				   PRT Calc
				  ~~~~~~~~~~
   PRT Calc  is  intended  as  an aid for anyone who uses platinum resistance
thermometers. It will calculate the resistance of a PRT  at  any  temperature
within  the  specified  range  or  will  calculate  the  temperature  if  the
resistance is known. PRT Calc can, therefore, be used by  people  calibrating
or designing platinum resistance thermometers based on BS 1904, or people who
wish to use PRT sensors directly into a DVM or bridge without any intervening
electronics.
   The  formulae  used  by PRT Calc  were  derived  from the British Standard
BS 1904 : 1984, for which full credit is acknowledged.  The  formulae  should
give  no  errors  greater  than the least significant digit in the BS tables,
hence ensuring that any results obtained by this program can be considered to
be correct for all practical purposes. (If anyone discovers any errors PLEASE
let me know).
