Temperature sensor

A temperature sensor, intended in particular for an electronically controlled fuel injection system of an internal combustion engine, having a carrier body, said carrier body provided with electrical connections, said carrier body being further provided with a temperature-dependent resistor element, said carrier body being arranged to be received in a protective sheath surrounding said temperature-dependent resistor element, characterized in that said protective sheath is arranged to minimize contact between said temperature-dependent resistor element and said sheath, said protective sheath being provided with first and second apertures permitting free access to said temperature-dependent resistor element by a medium whose temperature is to be measured, said first and second apertures extending axially of said protective sheath, said first apertures comprising two apertures disposed in opposed relation to one another, said apertures opening on an end remote from said temperature-dependent resistor element, said second apertures comprising two apertures, at least one of which terminates in a crosspiece near said end, said crosspiece comprising a lock element provided on said protective sheath, and said carrier body and said protective sheath being connected together in a positively-engaged manner, said protective sheath having an elastically deformable end remote from said temperature-dependent resistor element, said carrier body provided with a protruding catch, said protective sheath further having a locking means, whereby said protruding catch and said locking means are brought into engagement when said carrier body is fully inserted into said protective sheath.