Specification :

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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: TM8812 TM8812C
Measuring range ( metric/ imperial) : 1.0-200mm, 0.05-8inch
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: D15x2.0mm, D20x3.0mm determined by the transducer
Calibration block: included
Resolution: 0.1mm( TM8812C 0.01mm)
Accuracy: ± ( 0.5% n+ 0.1)
RS232C interface: with RS232C
Power supply: 4x1.5V AAA ( UM-4) battery
Battery indicator: low battery indicator
Operating conditions: 0-+ 45 ( 32 -104 ) , d90% RH
Dimensions: 120x62x30mm
weight: 164g( not including battery)
Optional Accessories:
6M$ 6mm thin Material probe: Measuring range( steel) : 1.0 50.0mm Operating temperature: -10~ + 60
5M$ 12high temperature probe: Measuring range( steel) : 1.0~ 225.0mm( normal temperature) Measuring range( steel) : 4.0~ 100.0mm ( high temperature) Operating temperature: -10~ + 300