à¤Ã×èͧÇÑ´àÊÕ§ Sound Meter à¤Ã×èͧÇÑ´ÃдѺ¤ÇÒÁ´Ñ§àÊÕ§ Sound Meter > Sound Level Meter à¤Ã×èͧÇÑ´àÊÕ§ Datalogger Sound Level Meter DT-8852 ºÑ¹·Ö¡¢éÍÁÙÅ µèÍà¢éÒ Computer ä´é DT-8851/8852 Sound Level Meters 8851/8852 Sound Level Meters are designed for noise project,quality control, illness prevention & cure and all kinds of environmental sounds measurements. It is applied to the sounds measurement at factory, school, office, traffic access and household etc. DT-8852 Sound meter Features: 1.This unit confirms to the IEC61672-1 class 2 for Sound Level Meters 2.MAX & MIN measurements 3.Overrange display 4.Underrange display 5.A & C Weighting 6.FAST & SLOW response 7.Analog AC/DC outputs for connection to frequency analyzer or X-Y shaft recorder 8.Datalogger function (8852) 9.Adjustable Alarm-Levels (8852) 10.Memory for 32700 readings Specifications: Standard applied IEC61672-1 Type 2,ANSI S1.4 Type2 Accuracy ±1.4dB Frequency range 31.5HZ ~ 8KHZ Dynamic range 50dB Level ranges LO:30dB~80dB Med:50dB~100dB Hi:80dB~130dB Auto:30dB~130dB Time weighting FAST ( 125mS ), SLOW ( 1s ) Microphone 1/2 inch electret condenser microphone Resolution 0.1dB Display Update 2 times/sec Analog output AC/DC outputs, AC=1Vrms,DC=10mV/dB Accessories : Battery, screwdriver, audio plug, windscreen, software, USB cable, tripod and DC 9V power supply and gift box with carrying case. à¤Ã×èͧÇÑ´àÊÕ§ Sound Meter à¤Ã×èͧÇÑ´ÃдѺ¤ÇÒÁ´Ñ§àÊÕ§ Sound Meter > Sound Level Meter à¤Ã×èͧÇÑ´àÊÕ§ Datalogger Sound Level Meter DT-8852 ºÑ¹·Ö¡¢éÍÁÙÅ µèÍà¢éÒ Computer ä´é