The thickness tester is a high-performance, it can test the thickness of multi-polyester, polyimide, polypropylene film and aluminum sheet and aluminum, it is installed in the extruder, and it can measure Continuously. The tester is made up with a thicknes sensor, computer box, "o"scan rack and scan-controller. Main technical data: The range of measurement: Pm 6-120um Kr 40-800um Sr 500-6000um Percision: Below 100um is ± 1.0um Over 100um is ≤ ± 1% The strength of radioactive: Pm 350mci Kr 300-500mci Sr 30mci Measuring distance: Pm 13mm Kr 15mm Sr 20mm Scanning Speed: 1.0-6.0m/min