Which tools are commonly used for measuring roast temperature?

• A. Hydrometers and pH meters
• B. Thermocouples and infrared thermometers
• C. Barometers and refractometers
• D. Scale and moisture analyzers

Answer: (B)

Thermocouples and infrared thermometers are commonly utilized in measuring roast temperature because they offer precise and reliable temperature readings, which are crucial in the roasting process. Thermocouples are sensors that can measure temperature at various points within the roasting chamber, providing real-time data important for adjusting roasting profiles and achieving consistent results. Infrared thermometers, on the other hand, allow for non-contact measurement of the surface temperature of the beans, ensuring that roasters can monitor the temperature without disrupting the roasting process.

Other tools mentioned, like hydrometers and pH meters, focus on liquid measurements, while barometers typically measure atmospheric pressure, and refractometers assess the concentration of sugar in brewed coffee. Scales and moisture analyzers serve different purposes in roasting, such as measuring raw coffee weight and moisture content, but they are not designed specifically for temperature measurement. Therefore, the combination of thermocouples and infrared thermometers makes them the suitable tools for accurately monitoring roast temperatures during the coffee roasting process.