EXTECH SL355 Máy đo đồ ồn của người

Standards: IEC61252 ,ANSI S1.25(1992) 

      IEC 60651-1979

     ANSI S1.4-1983 Type S

Ranges: 60 - 130 dB / 70 to 140dB (A/C Weighting)

  60 to 130dB / 93 to 133dB (C or Z (Linear) Peak)

  70 to 140dB / 103 to 143dB (C or Z (Linear) Peak)

Digital Display LCD: 0.01-9999%

Criterion Level: 80, 84, 85, or 90dB

Exchange Rate: 3, 4, 5 or 6 dB

Threshold Level: 70 to 90 (1dB steps)

High Level Detector/Peak Flag: 115dB, 130dB and 140dB

Response Rate: Fast or Slow

Measurement Duration: 5, 10, 15, or 30 minutes

                                        1, 2, 4, 8, 12, or 24 hours

Microphone: 1/2 inch electret condenser with 31” cable

Battery Life: >35 hrs

Event Storage: 20 surveys

USB Interface: yes

Real time: clock/calendar

Dimensions/Weight: 3.8 x 2 x 1.4” (97 x 51 x 35mm) 4.2oz. (120g) incl.batteries

Includes belt clip, clip-on 0.5" microphone with 2.6ft (0.8m) cable, 3 AAA batteries, mini screwdriver, software, USB cable, and carrying case