Fonometro Classe 1 integratore

The Bruel & Kjaer 2238 Mediator is the modern interpretation of the classic sound level meter. The many talents of the Bruel & Kjaer 2238 come fully into play by installing software modules which transform the instrument into a dedicated solution for measurement tasks in the environmental, occupational and industrial application fields. All Mediators come with Basic Sound Level Meter Software installed, and other functions like statistics, logging and frequency analysis are added through easily installed software options − or you get exactly what you need installed from the factory.

The Bruel & Kjaer 2238's hardware comes with two independently frequency weighted detectors. These can be used for RMS/Peak measurements or as two RMS detectors in parallel. All time weighted parameters (using F, S and I time constants) can be computed in parallel. A standard 2 Mbytes of memory is available for storing data. All versions can be fully controlled via the serial interface. Effects of sound incidence (frontal or random) can be corrected by a built-in filter, as can the effects of a windscreen, thus giving you Class 1 precision in all situations.

• Dynamic Range: 80 dB, adjustable to give full-scale readings from 80 to 140 dB in 10 dB steps
• Max. Peak Level: 3 dB above full scale reading
• Upper Limit (RMS) for Crest Factor = 10: 17 dB below full scale reading
• Pulse Range: 83 dB
• Linear operating ranges (broadband): For the individual level ranges, at 1 kHz, the nominal upper boundary level minus the lowest sound pressure level measurable with a noise margin of 5 dB.