| 摘要 |
PROBLEM TO BE SOLVED: To provide a volumetric flowmeter and a probe for detecting a flow rate which enables accurate measurement of a flow rate and the minimization of the apparatuses. SOLUTION: A volumetric flowmeter 2 is provided with a pair of rotors 50 and 60 which rotates about axes A and B mutually parallel in contact with a wall surface of a chamber while contacting each other on circumferential surfaces 55 and 65. At least one 50 or 60 of the pair of rotors 50 and 60 comprises a permanent magnet structural body so that a magnetostatic attraction interacts on circumferential surfaces 55a and 65a on which the pair of rotors 50 and 60 contact each other.
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