LogTag Recorders LogTag Analyzer Temperature Recorder Benutzerhandbuch

There are some products and materials that exist which have accelerated rates of 
degradation at higher temperatures. For example, perishable food items, pharmaceutical 
products and many forms of bacteria can grow/degrade exponentially as the 
environmental temperature increases. Mean kinetic temperature is a calculation that 
accommodates the non-linear thermal effect temperature can have on products. Mean 
kinetic temperature is represented as the equivalent temperature the product was 
thermally subjected to during the period of time the various temperature reading were 
recorded. 

Mathematically the formula for calculating the mean kinetic temperature can expressed as 
illustrated in the following picture: 

 

Where: 

mkt 

Mean kinetic temperature, in degrees Celsius 

 

the activation energy. LogTag Analyzer uses an 
activation energy value of 83.144 KJ/mol for the 
calculation. 

 R 

the universal gas constant, which is 0.0083144 KJ/mol K 

 n 

the number of data points to include in the calculation 

 t

i

a data point to include in the calculation, in degrees 
Celsius 

For example, if there were 5 data points to calculate the mean kinetic temperature of and 
they were, 12.3, 15.9, 16.2, 14.7 and 14.9 degrees Celsius, then the mean kinetic 
temperature would be 14.9 degrees Celsius.