In industry, SPRT's superior accuracy and long-term stability make it widely used as a temperature standard and calibration reference thermometer in fields where quality assurance and temperature traceability are required.
Semiconductor manufacturing
In semiconductor manufacturing, high accuracy temperature control significantly impacts product quality. SPRT is used as a reference thermometer for thermometers, constant temperature baths, and calibration equipment used in the manufacturing process, contributing to maintaining temperature accuracy throughout the entire process.
Precision equipment manufacturing
In the manufacturing of precision equipment such as liquid crystal display and optical components, temperature control is crucial to product performance and reliability. SPRT is used as a calibration standard for manufacturing equipment, testing devices, and temperature sensors, supporting high accuracy quality control.
Steel industry
In the steel industry, temperature control in heat treatment furnaces and testing equipment significantly impacts product quality. SPRT is used as a reference thermometer for calibrating thermocouples, resistance thermometer, and constant temperature baths used in process, contributing to the reliability and traceability of temperature measurements.
Research development
In research and development, such as development of new materials and process evaluation, high accuracy temperature measurement is crucial for the reliability of experimental results. SPRT is used as a reference thermometer for precise temperature measurement in laboratories and for calibrating various thermometers and test equipment.
Summary
SPRT requirements for the calibration field
In calibration settings, SPRTs are required to comply with ITS-90 standards, as well as possess high measurement accuracy, long-term stability, and excellent repeatability. Furthermore, minimal self-heating and sufficient immersion characteristic are essential for high accuracy temperature calibration. A four-wire system is generally used for measurement, and the material and shape of the protective tube must be appropriately selected according to the operating temperature range and measurement environment. Moreover, to achieve high accuracy calibration, temperature uniformity (heat distribution) of calibration equipment, such as constant-temperature baths, is a crucial factor, in addition to the SPRT itself.
The future of traceability maintenance and quality control
Maintaining traceability and accuracy control in temperature measurements is a crucial foundation supporting quality assurance and international trade. International mutual recognition mechanisms such as the JCSS calibration system and ILAC MRA ensure the reliability and international compatibility of calibration results. In the future, advancements in the digitalization and automation of calibration systems, as well as sophistication of uncertainty evaluation methods, are expected to enable more efficient high accuracy temperature calibration, further contributing to industrial fields that require high temperature control, such as semiconductors, steel, automobiles, and pharmaceuticals.
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Date created: 2026.07.07
