Extech 407764 Type 2 Sound Level Meter is a sound level meter released by Extech Instrument Corporation in 2008. The sound level meter has a measurement range of 100dB and can measure sound pressure levels from 30 to 130dB. It also has three frequency weightings: A, C, and Flat, and can choose fast response or slow response. The sound level meter can store 12280 data points and can transfer data to a PC via an RS-232 interface. It also supports 1/1 and 1/3 octave band analysis.
The Extech 407790 is a Real Time Octave Band Analyzer and Type 2 integrating sound level meter. It features a wide 100dB range from 30 to 130dB and includes a 160 x 160 dot matrix backlit LCD display. The device supports A, C, and Flat weighting with Fast or Slow response options.
| Applicable standards | ANSI S1.4 Type 2, EN IEC 60651, EN IEC 60804, and EN IEC 1260-1995 |
|---|---|
| Accuracy | +1.5dB (ref 94dB @ 1 kHz) |
| Measurement range / function | 30dB to 130dB / La, Le, Lp, Leg, LE, Lmax, Lmin |
| Frequency range | 25Hz ~ 10kHz |
| Sound level meter display | Integrating SLM: Digital, 4 Digits with Bargraph |
| Real Time Analyzer display | Graphical, Bargraph with cursor |
| 1-1/3 Analyzer level range | 30 to 1300B |
| 1/1 Octave band center frequencies | 9 bands |
| 1/3 Octave band center frequencies | 27 bands |
| Power | Four type C size 1.5V batteries, External DC power: 6, 1A |
It meets ANSI S1.4 Type 2, EN IEC 60651, EN IEC 60804, and EN IEC 1260-1995 standards.
The measurement range is 30dB to 130dB.
Yes, it comes with a detachable 0.52" (13.2mm) diameter condenser microphone.