Compensated tapped thermocouple system
First Claim
1. A THERMOCOUPLE SYSTEM INCLUDING IN COMBINATION, A HOT JUNCTION GENERATING A VOLTAGE REPRESENTING A TEMPERATURE TO BE MEASURED, A COLD JUNCTION GENERATING A VOLTAGE, A METER HAVING TERMINALS CONNECTING SAID METER IN A CIRCUIT WITH SAID JUNCTIONS, SAID METER COMPRISING A MOVEMENT FOR INDICATING SAID TEMPERATURE AND INTERNAL MEANS FOR COMPENSATING FOR THE EFFECT OF TEMPERATURE ON SAID COLD JUNCTION, AN OUTPUT CIRCUIT ALSO CONNECTED TO SAID TERMINALS, AN EXTERNAL AUXILIARY THERMOCOUPLE SYSTEM IN SAID OUTPUT CIRCUIT COMPRISING FIRST AUXILIARY THERMOCOUPLE MEANS FOR GENERATING A VOLTAGE FOR BUCKING THE EFFECT DUE TO TEMPERATURE VARIATIONS OF SAID COLD JUNCTION VOLTAGE AT SAID TERMINALS, SECOND THERMOCOUPLE MEANS CONNECTED TO SAID FIRST THERMOCOUPLE MEANS AND INCLUDING MEANS FOR COMPENSATING SAID SECOND THERMOCOUPLE MEANS FOR CHANGES IN TEMPERATURE FOR PROVIDING AN OUTPUT VOLTAGE IN SAID OUTPUT CIRCUIT REPRESENTING SAID TEMPERATURE TO BE MEASURED WITHOUT AFFECTING SAID METER.
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1 Claim
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1. A THERMOCOUPLE SYSTEM INCLUDING IN COMBINATION, A HOT JUNCTION GENERATING A VOLTAGE REPRESENTING A TEMPERATURE TO BE MEASURED, A COLD JUNCTION GENERATING A VOLTAGE, A METER HAVING TERMINALS CONNECTING SAID METER IN A CIRCUIT WITH SAID JUNCTIONS, SAID METER COMPRISING A MOVEMENT FOR INDICATING SAID TEMPERATURE AND INTERNAL MEANS FOR COMPENSATING FOR THE EFFECT OF TEMPERATURE ON SAID COLD JUNCTION, AN OUTPUT CIRCUIT ALSO CONNECTED TO SAID TERMINALS, AN EXTERNAL AUXILIARY THERMOCOUPLE SYSTEM IN SAID OUTPUT CIRCUIT COMPRISING FIRST AUXILIARY THERMOCOUPLE MEANS FOR GENERATING A VOLTAGE FOR BUCKING THE EFFECT DUE TO TEMPERATURE VARIATIONS OF SAID COLD JUNCTION VOLTAGE AT SAID TERMINALS, SECOND THERMOCOUPLE MEANS CONNECTED TO SAID FIRST THERMOCOUPLE MEANS AND INCLUDING MEANS FOR COMPENSATING SAID SECOND THERMOCOUPLE MEANS FOR CHANGES IN TEMPERATURE FOR PROVIDING AN OUTPUT VOLTAGE IN SAID OUTPUT CIRCUIT REPRESENTING SAID TEMPERATURE TO BE MEASURED WITHOUT AFFECTING SAID METER.
Specification
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- Resources
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Current AssigneeDonald V. Richardson
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Original AssigneeDonald V. Richardson
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InventorsRichardson, Donald V.
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Application NumberUS04/327,898Time in Patent Office1,189 DaysField of SearchUS Class Current374/181CPC Class CodesG01K 7/021 Particular circuit arrangem...
