Abstract: A temperature sensor having a support tube with a distal end having a first distal opening, with a proximal end having a first proximal opening and with a channel extending between the openings. The temperature sensor further comprises a sensing element, which is inserted through the first proximal opening into the channel and passes through it, so that a measuring tip of the sensing element passes through the first distal opening and protrudes beyond the distal end of the support tube, at least in sections. The support tube has a first fastening area on or near the distal end and a second fastening area on or near the proximal end. The sensing element is directly or indirectly tightly sealed to the support tube by solder joints on the first and second fastening areas.

Abstract: An adapter (1) is proposed for measuring a physical state variable of a medium in a system (15) by means of a sensor. The adapter (1) has a descender tube closed towards the medium (2) which can be inserted into the medium through an opening (5) and contains the sensor and a flange plate (3) having a central recess and that can be sealingly connected with a connecting flange (5A). The descender tube (2) is sealingly fitted in the flange plate (3). The sealing fitting of the descender tube (2) in the flange plate (3) results from a temperature difference being established between the descender tube (2) and the flange plate (3), wherein the descender tube (2) is inserted into the flange plate (3), and then temperature equilibrium established between the descender tube (2) and the flange plate (3) in order to obtain a sealing press-fit connection between the descender tube (2) and the flange plate (3). The production of such an adapter is less complex and faster than with welding.

Abstract: A gauge includes a pipe section with a flattened section in which an opening through a wall of the pipe is provided, an adapter disposed in the opening, the adapter being adapted to receive a measuring probe, wherein the adapter fills the opening and is attached to the pipe section through a material fusion between the adapter and at least one of the pipe wall in the opening and a surface of the flattened section.

Abstract: The invention relates to a reactor in which the gas is introduced by a gas feed pipe by at least one tube membrane. The tube membrane consists of a hollow cylinder with perforations or of a metal fabric on which a silicone hose is placed. On the silicone hose there is a fabric reinforcement to which another silicone membrane or a silicone rubber layer is applied.

Abstract: The support material (27) in the reactor is uniformly subjected, over the height of the reactor bed, to a gas flow ensuring supply and evacuation. The biological film reactor (22) can be fed with oxygen, hydrogen and/or carbon dioxide. The reactor (22) is in the form of a fluidized bed and has an inlet (42) near the floor of the reactor and an outlet (33) near the top. Located in the fluidized bed (32) between a distribution network (4) for the inlet water and the outlet (33) is a material exchanger (15) consisting of a support frame (20) on which is fitted a thin-walled pipe (26) of roughly helicoidal shape, made of non-porous plastic and having its turns (34) spaced at intervals. The pipe is connected to a gas supply device (35). An absorber (12) can be connected to the gas supply line (36).