ASR5910 mine intrinsically safe sound exposure meters

Products: ASR5910-type personal sound exposure meters is a not only can measure exponential time-weighted average sound level measurement time intelligent noise measurement instruments. It uses advanced digital detection technology is controlled by the MSP430 to calculate, with automatic range conversion, good reliability, high stability, wide dynamic range and so on. Its performance in line with IEC61672-1 and GB / T15952 in two sound level meter at the request of the RF field susceptibility belong X class. Basic parameters: (1) measuring range sound level: 30dB ~ 130dB (A) noise exposure: 0 ~ 19.99 (Pa2.h) (2) Frequency range: 20Hz ~ 8kHz (3) frequency weighting: A-weighting (4) Time Weighting: F (fast), S (slow) (5) time-controlled measurement: 10 seconds, 1 minute, 5 minutes, 10 minutes, 15 minutes, 30 minutes, 1 hour, 4 hours, 8 hours, 24 hours (6) Show 4 LCD: direct display Lp, Leq, Lmax, LAE, E, Tm value measurement. (7) permit the maximum sound pressure level on the microphone: Maximum peak input voltage 135dB (8) the electrical input devices: 3Vp-p (9) exposure meter comply with the technical operating voltage range: 2.2V ~ 3.3V (10) changes in environmental conditions After under reference conditions typical time interval needed to stabilize at least 12h, at least 19h under other environmental conditions Main application:. ◆ measuring personal noise level ◆ storm drain assessment and monitoring of workplace noise situation ◆ ensure compliance with workplace regulations ◆ requirements for the selection of hearing protection safety characteristics: a) Explosion-proof type: Mine intrinsically safe use. b) proof mark: ExibⅠMb. c) Protection grade: IP54.