Method for temperature compensation in a combined pressure and temperature sensor

摘要

A method for temperature compensation is disclosed which comprises the excitation of sensors in a guide wire sensor assembly so as to produce two distinguishable signals. At least a component of at least one of the signals is representative of the cable resistance and can be used for compensation purposes. There is also provided an apparatus suitable for such measurements having temperature compensation circuitry. The compensation circuitry comprises circuitry for selectively and independently registering a resistance value for a passive resistor on the chip.