SOUND LEVEL METER:bp 2025
28Pages

P R O D U C T D ATA Hand-held Analyzer Types 2250 and 2270 for Types 2250-S, 2250-S-C, 2270-S and 2270-S-C Types 2250 and 2270 are innovative, hand-held analyzers from Brüel & Kjær. The analyzers’ easy, safe and clever design philosophy is based on extensive research. Type 2250 has won several awards for its excellent ergonomics and design. Both analyzers can host a number of applications including frequency analysis, logging, FFT, building acoustics and signal recording. Additionally, Type 2270 can simultaneously measure with two microphones, two accelerometers or one of each. All application modules can be ordered as part of a fully preconfigured instrument or separately at any time, as the need arises. The combination of application modules and innovative hardware makes these analyzers dedicated solutions for performing high-precision measurement tasks in environmental, occupational and industrial application areas. Together with Measurement Partner Field App, MP Cloud support and Measurement Partner Suite for post-processing, they provide a total solution for your measurement needs. Uses and Features Uses • Class 1 sound measurements to latest international standards • Environmental noise assessment and tone assessment (1/3-octave and FFT) • Loudness and noise rating measurements • Occupational noise evaluation • Reverberation time measurements (see BP 2190) • Building acoustics (see BP 2190) • Product quality control (see BP 2183) • Noise source identification using sound intensity (see BP 2341)* • Audiometer calibration • Real-time analysis in 1/1- and 1/3-octave bands • Analysis of logging profiles for broadband parameters and spectra • Vibration criteria measurements • Low-frequency building vibration according to ISO 8041:05 and DIN 45669 – 1:2010 – 09 • Whole-body and hand-arm human vibration measurements (RMS, MTVV and Crest Factor) • Infrasound (G-weighting) measurements according to ISO 7196:1995 and ANSI S1.42 – 2001 (R2011) • Hardware: – 2-channel measurement capability with any combination of microphones and accelerometers* – Large, high-resolution, touch-sensitive colour screen – Communication via USB, LAN and options for Wi-Fi or 4G communication – Integral digital camera for documentation and reference* – Automatic detection of and correction for windscreen – Robust and environmentally protected (IP44) • Software: – Dynamic range in excess of 123 dB(A) – 0.5 Hz – 20 kHz broadband linear range – Personalized measurement, display and job setup – ‘Smiley’ quality indicators with hints and warnings – Timers for automatic start of measurement – Measurement Partner Cloud (MP Cloud) – Measurement Partner Field App – Measurement Partner Suite for comprehensive postprocessing – GPS coordinates stored with measurement data – Simultaneous noise and weather data acquisition

Hardware and Applications Introduction Types 2250 and 2270 are flexible hand-held analyzers that cover all your sound and vibration measurement and analysis needs – from the traditional uses in assessing environmental and workplace noise to industrial quality control and development. The high-resolution touchscreen allows you to easily navigate through the setup menu tailoring one of the many predefined templates to precisely your measurement requirements. The large dynamic range copes with both the loudest noises and those just above the noise floor and the frequency range, extended with...

Fig. 1 Key features of Hand-held Analyzer Types 2250 and 2270 Microphone/Preamplifier Stage: • Falcon™ Range ½″ microphone and microphone preamplifier stage • The microphone preamplifier stage is able to drive an extension cable of up to 100 m, a valuable feature when a measurement requires remote location of the microphone Windscreen Sensor Stylus (stored) Navigation Pushbuttons: • Up/down, left/right arrow keys Camera (only available with Type 2270) Event Pushbutton: • For marking events Commentary Pushbutton: • Allows you to attach recorded messages to measurements Back Erase/Exclude...

enabled, spectra can be logged at the same rates. Logging (or noise profiling) is used to develop time histories for use in environmental noise as well as workplace noise assessment • Enhanced Logging Software BZ-7225 – continuously monitor and log periodic reports in addition to the features of Logging Software. Parameters such as Ldn and Lden are calculated • Signal Recording Option BZ-7226 – attach actual samples of the measured signal to your measurements using the actual measurement transducer • Enhanced Vibration and Low Frequency Option BZ-7234 – measure infrasound (G-weighting) and...

Measurement Partner Cloud (MP Cloud) Take advantage of cloud capability with Types 2250 and 2270. The analyzers can communicate with MP Cloud via WiFi, mobile connection or LAN (Ethernet). Upload your measurement data directly to MP Cloud for merging in Measurement Partner Suite with annotations collected with Measurement Partner Field App. Store your data safely and securely in MP Cloud and share Cloud archives with anyone on the planet. Post-processing Software Measurement Partner Suite BZ-5503, in its basic configuration, comes with your hand-held analyzer (see product data BP 2430). It...

Once connection is made to the analyzer, you are ready to start, stop and pause your measurement from a safe distance. During noise measurements, the instantaneous LAF profile is displayed on the field app. During vibration measurements, the Fast inst. profile is shown. Fig. 4 View and edit annotations collected with the field app This allows you to keep an eye on the status of your measurement without being close to the analyzer. This is particularly important when low noise levels are being measured such as for indoor measurements. MP Field App supports notes, voice commentary, image,...