Self-verifying temperature sensor

Details Self-verifying temperature sensor Self-verifying temperature sensor

1997-09-15

1999-03-30

Biegel, Ronald

Thermal measuring and testing

Temperature measurement

By electrical or magnetic heat sensor

374163, 374181, G01K 700

Patent

active

058879781

ABSTRACT:
A self-verifying temperature sensor and method for measuring and verifying the true thermodynamic temperature of a system. The sensor is constructed of various combinations of the following temperature-dependent elements: thermoelements, resistive elements, capacitive elements and other inductive elements. In the preferred embodiment, the sensor is constructed of resistive element connected between four thermoelement wires. A fifth thermoelement wire is connected to the resistive element. The sensor produces a data signature from various voltage, resistance, inductance, and capacitance measurements. Measurement electronics collect and condition the data signature. A computer analyzes the data signature and provides the system operator with a verified sensor temperature, thus, allowing the system operator to recognize and account for drift or decalibration of the sensor. The self-verifying temperature sensor can also be recalibrated insitu, thereby eliminating the necessity of sensor removal to verify recalibration.

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