What is the absolute error of a thermocouple temperature measuring system, having the measuring domain ranging from −20 ∘ C to 180 ∘ C if the true measured temperature is of 80 ∘ C and its accuracy...

What is the absolute error of a thermocouple temperature measuring system, having the measuring domain ranging from −20
^∘C to 180
^∘C if the true measured temperature is of 80
^∘C and its accuracy class of 1.5 % is defined on the basis of the maximum permissible related error? What is the absolute error of the same temperature measurement system if its accuracy class of 1.5 % is defined on the basis of the maximum permissible relative error?