ST8852 is similar model as ST8851, but with Datalogger function. ST8852 is similar model as ST8851, but with Datalogger function built-in. ST8852 is designed for noise project; quality control; illness prevention and cure and all kinds of environmental sounds measurement. It is applied to the sounds measurementat factory; school; office; traffic access and household, etc. Features Conforms to the IEC61672-1 CLASS2 for Sound Level Meters MAX & MIN measurements Over range display Under range display A & C Weighting FAST & SLOW response Analog AC/DC outputs for connection to frequency analyzer or X-Y shaft recorder Specifications Standard applied: IEC61672 -1 CLASS2 Accuracy: 1.4dB Frequency range: 31.5HZ ~ 8KHZ Dynamic range: 50dB Memory: 32700 readings Level ranges: Lo: 30dB ~ 80dB Med: 50dB~100dB Hi: 80dB ~ 130dB Auto: 30dB ~ 130dB Frequency weighting: A/C Time weighting: FAST (125ms), SLOW (1s) Microphone: 1/2 inch electret condenser microphone Display: 4 digits LCD display with a resolution of 0.1dB Display Update: 2 times/sec. MAX hold: Hold the Maximum reading MIN hold: Hold the Minimum reading HOLD: Hold the readings Alarm function: "OVER" is when input is more than upper limit of range. "UNDER" is when input is less than lower limit of range. Analog output: AC/DC outputs from earphone outlet AC=1Vrms ,DC=10mV/dB Data output: USB data traffic Auto power off: Meter automaticallyshuts down after approx. 15 minutes of inactivity. Power supply: One 9V battery included, SM905 with 1.7mm DC tip. (optional) Power life: About 30 hours Operation temperature and humidity:0°C ~ 40°C, 10% RH ~ 90% RH Storage temperature and temperature:? -10°C ~ +60°C, 10% RH ~ 75% RH Dimension: 278 (L) x 76 (W) x 50 (H) mm Weight: 350g Accessories: Instruction manual, battery, screwdriver, 3.5mm earphone plug, windscreen, software( WIN 95,98,ME,NT,2000,VISTA ), USB cable.
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