| 摘要 |
PROBLEM TO BE SOLVED: To provide a flow measuring apparatus in which an error caused by compressional waves or flow waves is not picked up by a measuring sensor, even when the compressional waves or the flow waves such as pulsations or swells are generated in a fluid as a measuring object, and by which a flow rate can be measured always precisely. SOLUTION: A fixation end member 20 which is e.g. in a check valve shape or the like used to form a node as a wave motion by the compressional waves or the flow waves such as the pulsations or the swells generated in the fluid such as a gas or the like, as the measuring object is installed on the downstream side (or also the upstream side is possible) of the measuring sensor 3. The node (a state that a vibration displacement as a longitudinal wavelike wave motion is nearly zero) by the compressional waves or the flow waves in the fluid as the measuring object is formed in a position in which the member 20 is installed. The flow rate is measured by the measuring sensor 3 arranged at a distance near the node. COPYRIGHT: (C)2003,JPO
|
