What feature must be present in thermometers used in vat pasteurizers?

The feature that must be present in thermometers used in vat pasteurizers is their ability to accurately measure the temperature ranges required for pasteurization. This is crucial because pasteurization relies on precise temperature control to effectively eliminate pathogenic microorganisms while preserving the quality of the product. The required temperature range for effective pasteurization is well-established, and any deviation can compromise food safety and the efficacy of the process.

Accurate temperature measurement ensures that the product reaches the necessary heat treatment to achieve proper pasteurization. Without this capability, it would be impossible to guarantee that the process meets health regulations and safety standards, which are essential for consumer protection. Other features, such as being digital or portable, do not directly impact the necessary capability of the thermometer to provide precise readings within the critical temperature range.