PORTABLE DEVICE AND METHOD FOR MEASURING SCALE LAYER OF STEEL PLATE SURFACE

摘要

PURPOSE: A scale layer measuring device and a method are provided to measure the thickness of the steel plate scale with moving plural magnetic induction sensors and a noncontact temperature sensor at a nondestructive state. CONSTITUTION: A display unit(11) showing the measured scale layer value and the temperature of a steel plate, and a key pad(12) to input the calibration curve set constant are mounted in the upper part of a body(10). A portable handle(13) to move to the measuring position is mounted in the middle part of the body, and a supporting section(14) to stand on the test steel plate is installed in the lower part of the portable handle. A temperature sensor(20) detecting the temperature at a noncontact state is mounted in the lower surface of the supporting section, and plural magnetic induction sensors(30) are arranged around the temperature sensor. A magnetic induction coil is formed around the soft magnetic core, and the difference of the voltage induced between detecting coils in upper and lower parts is measured. The thickness of the scale is operated by the voltage difference, and each value is measured on average by arraying the sensors in a rectangle. The noncontact temperature sensor calibrates the temperature.