HBK 2255 Sound Level Meter
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HBK 2255 Sound Level Meter - 1

ittil |«u Vr/ HOTTINGER BRUEL & KJ/ER PRODUCT DATA HBK 2255 Sound Level MeterAn advanced, easy-to-use class 1 sound level meter Whether measuring environmental noise from a new motorway, determining the sound power of a new product, or testing sound insulation between apartments, today's acoustic professionals need a sound level meter that is powerful and flexible, but also efficient, reliable and easy-to-use. That is what HBK 2255 delivers. This robust, class 1 sound level meter puts advanced functionality, ease-of-use and versatility into the palm of your hand together with the reliability and confidence that is ensured with the HBK brand. HBK 2255 works seamlessly with a range of apps, each providing a complete solution for a specific job-to-do. Accurate acoustic measurement, analysis and documentation has never been so simple. Uses • Noise measurements requiring IEC 61672-compliant instrumentation • Basic broadband noise measurements with Noise Partner • Environmental noise assessments with Enviro Noise Partner • Occupational noise assessments with Work Noise Partner • Free-field sound power determination according to ISO 3744 or ISO 3746 and toy noise measurements according to EN 71-1with Product Noise Partner • Sound insulation tests according to national and international standards with Building Acoustics Partner • Integrate type-approved sound level measurement data into other systems with Open Interface BZ-7400 Features • Single measurement range: 22.71 - 140.6 dB(A) from noise floor to maximum level 16 GB internal storage Automatic measurement transfer to network or USB storage media for backup and analysis Robust design for indoor and outdoor measurements (IP 54) Wireless connectivity for remote control of measurements and data transfers Simplified user interface using either the sound level meter or your iOS mobile device • GPS for time and position Calibrator auto-detection Windscreen auto-detection and compensation TEDS support Removable preamplifier Lightweight Weather station support Open programming interface Analysis-quality audio recordings (with the optional BZ-7451 licence) 15.8 dB(A) is the typical noise floor for Microphone Type 4966

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HBK 2255 Sound Level Meter is a complete package solution that includes the Noise Partner app for both mobile measurement control, display and data transfer and as a PC-based application for analysis and documentation. TEDS (transducer electronic data sheet) support makes it easy to use HBK 2255 with multiple microphones. The sound level meter automatically detects the attached microphone and configures itself accordingly. Smart accessories The complete solution: HBK 2255 Sound Level Meter and the Noise Partner app installed on a mobile device and PC From tripods, calibrators, mobile phone...

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* With preamplifier or extension cable connected to the top socket

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Input settings CORRECTION FILTERS The software is able to correct the frequency response to compensate for sound field and accessories Calibration Initial calibration is stored for comparison with later calibrations SELF-GENERATED NOISE LEVEL Typical values at 23 °C for nominal microphone open-circuit sensitivity Analysis - Setup mode: SLM DETECTORS Parallel detectors on every measurement

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BROADBAND PARAMETERS X = frequency weightings A, B, C or Z, up to three weightings in parallel Y = time weightings F or S AUDIO Analysis-quality audio recording is enabled with the BZ-7451 licence. SPECTRUM PARAMETERS 1/1-octave only, 1/3-octave only or both 1/1- and 1/3-octave frequency analysis X = frequency weightings A, B, C or Z, up to two weightings in parallel Y = time weightings F or S Analysis - Setup mode: Building Acoustics The Building Acoustics setup mode is enabled with the BZ-7350 licence. Note: Measurements can be made with or without connection to the Building Acoustics...

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Hardware interface * Statistics, frequency analysis, audio recordings, and logging features are only available with additional software licences installed.

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Wireless communication interface OPERATING FREQUENCY START-UP TIME Standards NOTE: The international IEC standards are adopted as European standards by CENELEC. When this happens, the letters IEC are replaced with EN and the number is retained. The instrument also conforms to these EN standards Wired communication interface The sound level meter part of HBK 2255 conforms to the following national and international standards and classes/types/groups with the standard accessories and configurations: * Frequency analysis features are only available with additional software licences installed....

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Ordering information Firmware variants HBK2255 has three firmware variants. In countries where a WELMEC-compliant instrument is required for legal metrology (currently Germany and Spain), the WELMEC firmware variant for that country should be selected. For all others who require a type-approved SLM, the standard variant should be suitable FW-2255-000 General type-approved firmware (standard) FW-2255-001 WELMEC type-approved firmware, Germany FW-2255-002 WELMEC type-approved firmware, Spain For more information on HBK2255 firmware variants and versions, go to www.bksv.com/2245-2255-updates....

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Building acoustics kits Accessories available separately INTERFACING HARDWARE UL-1073 4.7" App Control Unit, 32 GB AO-0846 USB-C to AC or DC Output Cable, with power AO-0414 Microphone extension cable, up to 30 m UA-0049 Rigid microphone extension rod CALIBRATION HARDWARE 4231 Sound Calibrator Note: The case for HBK 2255 has storage space for Type 4231 MOUNTING HARDWARE UA-0750 Tripod HBK service products ACCREDITED CALIBRATION SLM-STD-CAI Initial Accredited Calibration incl. microphone (according to IEC 61672) SLM-STD-CAF Accredited Calibration incl. microphone (according to IEC 61672) For...

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© Hottinger Brüel&Kjær A/S. All rights reserved. 2023-10 BP 2679 – 14 hbkworld.com · info@hbkworld.com Local representatives and service organizations worldwide Although reasonable care has been taken to ensure the information in this document is accurate, nothing herein can be construed to imply representation or warranty as to its accuracy, currency or completeness, nor is it intended to form the basis of any contract. Content is subject to change without notice – contact HBK for the latest version of this document. Brüel & Kjær and all other trademarks, service marks, trade names, logos...

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