1/3 Octave Band Sound Level Meter

Type 1 to IEC 60651, IEC 60804 and ANSI S1.4 IEC 61672-1:2003 Class 1 Simultaneous Leq, SPL, Lmax,  and Peak, Ln's. "A", "C" and "Z" (flat from 10 Hz to 20 kHz ± 1.5 dB) frequency weightings. Octave and Third Octave band filters. RMS "Fast" and "Slow" time weightings. Clear graphical display with backlight. Rugged cast aluminum case Seven Measurement ranges, covering: 21 to 140 dB(A), Peak 143 dB(C) Octave Bands: 19 dB(Z) to 140 dB(Z) 1:3 Octave Bands: 14 dB(Z) to 140 dB(Z) Noise floors 18 dB(A) Octave Bands: 12 dB(Z) @ 1 kHz band. 1:3 Octave Bands: 7 dB(Z) @ 1 kHz band. Powered by two AA cell batteries. Dimensions: 13.3" x 2.9" x 0.9", 15.8 ounces 340mm x 75mm x 25mm, 450g Measurements stored for transfer to computer using the software provided. Available in a weatherproof Outdoor Measurement Kit

The CR831B is the most powerful instrument in the range, offering 1/3 octave band filters and data logging. The instrument is designed to meet the demanding requirements for environmental noise measurement as well as satisfying the need to measure industrial noise. For the acoustic professional this instrument offers everying in a single hand held instrument.

Deaf Defier Software

The Deaf Defier software and download cable are provided at no extra cost with the CR:831B. Click here for more information.

Additional Documentation

• CR:800B Series Datasheet (PDF, 912k)
• Deaf Defier Software Datasheet (PDF, 343k)
• Acoustic Calibrator Datasheet (PDF, 711k

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