Introduction: The AWA5688 multi-function sound level meter is a new generation noise measuring instrument using digital signal processing technology. It is an upgraded product of AWA5680 series, with lower power consumption, stronger function, color screen LCD, friendly interface and rich display content. Three parallel (simultaneous) frequency weighting of A, C, and Z, and three parallel (simultaneous) time weighting of F, S, and I can simultaneously perform integral measurement, statistical analysis, and 1/1 OCT analysis. Users can also customize 1/3 OCT analysis, FFT analysis, personal sound exposure measurement, recording and other functions as needed. The instrument can be widely used in environmental protection, labor health, industrial enterprises, scientific research and teaching. Technical Parameters: National standards for implementation: GB/T 3785-2010 (IEC 61672-1:2013) Level 2 GB/T 3241-2010 Level 2 / IEC 61260-1: 2014 Class 2 Execution of the metrological verification procedures: JJG 188-2017 "Sound Level Meter", JJG 778-2005 "Noise Statistics Analyzer", JJG 449-2014 "Optical Frequency and Fractional Octave Filter" Frequency range: 20 Hz to 12.5 kHz Measurement range: 28 to 133 dB(A); 33 to 133 dB(C); 40 to 133 dB(Z) Linear range: 105 dB(A) Frequency weighting: parallel (simultaneous) A, C, Z Time weighting: parallel (simultaneous) F, S, I Indicator: 2.6-inch color screen display, resolution 240 × 320, display content is rich, when the backlight delay is normally open, the brightness is automatically adjusted, other can be manually adjusted Main measurement indicators: Lxyi, Lxyp, Lxeq, Lxmax, Lxmin, LxN, SD and Ld, Ln, Ldn, etc., which are automatically measured in 24 hours. Note: x is A, C, Z, y is F, S, I, N is 1 to 99 users can choose an integer A/D sampling frequency: 48k times / sec 24-hour automatic monitoring: 1 time per hour, each measurement time can be selected from 1 min to 1 hour, continuous measurement of multiple groups of 24 hours Storage: 32Mb, 3300 sets of single statistical analysis results with distribution map Output interface: 1) AC output, output power: 150 mW, can be connected to 8 Ω monitor headphones 2) DC output: output DC signal proportional to the currently displayed sound pressure level, 15 mV/dB 3) RS232 interface: communicate with the computer, print the measurement results and related charts through the relevant micro printer 4) USB interface: communicate with computer, firmware upgrade, conform to USB1.1 standard, compatible with USB2.0 standard Internal calendar clock: Error less than 1 minute / month, GPS time, school time Power supply: 4 AA alkaline batteries, can be used continuously for more than 30 hours, meeting the requirements of 24-hour continuous monitoring in environmental monitoring Dimensions (mm): 260 × 80 × 30 Quality (kg): 0.35 Working environment Operating temperature range: -10 °C ~ 50 °C; Relative humidity: 20% ~ 90%; Atmospheric pressure: 65 kPa ~ 108 kPa Calibration Use the AWA6223F multi-frequency point calibrator to meet the requirements of the sound level calibrator in the HJ 707-2014 ambient sound monitoring technical specification. Printing function AH40 dot matrix printer, print data can be saved for a long time
Introduction: The AWA5688 multi-function sound level meter is a new generation noise measuring instrument using digital signal processing technology. It is an upgraded product of AWA5680 series, with lower power consumption, stronger function, color screen LCD, friendly interface and rich display content. Three parallel (simultaneous) frequency weighting of A, C, and Z, and three parallel (simultaneous) time weighting of F, S, and I can simultaneously perform integral measurement, statistical analysis, and 1/1 OCT analysis. Users can also customize 1/3 OCT analysis, FFT analysis, personal sound exposure measurement, recording and other functions as needed. The instrument can be widely used in environmental protection, labor health, industrial enterprises, scientific research and teaching.
