| abstract |
The present invention relates to a sensor arrangement (10) for an injection device (100) to determine an axial position of at least one device component (12; 212; 30) of the injection device (100) inside a housing (102) of the injection device (100), the sensor arrangement (10) comprising: - an elongated member (12; 212) located inside the housing (102), extending in an axial direction (1, 2) and having at least a first section (12a; 212a) and a second section (12b, 12c, 12c; 212b, 212c, 212c) of different magnetization and being separated in axial direction (1, 2), - at least one magnetic sensor element (22.1, 22.2, 22.3) attached to the housing (102) to detect the axial position of at least one of the first and second sections (12a, 12b, 12c, 12d; 212a, 212b, 212c, 212d). |