Method for manufacturing a sensor of a thermal, flow measuring device for measuring mass flow of a medium in a measuring tube and a sensor

A method for manufacturing a sensor of a thermal, flow measuring device for measuring mass flow of a medium in a measuring tube, the method comprising:

• manufacturing a metal jacketing using a metal powder injection molding method, wherein the jacketing has a first blind hole, an open first end, and a closed second end;
• introducing a sensor core into the first blind hole of the jacketing through the first end, wherein the jacketing completely encloses the sensor core;
• and
• sintering the jacketing,
• wherein the sensor core includes:
• a ceramic core having a lateral surface;
• a metal wire wound around the lateral surface of the ceramic core;
• and
• an electrically insulating layer adapted to insulate the metal wire electrically from the jacketing.

A sensor for measuring mass flow of a medium in a measuring tube using a thermal, flow measuring device, comprising:

• a metal jacketing, the jacketing having a first blind hole, an open first end, and a closed second end;
• and
• a sensor core including a ceramic core having a lateral surface and a metal wire wound around the lateral surface of the ceramic core,
• wherein the sensor core is located in the first blind hole such that the jacketing completely encloses the sensor core, and
• wherein the sensor core includes an electrically insulating layer adapted to insulate the metal wire electrically from the jacketing.