DataHand Professional II Manuel d'utilisateur

PRODUCT DATAHand-held Building Acoustics Analyzer Types 2250 and 2270 with Building Acoustics Software BZ-7228Building Acoustics is the assessment of

10Fig. 15 Accessories for building acoustics measurementsAccredited Calibration Services at Brüel& KjærEnsure traceable measurement history from d

11Specifications – Type 2250/2270MicrophoneSUPPLIED MICROPHONEType 4189: Prepolarized Free-field ½″ MicrophoneorType 4190: Free-field ½″ MicrophoneNom

1240°C charging time will be prolonged. With external charger ZG-0444 (optional accessory), typically 5 hoursNOTE: It is not recommended to charge the

13Linear Operating Range: In accordance with IEC 61672, A-weighted: 1kHz: Single Range: 24.8 to 140 dBHigh Range: 43.0 to 140 dBLow Range: 24.8 to 110

14Measurement Control Measurement Sequence: Supports measuring:• at all microphone positions before using another source• at a microphone position for

15Specifications – PULSE Reflex Building Acoustics Type 8780PULSE Reflex Building Acoustics is the software package for post-processing and reporting

HEADQUARTERS: Brüel &Kjær Sound & Vibration Measurement A/S · DK-2850 Nærum · DenmarkTelephone: +45 7741 2000 · Fax: +45 4580 1405 · www.bksv.

2The Hand-held AnalyzersFig. 1 Hand-held Analyzers Type 2250 and 2270 Types 2250 and 2270 are robust, hand-held anayzerplatforms designed to host a wi

3The sound level depends on the position in the rooms, so several microphone positions are used to measurethe average of the source room level, L1, th

4Press the Save pushbutton to save the measurement (see Fig. 5, right). You are now ready to measure atposition 2.Fig. 6 Left: Typical 2-channel inspe

5Fig. 8 Reverberation time spectrum (left); reverberation decay curve (centre); andoverview of results (right)NOTE: A dedicated Reverberation Time Sof

6Other TasksFaçade Sound InsulationFaçade sound insulation is a variant of airborne sound insulation, with its own standards. The “source room”is the

7Fig. 11 Typical building acoustics project using Type 8780. Data are presented graphically and numerically with detailed data quality indications, us

8Reviewing and Reporting using Qualifier Type 7830Fig. 14 Typical building acoustics project using Type 7830With Qualifier Type 7830, youcan view, rec

9Table2 Calculated parametersComplete SystemBrüel & Kjær provides a wide range of accessories to help you build a complete building acousticsmeas