Abstract: The invention relates to a microwave-operated level meter with a small blind zone, comprising an antenna for transmitting or for transmitting and receiving microwaves, a microwave generator directly located on said antenna, and a transmitter or transmitter and receiver element pointing into the antenna and directly linked with the microwave generator, said transmitter or said transmitter and receiver element being an extension of the connection.

Abstract: A fill level measuring device working with microwaves, having an antenna for transmitting, or for transmitting and receiving, microwaves. The antenna has a metallic outer conductor and a ceramic inner conductor. The inner conductor is secured in a pressure-tight and gas-sealed manner in the outer conductor. A coating of a fluorothermoplastic is provided on the inner conductor or in the outer conductor. The inner conductor is secured in the outer conductor by means of a warm-pressed fit, and the inner conductor and the outer conductor have conical surfaces of equal shape in the region of the pressed fit.

Abstract: A fill level measuring device working with microwaves, having an antenna for transmitting, or for transmitting and receiving, microwaves. The antenna has a metallic outer conductor and a ceramic inner conductor. The inner conductor is secured in a pressure-tight and gas-sealed manner in the outer conductor. A coating of a fluorothermoplastic is provided on the inner conductor or in the outer conductor. The inner conductor is secured in the outer conductor by means of a warm-pressed fit, and the inner conductor and the outer conductor have conical surfaces of equal shape in the region of the pressed fit.

Abstract: The invention relates to an apparatus for determining the filling level of a filling material in a container having a signal production unit which produces measurement signals, having at least one antenna which transmits the measurement signals in the direction of the surface of the filling material and which receives the measurement signals reflected on the surface of the filling material, and having a control/evaluation unit which uses the delay time of the measurement signals to determine the filling level of the filling material in the container. The apparatus allows a filling level measurement device, which operates on the delay-time principle, to be mounted on a container in a cost-effective and simple manner.

Abstract: The invention relates to at microwave-operated level meter with a small blind zone, comprising an antenna (15, 35) for transmitting or for transmitting and receiving microwaves, a microwave generator (23, 45, 59, 61, 91) directly located on said antenna (15, 35), and a transmitter or transmitter and receiver element (25, 47, 60, 85, 93) pointing into the antenna (15, 35) and directly linked with the microwave generator (23, 45, 91), said transmitter or said transmitter and receiver element (25, 47, 60, 85, 93) being an extension of the connection.

Abstract: The invention relates to an apparatus for determining the filling level of a filling material (2) in a container (4) having a signal production unit which produces measurement signals, having at least one antenna (7) which transmits the measurement signals in the direction of the surface (3) of the filling material (2) and which receives the measurement signals reflected on the surface (3) of the filling material (2), and having a control/evaluation unit which uses the delay time of the measurement signals to determine the filling level of the filling material (2) in the container (4).

Abstract: A description is given of an electronic device for use in regions subject to explosion hazards, which is small and light, can be produced cost-effectively and offers a high degree of flexibility, having a housing (1) with a connecting chamber (3), which is designed in accordance with the safety class Ex-d or Ex-e, in which there is arranged a connecting element (6) to which electric lines can be connected, and in which there is arranged a circuit (9) for limiting a current, a voltage and a power which are fed to the device via the lines during operation, the limitation being performed in accordance with the requirements of safety class Ex-i, and having an electronics chamber (4), in which there is arranged an electronic system (11) designed in accordance with the safety class Ex-i, and which can be opened, in which housing (1) the connecting chamber (3) and the electronics chamber (4) are mutually separated, and a pressure-proof electric bushing (10) is provided through which at least one output line of the c

Abstract: For monitoring a predetermined level of a liquid in a container an ultrasonic sensor is fitted on the outer surface of the container wall at a measurement point situated at the height of the level to be monitored, said sensor containing an ultrasonic transducer having a diaphragm in contact with the container wall. The components of the ultrasonic sensor including those of the ultrasonic transducer are grouped together in a sensor block which is releasably connected to an adapter secured to the container wall, this adapter being configured so that it can be secured in any way required to containers of differing shape and/or material.

Abstract: Provision is made for a pressure sensor with a ceramic sensor element (1) which is introduced in a gas-tight manner, having a metallic housing (2) and having a metallic adapter (3) which is arranged between the sensor element (1) and housing (2) and which is connected in a gas-tight manner both to the housing (2) and to the sensor element (1).

Abstract: A transducer assembly for measuring pressure or differential pressure includes an oxide ceramic pressure measurement cell removably retained inside a connection housing by an annular set ring on a first side and by a cup packing located on a second side. The pressure measurement cell is held at a fixed distance inside a connection housing from a connector element. The connection housing removably connects to a main housing, allowing for release and replacement of any of the elements within the assembly, thus enabling adaptation of the device to different applications without recalibration.

Abstract: The measurement of pressures makes it necessary to connect the pressure sensing element physically with the medium to be measured. For this, the sensing element is provided with metallic or nonmetallic connecting flanges. Until now, there existed the disadvantage that the metallic flanges frequently are not resistant to the aggressiveness and/or corrosiveness of the media to be measured. Nonmetallic connecting flanges are resistant to these media, but are not dimensionally stable at high processing temperatures. It is thus suggested to arrange a connecting pin consisting of a polymer plastic that is resistant, to the medium to be measured in a metallic connecting flange in such a way that the medium to be measured may only come in contact with the resistant plastic material, and that the temperature-dependent dimensional stability of the plastic part is insured by an axial and radial support by the metallic flange.

Abstract: Proposed is a device for the analog actuation of a digital setting process, specifically the setting and/or calibration of transducers equipped with microprocessors, with a setting shaft extending through the outside wall of a housing in the interior of which the electrical/electronic components of the transducer are located. The device is formed by a first, analog component and a second, digital component which is in nonpositive connection with the first component. The rotary movement of the first component pivots a cam which is firmly connected with it against the paddle of a rocker switch, causing the paddle to deflect. Associated with the deflection, the rocker motion of the rocker switch about the fulcrum causes a boss arranged on the rocker switch to engage the push button of a push-button switch arranged on a printed circuit board, to switch the push-button switch and to close or open a circuit necessary for setting and/or calibration.

Abstract: A sensor for capacitively measuring the level of material in a container where the sensor extends through an opening in the container and is connected to measuring circuitry. The sensor includes an electrically conductive, tubular member aligned with the opening. An elongated electrically conductive member is in electrical contact with the circuitry and projects through the container opening and the tubular member such that a space is established between the elongated conductive member and the tubular member so that they are electrically insulated from one another. The space is sealed to prevent entry of moisture therein.