How many times a year must all temperature measuring devices be calibrated and certified?

Calibration and certification of temperature measuring devices are crucial for ensuring accuracy and reliability in asphalt operations. The requirement for calibration twice a year balances the need for precision with practical considerations of time and resources. By calibrating semi-annually, organizations can account for any potential drift in measurement accuracy that may occur over time due to environmental factors or regular wear and tear on the devices. This frequency helps in maintaining compliance with industry standards, supports quality control processes, and ensures that the temperature data used in asphalting is both accurate and reliable, ultimately contributing to the overall quality of the asphalt produced and applied.