| 摘要 |
PROBLEM TO BE SOLVED: To provide a Coriolis mass flowmeter, capable of measuring a mass flow with high accuracy in real time without an interruption due to acquisition of the correction value, by previously acquiring an error correction value for correcting a phase error of detection signals dependent on a temperature and a frequency in an input path section, and by correcting an error in the input path section by using the error correction value when the mass flow is normally measured. SOLUTION: The Coriolis mass flowmeter, vibrating a fluid pipe 1 for flowing a to-be-measured fluid, detecting a vibration generated on the upstream side and the downstream side of the fluid pipe by first and second vibration detectors 2, 3, and calculating a flow rate of the to-be-measured fluid based on a phase difference between the detection signals from the first and second vibration detectors 2, 3, includes a temperature sensor 81 for detecting the temperatures on the upstream side and the downstream side of the input path section to which output signals from the first and second vibration detectors 2, 3 are input and a corrector 7 for correcting the phase error of the detection signals input from the upstream side and the downstream side of the input path section based on the temperatures detected by the temperature sensor. COPYRIGHT: (C)2011,JPO&INPIT
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