| 摘要 |
PROBLEM TO BE SOLVED: To obtain a highly reliable thermal type flowmeter that includes a gas temperature detection unit.SOLUTION: A thermal type flowmeter of the present invention comprises: a sub-passage for capturing and flowing measured gas running in a main passage; a circuit package 400 having a flow rate measuring circuit for measuring a flow rate by performing heat transfer to and from the measured gas flowing in the sub-passage and a temperature detection unit 452 for detecting a temperature of the measured gas; and a case that includes an external terminal for outputting an electric signal representing the flow rate or an electric signal representing a temperature of the measured gas and that supports the circuit package. The circuit package is structured by enclosing the flow rate measuring circuit and the temperature detection unit with resin. The temperature detection unit has a protrusion 424 protruding from a circuit package body. The protrusion has a root that is thicker than its tip, and a root part of the protrusion has a shape thinning gradually toward the tip. |
