Description: temperature to which a particular piece of equipment is subjected during normal operation; Name: operating temperature 
Description: Temperature determined by the given application and fluid. ; Name: Working temperature
Description: norm/stipulation describing the explosion protection. The explosion protection type, the device category, the temperature class as well as the device / explosion group are taken from this norm. The type and number of the norm/stipulation with issue year and issue month must be given; Name: Reference norm of the explosion protection