Chromatographic System Temperature Control System
First Claim
Patent Images
1. A chromatographic temperature control system, 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 a first temperature sensor signal at the first temperature sensor input and to construct a first actual time-temperature profile;
the processor adapted to receive a 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 a first chromatographic component;
the processor adapted to receive a second time-temperature profile for a second chromatographic component selected from the group of the first time-temperature profile and a first actual time-temperature profile of the first chromatographic component;
the processor having a first power supply control for controlling a first output from a 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 second 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; and
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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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.
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Citations
6 Claims
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1. A chromatographic temperature control system, comprising:
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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 a first temperature sensor signal at the first temperature sensor input and to construct a first actual time-temperature profile; the processor adapted to receive a 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 a first chromatographic component; the processor adapted to receive a second time-temperature profile for a second chromatographic component selected from the group of the first time-temperature profile and a first actual time-temperature profile of the first chromatographic component; the processor having a first power supply control for controlling a first output from a 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 second 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; and 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, 5)
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6. A method for controlling at least two chromatographic components in a chromatographic system, comprising:
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determining a power/temperature relationship for a first component; determining a power/temperature relationship for a second component; receiving a time/temperature profile for the first component; receiving an input whether a time/temperature profile for the second component will track an actual time/temperature profile of the first component; applying power to the first component to alter the temperature of the first component according to the power-temperature relationship for the first component; obtaining a temperature measurement of the first component; constructing an actual time-temperature profile of the first component; adjusting the power supplied to the first component to alter the temperature of the first component according to the power-temperature relationship for the first component as determined by the temperature measurement of the first component; applying power to the second component to alter the temperature of the second component according to one of the power-temperature relationship for the first component and the actual time-temperature profile of the first component; obtaining a temperature measurement of the second component; and adjusting the power supplied to the first component to alter the temperature of the second component according to one of the power-temperature relationship for the first component and the actual time-temperature profile of the first component as determined by the temperature measurement of the second component.
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Specification