     7. Select temperature scale
This item  has  four  options;  C,F,K,R;  (Celsius,  Fahrenheit,  Kelvin  and 
Reaumer). The default is C. The horizontal curser  keys  scroll  through  the 
options, or the choice can be  made  directly  by  pressing  the  appropriate 
letter key. 
     8. Nominal resistance
This item enables the user to enter the nominal resistance of the  PRT  (i.e. 
at 0 C). The default for this value is  100 ê,  which  is  the  normal  Pt100
standard. There are few exceptions, such as some high temperature probes. 
