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HBK (Brüel & Kjær) · 2250 series hand-held analyzers · Handheld sound level meter

B&K 2270

Discontinued

Two-channel Class 1 hand-held analyser on the same platform as the 2250, accepting any combination of microphones and accelerometers. Adds two-channel building acoustics and sound intensity to the 2250 software modules. HBK states that the 2250 series is being transitioned to the B&K 2245 and HBK 2255 families; the 2270 remains widely used for building acoustics.

Specifications verified on .

Type
Handheld sound level meter
Class
Class 1
Channels
2
Octave bands
1/1 and 1/3
Connectivity
USB 2.0 (OTG Micro-AB and Standard-A), LAN (RJ45, 100 Mbit/s), WiFi via UL-1050/UL-1019 adapter, USB modem (GPRS/EDGE/HSPA)
Weight
650 g
Battery life
10 h
Compare with other instrumentsAll handheld sound level meters

Specifications

As published by HBK (Brüel & Kjær). Fields the manufacturer does not publish are omitted rather than estimated.

Standards and class — B&K 2270
SpecificationValue
IEC 61672-1 classClass 1
StandardsIEC 61672-1:2013 class 1, IEC 60651 type 1, IEC 60804 type 1, DIN 45657, ANSI S1.4 type 1, ANSI/ASA S1.4-2014 class 1, ANSI S1.43 type 1, IEC 61260-1:2014 class 1 (BZ-7223), ANSI/ASA S1.11-2014 class 1 (BZ-7223), ISO 7196:1995 (infrasound), ISO 8041:2005 (vibration)
Measurement — B&K 2270
SpecificationValue
Channels2
Measurement rangeabout 16.6 to 140 dB(A) dynamic range with Type 4189; primary display range 23.5 to 122.3 dB(A)
Linearity range24.8 to 139.7 dB(A) at 1 kHz (IEC 61672); 21.4 to 140.8 dB(A) (IEC 60804)
Peak range42.3 to 142.7 dB (C-weighted peak at 1 kHz)
Frequency range0.5 Hz to 20 kHz broadband; 1/3-octave 6.3 Hz to 20 kHz (0.8 Hz with low-frequency option)
Frequency weightingsA, B, C, Z, G
Time weightingsF, S, I
ParametersLXeq, LXE, Lmax, Lmin, LN statistics, Ldn, Lden, Lday, Levening, Lnight, NR, RC, NC, NCB, SIL, loudness, tonal assessment (Kt, dLta, Lpt)
Analysis — B&K 2270
SpecificationValue
Octave bands1/1 and 1/3
Octave band filter classclass 1 (IEC 61260-1:2014) with BZ-7223
FFTBZ-7230 FFT option (line count not stated in BP 2029)
Reverberation timeYes
Building acousticsYes
Audio recordingYes
Logging and data — B&K 2270
SpecificationValue
Shortest logging interval100 ms fast logging (10 ms for LAF); 1 s standard
Memory512 MB internal flash; two SD/SDHC slots (up to 32 GB); USB stick
Hardware — B&K 2270
SpecificationValue
Microphone1/2" prepolarised free-field, Type 4189, 50 mV/Pa (Types 4190 and 4966 alternatives)
Detachable preamplifierYes
Display240 x 320 transflective backlit colour touchscreen
BatteryLi-ion pack QB-0061, 3.7 V, 5200 mAh
Battery life10 h
Weight650 g
Dimensions (mm)300 x 93 x 50 including preamplifier and microphone
Operating temperature (°C)-10 to 50
Connectivity and software — B&K 2270
SpecificationValue
ConnectivityUSB 2.0 (OTG Micro-AB and Standard-A), LAN (RJ45, 100 Mbit/s), WiFi via UL-1050/UL-1019 adapter, USB modem (GPRS/EDGE/HSPA)
Remote controlMeasurement Partner Field App, Measurement Partner Cloud
SoftwareMeasurement Partner Suite (BZ-5503), Sound Level Meter BZ-7222, Frequency Analysis BZ-7223, Logging BZ-7224, Enhanced Logging BZ-7225, Signal Recording BZ-7226, Reverberation Time BZ-7227, Building Acoustics BZ-7228, Two-channel option BZ-7229, FFT BZ-7230, Tone Assessment BZ-7231, Noise Monitoring BZ-7232, Sound Intensity BZ-7233

Variants

Variants of the B&K 2270 as the manufacturer names them
VariantDifference
2270-Sstandard sound configuration
2270-Wvibration measurement configuration

Where this data comes from

Manufacturer documents used for this record
KindDocumentAccessed
DatasheetProduct Data BP 2029, Hand-held Analyzer Types 2250 and 2270
Product pageB&K 2250 series page (transition statement)

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

Spec out of date? Tell us (reference hbk-2270).

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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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