Extech SL400 个人噪音剂量计（30 - 140dB）

Standard : IEC61252-1993, IEC67672-1-2003, ANSI S1.25-1992, ANSI S1.4-1983, ANSI S1.43-1997
Range : 
30 - 90 dB, 
50 - 110dB
C, Z Peak : 70 - 140dB 
C và Z Peak : 90 - 143dB 
Accuracy : ±1.4dB@94dB/1kHz
Response Rate : Fast, Slow, Impulse
Exchange Rate: 3, 4, 5 or 6 dB
Threshold Level : 30 - 140dB (bước 0.1dB)
Criterion Level : 30 - 140dB (bước 0.1dB)
Bandwidth : 20Hz - 8kHz
Memory : 
Dose: 10,000 points/SLM: 999,999 points
Measurement Duration : 
5, 10, 15, or 30 minutes
1, 2, 4, 8, 12, or 24 hours
Measurement Modes : %Dose, Lxmax, Lxyp, Lxmin, Lxeq, SEL (LAE), PeakMAX, LAVG, TWA, LEP, LN% SPL, Lxmax, Lxyp, Lxmin, Lxeq, SEL (LAE) PeakMAX
Clip-on 0.5" (12.7mm) , microphone cable with 32" (81.3cm) 
USB interface with Windows® 7 and 8 compatible software to control setup and retrieve stored events or analyze real-time measurements
Dimensions/Weight : 4.2 x 2.6 x 1.3” (107 x 65 x 33mm) - exclude connector on top/ 7oz. (198g) 
Complete with 9V battery, software, USB cable, and carrying case