The OB-300M combination 1/3-1/1 Octave Band Filter Set can measure 33 one-third octave bands or 11 standard full octave band measurements.
The OB-300M combination 1/3-1/1 Octave Band Filter Set can measure 33 one-third octave bands or 11 standard full octave band measurements. The filter set will manually or automatically sequence through each octave or 1/3 octave band and display the measured level on the sound level meter.
The OB-100M has the same automatic and manual features of the OB-300M except that measurements are made in full octave bands only.
Each filter set attaches easily to the 2800M sound level meter.
- ANSI S1.11 Order 3 and IEC R225
- OB-100M: 10 frequencies from 31.5 Hz to 16 kHz
- OB-300M: 33 frequencies from 12.5 Hz to 20 kHz in 1/3-octave steps, or in 11 frequencies from 16 Hz to 16 kHz in 1/1 octave steps
- Full manual control or automatic sequential stepping through each frequency band.
Sound Level Meter
- OB-100M: 3.3" x 2.8" x 1.8 (84 x 71 x 47 mm)
- OB-300M: 3.3" x 4.2" x 1.8 (84 x 107 x 47 mm)
- OB-100M: 6 oz. (170 g)
- OB-300M: 9 oz. (255 g)