Analyzer and control method for locking analyzer columns
AssigneeHitachi High-Tech Corporation
InventorsYu Iijima, Yusuke Shimizu, Shuhei Yamamura, Yushi Harada
Life of this patent
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Abstract
An analyzer capable of preventing unintended removal of a separation column is provided. A liquid chromatograph includes: a plurality of separation columns, and that are connected in parallel and removable; a plurality of analysis flow passages that are respectively connected to the plurality of separation columns and configured to allow a sample to flow through each of the plurality of separation columns; a lock mechanism that is configured to restrict removal of the separation columns and other than the separation column to be removed; and a control device that is configured to control the lock mechanism.
Claims13
An analyzer, comprising:
- a plurality of separation columns that are connected in parallel and are removable;
- a plurality of analysis flow passages that are respectively connected to the plurality of separation columns and configured to allow a sample to flow through each of the plurality of separation columns;
- a lock mechanism that is configured to restrict removal of the separation columns other than the separation column to be removed;
- a control device that is configured to control the lock mechanism;
- a first sensor configured to detect connection of the analysis flow passage to a first end of the separation column;
- and
- a second sensor configured to detect disconnection of the analysis flow passage from a second end of the separation column, wherein
- the control device performs the restriction by the lock mechanism at a time of detection by either the first sensor or the second sensor, and
- the control device releases the restriction by the lock mechanism by using detection of an end of an analysis in the separation column as a trigger.
An analyzer, comprising:
- a plurality of separation columns that are connected in parallel and are removable;
- a plurality of analysis flow passages that are respectively connected to the plurality of separation columns and configured to allow a sample to flow through each of the plurality of separation columns;
- a lock mechanism that is configured to restrict removal of the separation columns other than the separation column to be removed;
- and
- a control device that is configured to control the lock mechanism, wherein
- connection between the separation column and the analysis flow passage is released by releasing the lock mechanism,
- the analysis flow passages are connected to one end and the other end of the separation column, respectively,
- the analyzer further comprises:
- a first sensor configured to detect connection of the analysis flow passage to the one end side;
- and
- a second sensor configured to detect disconnection of the analysis flow passage to the other end side, and
- the control device performs the restriction by the lock mechanism at a time of detection by either the first sensor or the second sensor.
A control method for an analyzer, comprising:
- a lock step of restricting, by a lock mechanism, removal of separation columns other than a separation column to be removed among a plurality of separation columns that are connected in parallel and are removable;
- releasing the restriction by the lock mechanism by using detection of an end of an analysis in the separation column as a trigger;
- detecting, by a first sensor, connection of the analysis flow passage to a first end of the separation column;
- and
- detecting, by a second sensor, disconnection of the analysis flow passage from a second end of the separation column;
- wherein the restriction by the lock mechanism is performed at a time of detection by either the first sensor or the second sensor.
Dependencies are inferred from the claim text.