â·ÃÊͺ¶ÒÁÃÒ¤Ò à¤Ã×èͧÇÑ´¤ÇÒÁË¹Ò Thickness Meter Ultrasonic Thickness à¤Ã×èͧÇÑ´¤ÇÒÁ˹ÒàËÅç¡ ÍÅÙÁÔà¹ÕÂÁ Êáµ¹àÅÊ ÇÑÊ´Øá¢ç§ > à¤Ã×èͧÇÑ´¤ÇÒÁ˹ÒàËÅç¡ ÇÑÊ´Øá¢ç§ Ultrasonic Thickness Gauge TM-8811 à¤Ã×èͧÇÑ´¤ÇÒÁ˹ÒàËÅç¡ ÇÑÊ´Øá¢ç§ Ultrasonic Thickness Gauge TM-8811 Application: Used for measuring thickness and corrosion of pressure vessels,chemical equipment,boilers,oil storage tanks,etc.in industries of petroleum,shipbuilding,power station,and machine manufacturing. Model: TM8811 Measuring range (metric/imperial): 1.5-200mm,0.06-8inch Operating principle: ULTROSONIC Materials measured: any hard materials, including steel, cast iron, aluminum, red copper, brass, zinc, quartz glass, polyethylene, PVC, gray cast iron, nodular cast iron and other materials Sound velocity: 500-9000m/s Lower limit steel pipes: ?15x2.0mm, ?20x3.0mm determined by the transducer Calibration block: included Resolution: 0.1mm Accuracy: ±(0.5%n+0.1) Power supply: 4x1.5V AA(UM-3)battery Battery indicator: low battery indicator Operating conditions:0-+45?(32?-104?),=90%RH Dimensions: 160x68x32mm weight: 208g (not including battery) HITECH Thickness Meter TM-8811 Ultrasonic Thickness Gauge à¤Ã×èͧÇÑ´¤ÇÒÁË¹Ò à¤Ã×èͧÇÑ´¤ÇÒÁ˹ÒàËÅç¡