Abstract: The present invention relates to a connecting device (100) for connecting a first and a second tube, comprising a sealing sleeve (200), a plurality of support elements (300) and at least two clamping bands (401, 402). In order to form the connection, a first of two end portions (201, 202) of the sealing sleeve (200) receives a tube end portion of the first tube and the second end portion (202) receives a tube end portion of the second tube, which are connected to each other by means of the sealing sleeve (200). The sealing sleeve (200) has an inner face (210) and an outer face (220). The plurality of support elements (300) are disposed along the outer face (220) of the sealing sleeve (200) without being connected to each other. Each support element (300) at least partly consists of or contains a deformable material. Each support element (300) has a first support element contact portion (310) and a second support element contact portion (320).

Abstract: At a reference current source with two transistors and a controlled double current source, the base of the second transistor is connected to the collector of the first transistor, the emitter of the first transistor is connected to a reference point, the first terminal of the controlled double current source is connected to the first transistor, and the second terminal of the controlled double current source is connected to the collector of the second transistor. Either a first resistor is inserted between the base and the collector of the first transistor, and the emitter of the second transistor is connected to the reference point or the first resistor is inserted between the emitter of the second transistor and the reference point, and the base and the collector of the first transistor are connected to one another. A resistor is connected between the base of the first transistor and the reference point and/or a resistor is connected between the collector of the second transistor and the reference point.

Abstract: A thermoelectric level measuring device for measuring the fill level of a container having a filling material therein and a free space above the filling material comprises a series connection of three sensing resistors, the first of which is always surrounded by the filling material, the second of which is intended to be surrounded by the filling material and by the free space and the third of which is always located in the free space and an evaluation circuit connected to each end of the series connection and to the connection points between the sensing resistors.