handheld sound level meters

Specifications

As published by Norsonic. Fields the manufacturer does not publish are omitted rather than estimated.

Standards and class — Norsonic Nor140
SpecificationValue
IEC 61672-1 classClass 1
StandardsIEC 61672-1 class 1, IEC 61260-1 class 1, ANSI S1.4, ANSI S1.11, DIN 45657, IEC 60268-16 ed. 5 (STIPA, option 13), ISO 16283-1/-2/-3, ISO 717-1/-2, ISO 3382-2, ISO 1996-1/-2
Pattern approvalsPTB (Germany), METAS (Switzerland), LNE 24006 rev. 2 (France), BEV Z 1522-08 (Austria)
Measurement — Norsonic Nor140
SpecificationValue
Channels1
Measurement rangeabout -10 to 137 dB at 50 mV/Pa, single 120 dB range (147 dB with option 18)
Peak range140 dB peak standard; 150 dB with option 18
Frequency range0.5 Hz to 16 kHz (1/1 octave, option 1); 0.4 Hz to 20 kHz (1/3 octave, option 3)
Frequency weightingsA, C, Z
Time weightingsF, S, I
Simultaneous weightingsNo
ParametersSPL, Leq, Lmin, Lmax, LE, Lpeak, LN (8 values), LeqI, LEI, LTmax5
Analysis — Norsonic Nor140
SpecificationValue
Octave bands1/1 and 1/3
Octave band filter classclass 1 (IEC 61260), options 1 and 3
FFT8000 lines, 1.46 Hz resolution (option 14)
Reverberation timeYes
Building acousticsYes
Speech intelligibilitySTIPA (option 13)
Audio recordingYes
Logging and data — Norsonic Nor140
SpecificationValue
Shortest logging interval5 ms (option 7); 1 s standard (option 6)
MemoryAbout 25 MB internal flash plus SD card (included)
Hardware — Norsonic Nor140
SpecificationValue
Microphone1/2" free-field Nor1225, 50 mV/Pa, with Nor1209 preamplifier (7-pin LEMO); 0 or 200 V polarisation
Detachable preamplifierYes
Outdoor microphone kitNor1217 outdoor microphone protection
DisplayMonochrome transflective backlit LCD, 160 x 240
Battery4 x AA (LR6); 11 to 16 V DC external
Battery life8 h
Weight410 g
Dimensions (mm)210 x 75 x 30 (292 with microphone and preamplifier)
Operating temperature (°C)-10 to 50
Connectivity and software — Norsonic Nor140
SpecificationValue
ConnectivityUSB 2.0, RS-232, 3 digital inputs, 4 digital outputs, AC output (3.5 mm), Bluetooth via Nor520 transceiver
Remote controlNorCloud login
SoftwareNor850 Suite, NorCloud, CtrlBuild, NorBuild (Nor1028)
Latest firmware4.0.1550 (listed 14 March 2024)

Where this data comes from

Manufacturer documents used for this record
KindDocumentAccessed
Product pageNor140 Sound Level Meter
OtherNorsonic product range 2024-2025
Approval certificateLNE 24006 rev. 2 type approval, Nor140

Verified on . Only the manufacturer’s own published material is used; distributor pages are not sources.

Spec out of date? Tell us (reference norsonic-nor140).

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Known issues and firmware notes

Hardware and firmware problems reported by owners, with the firmware version concerned and any manufacturer response.

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Feature requests

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