CPRT_COEFA?
Returns the number which was entered for the first coefficient of the
polynomial used in the custom RTD. Using the example above
CPRT_COEFA? Would return: 
3.9083E-3
CPRT_COEFB
This command is used for entering a custom RTD into the calibrator. The
numeric value entered after the command will be set as the second
coefficient of the polynomial used by the custom RTD.
For example:
CPRT_COEFB -5.775x10-7 enters -5.775x10-7 as coefficient B.
CPRT_COEFB?
Returns the number, which was entered for the first coefficient of the
polynomial used in the custom RTD. Using the example above,
CPRT_COEFB? Would return: 
-5.775x10-7
CPRT_COEFC
This command is used for entering a custom RTD into the calibrator. The
numeric value entered after the command will be set as the first coefficient
of the polynomial used by the custom RTD.
For example:
CPRT_COEFC -4.183x10-12 enters -4.183x10-12 as coefficient C.
CPRT_COEFC?
Returns the number which was entered for the first coefficient of the
polynomial used in the custom RTD. Using the example above
CPRT_COEFC? Would return: 
-4.183x10-12
CPRT_MIN_T
Sets the minimum temperature of the custom RTD range. The temperature
value must be entered with a degrees label, CEL for Celsius and FAR for
Fahrenheit. 
For example: 
40