| 摘要 |
PROBLEM TO BE SOLVED: To provide a temperature sensor capable of further improving thermal response properties as a temperature sensor for measuring temperature of an EGR (Exhaust Gas Recirculation) gas, or the like. SOLUTION: The temperature sensor includes: a closed-end cylindrical metal tube 2; a heat-sensitive element 4 which is installed on an inner surface of the bottom of the metal tube 2 and on which a pair of terminal electrodes is formed; and a pair of lead wires 5 connected to the pair of terminal electrodes. A through-hole 2a is formed at the bottom of the metal tube 2 and the heat-sensitive element 4 is installed for blocking the through-hole 2a, thus exposing at least one portion of the heat-sensitive element 4 to the outside at one end of the metal tube 2 for enabling contact with an atmosphere gas, such as an external exhaust gas, directly, and hence improving thermal response properties. COPYRIGHT: (C)2011,JPO&INPIT |
