Low cost calibration system for frequency varying...

Details Low cost calibration system for frequency varying... Low cost calibration system for frequency varying...

G - Physics

05

D

G05D 23/22 (2006.01) G01K 7/22 (2006.01) G01K 15/00 (2006.01) G05D 23/24 (2006.01)

Patent

CA 2080953

LOW COST CALIBRATION SYSTEM FOR FREQUENCY VARYING TEMPERATURE SENSING MEANS FOR A THERMOSTAT ABSTRACT OF THE DISCLOSURE Low cost temperature sensor for thermostats utilizing a calibration resistor and a microprocessor with switchable ports wherein said microprocessor selects between high impedance input or an output for a temperature sensing element and a calibration resistor where by selecting the input, the electrically connected element is effectively removed from the circuit thus allowing the system to self calibrate itself.

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