Glass thermometers are widely used in many industries due to their simple structure and intuitive reading. However, different industries have significant application differences in their calibration and need to take targeted measures.
In the food industry, glass thermometers are mainly used to monitor the temperature during food processing to ensure food safety and quality. For example, in the production of baked goods, the precise control of dough fermentation temperature and baking temperature is crucial. Therefore, the focus of calibration is to ensure the accuracy of the thermometer within the common temperature range of food processing (such as 0 - 200℃). In view of the particularity of the food processing environment, such as possible water vapor and oil stains, waterproof and oil - proof glass thermometers should be selected, and they should be regularly cleaned and calibrated to prevent measurement errors caused by pollution.
In the chemical industry, glass thermometers are often used to monitor the temperature during chemical reactions. Since chemical reactions may be accompanied by drastic temperature changes and pressure fluctuations, high requirements are placed on the temperature and pressure resistance of the thermometer. In terms of calibration, not only the calibration of conventional temperature points should be concerned, but also special calibration should be carried out for extreme temperature conditions that may occur in chemical production. At the same time, considering the continuity of chemical production, on - line calibration technology can be adopted to calibrate the thermometer without affecting production, ensuring the accurate and reliable temperature monitoring of the production process.
In the scientific research field, glass thermometers are used for temperature measurement in various experiments, and the requirements for accuracy are extremely high. For example, in physical experiments, it may be necessary to accurately measure small temperature changes. Therefore, more calibration points will be set in the calibration process, covering a narrower temperature range to meet the needs of high - precision measurement in experiments. Moreover, the calibration certificate of glass thermometers for scientific research is required to record in detail the correction values and uncertainties of each calibration point, providing accurate data support for scientific research experiments.
