Diagnostic device and diagnostic method
AssigneeYokogawa Electric Corporation
InventorTakuya Tachibana
Life of this patent
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Abstract
A diagnostic device of a first thermocouple, the diagnostic device includes: a controller that acquires a first measurement value of the first thermocouple each time current passes through the first thermocouple and determines, in a first predetermined cycle and based on the acquired first measurement value, a presence of a disconnection risk that the first thermocouple will disconnect from the diagnostic device; and an output unit that outputs a first alarm indicating the disconnection risk based on a result of the determination by the controller.
Claims9
A diagnostic device of a first thermocouple, the diagnostic device comprising:
- a controller that:
- acquires a first measurement value of the first thermocouple each time a current passes through the first thermocouple, and
- determines, in a first predetermined cycle and based on the acquired first measurement value, a presence of a disconnection risk that the first thermocouple will disconnect from the diagnostic device;
- and
- an output unit that outputs a first alarm indicating the disconnection risk based on a result of the determination by the controller, wherein
- the controller:
- calculates a first average value of a plurality of acquired first measurement values in a predetermined interval, and
- determines, based on the first average value, whether the disconnection risk is present.
A diagnostic device of a thermocouple, the diagnostic device comprising:
- a controller that:
- acquires a measurement value of the thermocouple each time a current passes through the thermocouple, and
- determines, in a first predetermined cycle and based on the acquired measurement value, a presence of a disconnection risk that the thermocouple will disconnect from the diagnostic device;
- and
- an output unit that outputs an alarm indicating the disconnection risk based on a result of the determination by the controller, wherein
- when the controller has determined that the disconnection risk is present, the controller determines a second predetermined cycle shorter than the first predetermined cycle.
A diagnostic device of a thermocouple, the diagnostic device comprising:
- a controller that:
- acquires a measurement value of the thermocouple each time a current passes through the thermocouple, and
- determines, in a predetermined cycle and based on the acquired measurement value, a presence of a disconnection risk that the thermocouple will disconnect from the diagnostic device;
- and
- an output unit that outputs an alarm indicating the disconnection risk based on a result of the determination by the controller, wherein
- the controller gradually shortens the predetermined cycle when the controller has determined that the disconnection risk is present.
A diagnostic method of a thermocouple, the diagnostic method comprising:
- acquiring a measurement value of the thermocouple each time a current passes through the thermocouple;
- determining, in a predetermined cycle and based on the acquired measurement value, a presence of a disconnection risk that the thermocouple will disconnect from a diagnostic device;
- outputting an alarm indicating the disconnection risk based on a result of the determination;
- calculating an average value of a plurality of acquired measurement values in a predetermined interval;
- and
- determining, based on the average value, whether the disconnection risk is present.
Dependencies are inferred from the claim text.