Sensor casing comprising a head part with a sensor chamber for reception of a sensor and a connecting part , which adjoins the head part , with a terminal chamber for reception of a terminal connecting block, wherein - the head part has in a rear wall adjoining the connecting part a passage opening for cable and/or plug passage into the sensor chamber , - the connecting part is connected with the head part by way of connecting means , - the connecting part has a first side wall, which adjoins the rear wall of the head part , with a passage opening, which at least overlaps the passage opening of the head part , for cable and/or plug passage from the sensor chamber into the terminal chamber and - the connecting part has a second side wall with an entry opening for cable and/or plug passage into the terminal chamber , characterised in that - a plug connecting part by which an electrical connection between the sensor, which is arranged in the head part , and the terminal connecting block is producible is arranged in the terminal chamber , - the plug connecting part comprises a base body , which consists of an electrically insulating material, at least two contact means , which consist of an electrically conductive material, for electrical contact-making with the sensor and at least two contact surfaces , which consist of an electrically conductive material, for connection with the terminal connecting block, - the contact means are constructed as contact pins or as contact sleeves of a plug connection for producing an electrically operative connection with a plug connecting counter-member of the sensor, - at least two contact means are each in electrically operative connection with a respective contact surface and - the contact surfaces are arranged at a mutual spacing on a first side surface (26.3) of the base body , wherein the first side surface (26.3) of the base body is configured as a planar surface. - the head part has in a rear wall adjoining the connecting part a passage opening for cable and/or plug passage into the sensor chamber , - the connecting part is connected with the head part by way of connecting means , - the connecting part has a first side wall, which adjoins the rear wall of the head part , with a passage opening, which at least overlaps the passage opening of the head part , for cable and/or plug passage from the sensor chamber into the terminal chamber and - the connecting part has a second side wall with an entry opening for cable and/or plug passage into the terminal chamber , characterised in that - a plug connecting part by which an electrical connection between the sensor, which is arranged in the head part , and the terminal connecting block is producible is arranged in the terminal chamber , - the plug connecting part comprises a base body , which consists of an electrically insulating material, at least two contact means , which consist of an electrically conductive material, for electrical contact-making with the sensor and at least two contact surfaces , which consist of an electrically conductive material, for connection with the terminal connecting block, - the contact means are constructed as contact pins or as contact sleeves of a plug connection for producing an electrically operative connection with a plug connecting counter-member of the sensor, - at least two contact means are each in electrically operative connection with a respective contact surface and - the contact surfaces are arranged at a mutual spacing on a first side surface (26.3) of the base body , wherein the first side surface (26.3) of the base body is configured as a planar surface. <EOS>