ittil |«u Vr/ HOTTINGER BRUEL & KJ/ER PRODUCT DATA 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 with an easy safe and clever design philosophy that 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 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) Features • 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 Suite for comprehensive post-processing - GPS coordinates stored with measurement data - Simultaneous noise and weather data acquisition - 24- or 16-bit recording during all or parts of measurement

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 the...

Fig. 1 Key features of Hand-held Analyzer Types 2250 and 2270 Microphone/Preamplifier Stage: •Falcon™ Range /" 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 Navigation Pushbuttons: •Up/down, left/right arrow keys Event Pushbutton: • For marking events Back Erase/Exclude Pushbutton: •Allows you to erase the last 5 s of data •Mark logged data with an exclude marker Start/Pause Pushbutton: • Press to start a measurement...

Post-processing Software Fig. 2 Secure access to measurement data from anywhere Fig. 3 Measurement Partner Suite BZ-5503 2250/2270 Hand-held Analyzer SD WLAN Measurement Partner Suite (PC) Direct connecƟon: USB, LAN or modem 150077/2 Remote Internet Communication Access your data from anywhere by using various technologies. Type 2250/2270 can operate via Wi-Fi, modem communication (for example, 3G) or LAN (Ethernet). Measurement Partner Suite BZ-5503, in its basic configuration, comes with your hand-held analyzer (see product data BP 2430). It is the Brüel & Kjær data viewing and post-processing...

2-channel Measurement Option - BZ-7229 2-channel Option BZ-7229 adds an extra measurement channel to Hand-held Analyzer Type 2270 and is a standard application included on all new Type 2270 analyzers. The two channels accept inputs from the same type of transducer (for example, two microphones) or different transducers (for example, one microphone and one accelerometer.) 2-channel functionality is available for the following modules: Sound Level Meter Software BZ-7222, Frequency Analysis Software BZ-7223, Logging BZ-7224, Enhanced Logging BZ-7225 and Building Acoustics Software BZ-7228. BZ-7229...

computed in parallel with the analysis. Spectral analyses can be documented using notes and voice annotations. Simple difference calculations are available between channels when transducer type and weightings are compatible. For a measured spectrum, single-number parameters, such as Noise Rating, Speech Interference Level and Loudness, can be calculated and displayed for noise impact analysis and limit comparison. A programmable generator is available for measurements requiring a sound source. You can select white or pink noise and set the upper and lower limits. 2-channel Measurements with BZ-7223...

2-channel Measurement Logging Type 2270 users can log measurement data using both input channels with any combination of transducers: two microphones, two accelerometers or one of each. Tone Assessment Option – BZ-7231 Fig. 9 Performing an outdoor tone assessment measurement You can toggle between the two measurement channels on the analyzer display and can see both measurement channels on the same graph when the measurement data are transferred to Measurement Partner Suite BZ-5503 for post-processing. Fig. 8 Left: Single-channel logging display showing a LAeq profile with marker functionality...