Patent ID: 7201046

Claim:
A flowmeter, comprising: a heat-sensitive resistor a heat-radiating device, controlled according to heat sensed by said heat-sensitive resistor, such that heat radiated by said heat-radiated device is representive of air flow rate, wherein said heat-sensitive resistor measures an ambient temperature to compensate for a heated temperature of said heat-radiating device, an auxiliary passage in which said heat-radiating device and said heat-sensitive resistor are arranged and through which a part of air flowing through an intake passage flows in and out, and a module housing defining said auxiliary passage; wherein the module housing has a sidewall extending in a direction of flow of said part of air flowing through said intake passage; and wherein a hole is formed in the sidewall of said module housing for communication of said auxiliary passage with said intake passage near each of or one of said heat-radiating device and said heat-sensitive resistor.