| 摘要 |
PURPOSE:To improve the measuring accuracy of temperature, by providing a mirror under the back surface of a semitransparent body, and correcting the radiation energy output from the semitransparent body of a radiation thermometer by the output of a wall-surface-temperature measuring means, the reflectivity and transmittance of the semitransparent body, and the reflectivity of the mirror. CONSTITUTION:Constants alpha and beta based on the reflectivities rho1 and rho2 and the transmittance tau of a semitransparent body 2 and the reflectivity rho0 of a mirror 3, the emissivity epsilonw of a wall surface 1a, and the like are inputted to an operating means 6. They are converted into the radiation energy E(TW) from the wall surface 1a. At the same time, the operating means 6 performs the correcting operation of the output corresponding to the radiation energy E(S) from the semitransparent body 2 of a radiation thermometer 5 based on the E(TW) and the constants alpha and beta. Thus E(T) is obtained and the true temperature T of the semitransparent body 2 is operated and obtained. In this simple constitution, the true temperature of the semitransparent body can be measured highly accurately. |
