■   Precision noise measurement

    ■   Sound level logging and precision recording 

    ■   Personal noise exposure measurement in the workplace 

    ■   Occupational noise evaluation

Model:	ASV5910+-3 Noise Dosimeter
Applied Standards:	IEC 61252:2002 Personal Sound Exposure Meters, IEC61672-2002,Class 2; ANSI S1.25:1991 Personal Noise Dosimeters
Microphone:	1/4 inch prepolarized condenser field replaceable threaded microphone
Channel:	Dual channels
Measurement Range:	40-140dBA
Peak C Measuring Range:	70 to 143dB
Frequency Range:	20Hz to 12.5kHz
Frequency Weightings:	Parallel (simultaneous) A, C, Z for each channel
Time Weightings:	Parallel (simultaneous) F, S, I, Peak for each channel
Selectable thresholds :	40 to 90dB
Exchange rates:	3, 4, 5 and 6
Selectable criterion:	70 to 90dB
Dose exposure measurement range:	0.01Pa²h ~ 99.99Pa²h
Noise dose measuring range:	0% ~ 9999%
Integrating time：	1 second ~ 24 hours
Memory capacity:	32GB TF card
Data logging  interval:	-  Linst: 0.02 s ~ 6.00 s available;  -  Leq, t: 0.2 s ~ 60.0 s available;  -  Li & Leq: 0.2 s ~ 60.0 s available;
Calibration information:	Calibration dates, times, and levels
Internal software function:	Integrating Function,  Statistical Analysis Function
Security:	Lock via keys
Power supply:	Rechargeable lithium polymer battery
Battery life:	Over 36 hours run capacity
Dimensions:	68(H)×68(W)×20(D)mm
Weight:	95g
Working Temperature:	-15℃～50℃
Display:	128×64 LCD
Output:	Mini USB port
Measure Parameters:	LXYp,  LXeq,T,  LXYmax,  LXYmin,  LN (Note:  X is A, C, Z; Y is F, S, I; N can be 1-99) SEL,  Lex,8h,  Lavg, TWA,  DOSE,  E,  SD,  LXpeak
Precision recording function:	32kHz,32bit	High sample frequency, high accuracy. big capacity files for further analysis.
	8kHz,8bit	Low sample frequency, low capacity files only for monitoring
	Trigger mode:	It records for a specified time at the same time as the integral measurement or after the overrun start. The recording time is 10 s to 90 s When set to overrun start;
	Maximum recording time:	Approx. 66 h at 32 kHz/32 bit (up to 2 h for a single file), up to 1000 h at 8 kHz/8 bit (up to 2 h for a single file).
Real-time 1/1 Octave analysis	Filter type: Parallel (real time) octave, G = 10 3/10; Standard compliant: IEC 61260: 2014 Class 2; Centre frequency of the filter: 31.5 Hz, 63 Hz, 125 Hz, 250 Hz, 500 Hz, 1 kHz, 2 kHz, 4 kHz, 8 kHz.