Norsonic · Nor145 / Nor150 · Handheld sound level meter
Norsonic Nor145
CurrentSingle-channel Class 1 sound analyser with a 4.3-inch touchscreen, built-in WLAN, GPS and optional 4G/LTE modem for unattended logging and NorCloud reporting. Option packages add environmental logging, 1/1 and 1/3-octave analysis, FFT, reverberation time, building acoustics to ISO 16283 and STIPA. Frequency range extends to infrasound and ultrasound with options.
Replaced the Norsonic Nor140. Specifications verified on .
- Type
- Handheld sound level meter
- Class
- Class 1
- Channels
- 1
- Octave bands
- 1/1 and 1/3
- Connectivity
- WLAN, LAN, USB host, 4G/LTE modem (option Nor145/16, factory fitted), GPS, digital I/O
- Weight
- 535 g
- Battery life
- 8 h
Specifications
As published by Norsonic. Fields the manufacturer does not publish are omitted rather than estimated.
| Specification | Value |
|---|---|
| IEC 61672-1 class | Class 1 |
| Standards | IEC 61672-1:2013 class 1, IEC 61260-1 class 1, IEC 60651, IEC 60804, DIN 45657, ANSI S1.4, ANSI S1.11, ANSI S1.43, IEC 60268-16:2020 (STIPA), ISO 16283-1/-2/-3, ISO 717-1/-2, ISO 3382-2/-3, ISO 1996-1/-2 |
| Pattern approvals | PTB (Germany), LNE 37403-1 (France), METAS (Switzerland), BEV (Austria), CIM (Czech Republic), IPQ (Portugal), GUM (Poland) |
| Specification | Value |
|---|---|
| Channels | 1 |
| Measurement range | 17 to 137 dB(A) RMS, single 120 dB range |
| Peak range | 45 to 140 dB (C-weighted peak) |
| Frequency range | 0.4 Hz to 40 kHz (1/3 octave and FFT, with infrasound and ultrasound options); 6.3 Hz to 20 kHz standard |
| Frequency weightings | A, C, Z, B, G, U |
| Time weightings | F, S, I |
| Simultaneous weightings | Yes |
| Parameters | Leq, Lmax, Lmin, LE, Lpeak, LFTm5, Ln percentiles, Tmax5, LAeq-LCeq, up to 60 parameters logged in parallel |
| Specification | Value |
|---|---|
| Octave bands | 1/1 and 1/3 |
| Octave band filter class | class 1 (IEC 61260) |
| FFT | 8192 lines standard, 16384 lines with ultrasound option; 1.46 Hz resolution |
| Reverberation time | Yes |
| Building acoustics | Yes |
| Speech intelligibility | STIPA (option Nor145/17) |
| Audio recording | Yes |
| Specification | Value |
|---|---|
| Shortest logging interval | 5 ms |
| Memory | microSD, 64 GB included (tested to 512 GB) |
| Specification | Value |
|---|---|
| Microphone | 1/2" free-field Nor1239 with Nor1209 preamplifier, about 16 dB(A) self-noise; GRAS 47HC low-noise option |
| Detachable preamplifier | Yes |
| Outdoor microphone kit | Nor1217 (temporary) or Nor1216 heated (permanent) outdoor microphones |
| Weather sensors | Yes |
| Display | 4.3" colour touchscreen plus push keys |
| Battery | Replaceable Li-ion pack; 9 to 15 V DC input; Nor345C mains adapter |
| Battery life | 8 h |
| Weight | 535 g |
| Dimensions (mm) | 235 x 82 x 29 excluding microphone |
| Specification | Value |
|---|---|
| Connectivity | WLAN, LAN, USB host, 4G/LTE modem (option Nor145/16, factory fitted), GPS, digital I/O |
| Remote control | NorCloud, NorVirtual app, NorRemote (Android), internal web server, API option Nor145/15 |
| Software | NorCloud, NorConnect, NorVirtual, NorRemote, NorReview, Nor850 Suite |
| Latest firmware | 6.0.3025 (25 June 2026); release note v6.0.2920 (22 May 2026) |
Variants
| Variant | Difference |
|---|---|
| ENV Advanced | logging profile B, moving profile, impulsivity detection, infrasound, multi-trigger audio, IP camera |
| BA Basic / BA Advanced | reverberation time, signal generator, ISO 16283 and national building acoustics ratings |
| Consultant Advanced | all ENV and BA features plus FFT |
Where this data comes from
| Kind | Document | Accessed |
|---|---|---|
| Product page | Nor145 Sound Level Meter | |
| Datasheet | Nor145 / Nor150 brochure EN, March 2026 | |
| Firmware notes | Release note v6.0.2920 Nor145/Nor150, May 2026 |
Verified on . Only the manufacturer’s own published material is used; distributor pages are not sources.
Spec out of date? Tell us (reference norsonic-nor145).
Verified owner reviews
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Known issues and firmware notes
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Feature requests
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Read next
- How to choose a sound level meter · Class 1 vs class 2, integrating vs non-integrating, parameters by application, options and licences, calibration.
- Class 1 vs class 2 sound level meters · IEC 61672-1 tolerances, what the classes do and do not say, and where each is typically required.
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