Measuring and testing – Volume or rate of flow – Thermal type
Patent
1993-11-15
1994-11-29
Goldstein, Herbert
Measuring and testing
Volume or rate of flow
Thermal type
338312, G01F 168
Patent
active
053679067
ABSTRACT:
An exothermic resistor for use in a hot wire air flow meter, having a wire (2) in the form of a coil made of a metal, a pair of lead wires (3) connected to connections (21) formed at the opposite ends of the coil, and a support member (4) which integrally supports the connections as well as the coil located between the connections. An example of the support member is in the form of a tubular cylinder closed at its both ends. The support member is formed from glass only or formed of a layer of a glass-ceramic-composite material. The hot wire air flow meter is designed to be easely mass-produced and to have improved transient response characteristics with respect to abrupt changes in the air flow rate.
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Miyoshi Tadahiko
Takahashi Ken
Tokuda Hiroatsu
Tsuruoka Shigeo
Goldstein Herbert
Hitachi , Ltd.
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