HP 82479A Owner's Manual page 51

Keywords
TCNV
TCH© string expression
string expression - a string expression of the form HH: [115 5,
This function converts a string of the form HH: [If1: 5'= to an integer representing the number of seconds
since midnight.
TCNV$
TCHYEC numeric expression
numeric expression - the number of seconds since midnight.
This function converts a number representing the number of seconds since midnight into a string of the
form HH: [qs 5,
TCOUPLE
TCOWURLLE C string expressions voltage [+ reference]
string expression - any ASCII string with the first character indicating the type of thermocouple (E, J, K,
R, S, or T).
voltage - measured thermocouple voltage.
reference - reference temperature in the units specified by OFT TOM OEGEEE:S.
This function retiirns the temperature from a thermocouple voltage, sensor type, and optional reference
temperature. If no reference temperature is provided, zero degrees Celsius is assumed. The reference
temperature must be in the current temperature units. The returned result is in the units specified by the
OFTION DEGEEES statement, or in degrees Celsius if no instrument buffer has been established.