Temperature monitoring device
Temperature monitoring device means an instrument used to monitor temperature and having a minimum accuracy of 2 percent of the temperature being monitored expressed in C, or 2.5 C, whichever is greater. The temperature monitoring device may measure temperature in degrees Fahrenheit or degrees Celsius, or both.
40 CFR § 63.761
All terms used in this subpart shall have the meaning given them in the Clean Air Act (Act), subpart A of this part (General Provisions), and in this section. If the same term is defined in subpart A and in this section, it shall have the meaning given in this section for purposes of this subpart.