Chromatographic system temperature control system
First Claim
Patent Images
1. A chromatographic system, comprising:
- a first chromatographic component selected from the group consisting of a transport line, a valve, a sample loop, a column, and a detector;
a second chromatographic component selected from the group comprising a transport line, a valve, a sample loop, a column, and a detector;
a first electrically-controlled heating element associated with the first chromatographic component;
a second electrically-controlled heating element associated with the second chromatographic component;
a first temperature sensor associated with the first chromatographic component, the first temperature sensor generating a first temperature sensor signal;
a second temperature sensor associated with the second chromatographic component, the second temperature sensor generating a second temperature sensor signal;
a power supply;
a temperature controller, the temperature controller having a processor, a first electrically-controlled heating element output, a second electrically-controlled heating element output, a first temperature sensor input, and a second temperature sensor input;
the processor adapted to receive the first temperature sensor signal at the first temperature sensor input and to construct a first actual time-temperature profile;
the processor adapted to receive the second temperature sensor signal at the second temperature sensor input and to construct a second actual time-temperature profile;
the processor adapted to receive a first time-temperature profile for the first chromatographic component;
the processor adapted to receive a second time-temperature profile for the second chromatographic component selected from the group of the first time-temperature profile and the first actual time-temperature profile of the first chromatographic component;
the processor having a first power supply control for controlling a first output from the power supply to the first electrically-controlled heating element output;
the processor having a second power supply control for controlling a second output from the power supply to the first electrically-controlled heating element output;
the processor adapted to alter the first output from the power supply so the first actual time-temperature profile approaches the first time-temperature profile;
the processor adapted to alter the second output from the power supply so the second actual time-temperature profile approaches the second time-temperature profile.
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Accused Products
Abstract
A temperature controller for simultaneously controlling the temperatures of a plurality of heating elements for use in chromatographic analysis including columns, detectors, valves, transport lines and other components.
24 Citations
5 Claims
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1. A chromatographic system, comprising:
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a first chromatographic component selected from the group consisting of a transport line, a valve, a sample loop, a column, and a detector; a second chromatographic component selected from the group comprising a transport line, a valve, a sample loop, a column, and a detector; a first electrically-controlled heating element associated with the first chromatographic component; a second electrically-controlled heating element associated with the second chromatographic component; a first temperature sensor associated with the first chromatographic component, the first temperature sensor generating a first temperature sensor signal; a second temperature sensor associated with the second chromatographic component, the second temperature sensor generating a second temperature sensor signal; a power supply; a temperature controller, the temperature controller having a processor, a first electrically-controlled heating element output, a second electrically-controlled heating element output, a first temperature sensor input, and a second temperature sensor input; the processor adapted to receive the first temperature sensor signal at the first temperature sensor input and to construct a first actual time-temperature profile; the processor adapted to receive the second temperature sensor signal at the second temperature sensor input and to construct a second actual time-temperature profile; the processor adapted to receive a first time-temperature profile for the first chromatographic component; the processor adapted to receive a second time-temperature profile for the second chromatographic component selected from the group of the first time-temperature profile and the first actual time-temperature profile of the first chromatographic component; the processor having a first power supply control for controlling a first output from the power supply to the first electrically-controlled heating element output; the processor having a second power supply control for controlling a second output from the power supply to the first electrically-controlled heating element output; the processor adapted to alter the first output from the power supply so the first actual time-temperature profile approaches the first time-temperature profile; the processor adapted to alter the second output from the power supply so the second actual time-temperature profile approaches the second time-temperature profile. - View Dependent Claims (2, 3, 4)
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5. A temperature controller, comprising
a processor, a first electrically-controlled heating element output, a second electrically-controlled heating element output, a first temperature sensor input, and a second temperature sensor input; -
the processor adapted to receive the first temperature sensor signal at the first temperature sensor input and to construct a first actual time-temperature profile; the processor adapted to receive the second temperature sensor signal at the second temperature sensor input and to construct a second actual time-temperature profile; the processor adapted to receive a first time-temperature profile for the first chromatographic component; the processor adapted to receive a second time-temperature profile for the second chromatographic component selected from the group of the first time-temperature profile and the first actual time-temperature profile of the first chromatographic component; the processor having a first power supply control for controlling a first output from the power supply to the first electrically-controlled heating element output; the processor having a second power supply control for controlling a second output from the power supply to the first electrically-controlled heating element output; the processor adapted to alter the first output from the power supply so the first actual time-temperature profile approaches the first time-temperature profile; the processor adapted to alter the second output from the power supply so the second actual time-temperature profile approaches the second time-temperature profile.
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Specification
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Current AssigneeValco Instruments Company, Inc.
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Original AssigneeValco Instruments Company LP
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InventorsStearns, Stanley D., Cai, Huamin, Bishop, Chris, Simpson, Robert, Cowles, Chris S., Ashworth, Dale, Dailey, Douglas
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Primary Examiner(s)West, Paul M.
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Assistant Examiner(s)Shabman, Mark A
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Application NumberUS15/441,372Publication NumberTime in Patent Office844 DaysField of SearchNoneUS Class CurrentCPC Class CodesG01N 2030/3069 electrical resistance used ...G01N 2030/3076 using specially adapted T(t...G01N 2030/3084 ovensG01N 30/30 of temperature
