Real-time methods of measuring the temperature of metallic melts at machine plants
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The upgrading of foundries at machine plants is inextricably tied to providing them with modern melting and casting equipment and modern instruments to monitor routine melting operations in order to improve the properties of the metal being made.
Most of the measurements performed in these foundries are related to monitoring and controlling temperature during the melting and casting of metal.
Such measurements are often obtained by using portable rods with standardized, replaceable sets of thermocouples made with platinum-group metals. The thermocouples vary in design and are used for real-time measurement of temperature. One of the shortcomings of these instruments is the very short measurement period (~3–7 sec). The accuracy of measurements of the temperature of molten metal by systems in which the aforementioned thermocouples are the key component is determined by the agreement between their readings, the measurement error, the error made in recording the output signal of the...