Method for measuring flow within an open tube
AssigneesTakao Tsuda, Chemco Scientific Co., Ltd., Motonori Munesue
InventorsTakao Tsuda, Motonori Munesue
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Abstract
A change in physical properties of a fluid within an open tube which is caused by heating an arbitrary portion in the open tube by heating means is detected by using a detector disposed with a predetermined spacing from the arbitrary portion, thereby measuring the flow in the open tube. The present invention provides a method for measuring flow within an open tube, in which a mechanical error and contamination of a passage do not occur, as a method for measuring flow within an open tube having a very small diameter provided for the separation analysis field and chemosynthesis field.
Claims40
A method for measuring flow within an open tube having no insulating layer comprising:
- heating an arbitrary portion in the open rube by heating means to make a change in physical properties of a fluid within the open tube;
- providing an optical detector disposed with a predetermined spacing from the arbitrary portion;
- and
- detecting the change by using the optical detector to measure the flow within the open tube.
A method for measuring flow within an open tube having no insulating layer comprising:
- heating an arbitrary portion in the open tube by heating means to make a change in physical properties of a fluid within the open tube;
- providing an optical detector disposed with a predetermined spacing from the arbitrary portion;
- detecting the change by using the optical detector to measure the flow within the open tube;
- and
- performing a computing process of the flow by a computer system to obtain a flow signal.
A method for measuring flow within an open tube comprising:
- heating an arbitrary portion in the open tube by heating means to make a change in occurrence of bubbles of a fluid within the open tube;
- providing a detector disposed with a predetermined spacing from the arbitrary portion;
- and
- detecting the change by using the detector to measure the flow within the open tube.
A method for measuring flow within an open tube comprising:
- heating an arbitrary portion in the open tube by heating means to make a change in occurrence of bubbles of a fluid within the open tube;
- providing a detector disposed with a predetermined spacing from the arbitrary portion;
- and
- detecting the change by using the detector to measure the flow within the open tube;
- and
- performing a computing process of the flow by a computer system to obtain a flow signal.
Dependencies are inferred from the claim text.