摘要:
A circuit configuration for a capacitive touch switch contains at least one sensor circuit with a capacitive sensor element which changes its capacitance value when touched, and an evaluation circuit which is supplied with an output signal from the sensor circuit in order to determine whether the capacitive sensor element is actuated or not. The at least one sensor circuit has a capacitance which is connected in parallel with the capacitive sensor element, and a capacitance/frequency converter which is connected to the parallel circuit containing the capacitance and the capacitive sensor element and generates, at its output, a frequency signal whose frequency depends on the total capacitance of the parallel circuit containing the capacitance and the capacitive sensor element. The evaluation circuit may thus use a significant change in the frequency of the output signal from the sensor circuit to deduce, in a simple manner, that the capacitive sensor element has been touched.
摘要:
A screw vacuum pump, in particular for compression against atmospheric pressure, comprises a pump housing defining a suction chamber. Two meshing screw rotors are arranged in the suction chamber. Further, an overpressure outlet provided, which comprises an overpressure opening in a side wall of the suction chamber. Further, an overpressure valve is arranged in the overpressure outlet. The width (b) of the overpressure opening in the longitudinal direction of the screw rotors is smaller than or equal to a tooth width (B) of the screw rotors.
摘要:
A printing press includes a roller having a first antifriction bearing and a second antifriction bearing. The first antifriction bearing has rolling bodies, a first ring and a second ring. One of the two rings forms an outer ring and the other of the two rings forms an inner ring. Roller sockets are configured as quick action changing devices for receiving the anti-friction bearings during insertion of the roller into the printing press. The first antifriction bearing is configured as an axial floating bearing with a considerable axial movement play of the rolling bodies between the latter and one of the rings. The second antifriction bearing is configured as an axial locating bearing without such a considerable axial movement play. A centering device centers one of the rings relative to the other.
摘要:
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.
摘要:
A method which allows especially the extrapolation of the measured value at the upper and lower end of a measuring range where normally no direct measurement range where normally no direct measurement is possible by superposition of interfering signals, for example by reflection on a radar antenna. In the presence of strong interference signals, for example by reflection of a radar antenna. In the presence of strong interference signals, which are for example caused by the natural resonance of the container or neck in which the measuring device is mounted, the direct level indicator signal can be regularly used if it has a high amplitude caused by a superposition with the interfering signal lies between two interfering signals and does not extend beyond these, the level indicator value can be interpolated by the shift of the signals from the point of reflection. The inventive method automatically adapts itself to a prevailing measuring situation while according to known methods for the user has to decide between a measurement via a shift of EOL signal or a measurement via the direct level indicator echo.
摘要:
The invention relates to a retractable leash for animals, having a housing containing a spring-biased reel in which the remaining length of leash can be taken up and which is stoppable by an actuating mechanism for adjustment of the maximum extension length of the leash as required, and by providing for the slack section of the leash to be taken up automatically by the reel when this maximum extension length is not being used, thus ensuring that the leash is always taut without restricting the animal's freedom of movement unnecessarily.
摘要:
A vacuum pump comprises pumping elements arranged in a pumping chamber. An electric motor drives the pumping element. A frequency inverter is provided for changing the rotational speed of the electric motor. The frequency inverter is arranged in a frequency inverter housing immediately connected to the pump housing. An air cooler and a liquid cooler are arranged in the frequency inverter housing to cool the frequency inverter.
摘要:
In a drive unit for a motor vehicle having a vehicle body, an electric machine which is supported by the vehicle body, a sprung wheel suspension and a wheel supported thereby, and the wheel being drive-connected to a device for transmitting torque between the electric machine and the wheel, the wheel suspension comprises a strut unit and the device for transmitting torque is arranged between the electric machine and the wheel and extends coaxially with respect to the axis of the strut unit so as to form a compact design with small unsprung masses while providing for the possibility of a torque transfer between the electric machine and the wheel.
摘要:
An apparatus (4) for reading out X-ray information stored in a storage phosphor layer (2) includes a support (10) onto which a storage phosphor plate (1) is laid. The storage phosphor plate (1) comprises the storage phosphor layer (2) and a support layer (3) onto which the storage phosphor layer (2) is applied. Furthermore, a controller (12) is provided for processing X-ray information read out from the storage phosphor layer (2). According to the invention, a distance sensor (14, 15) serves to determine a distance of the distance sensor (14, 15) from the storage phosphor plate (1) lying on the support (10), and the controller (12) is designed such that it processes the X-ray information read out from the storage phosphor layer (2) dependently upon the distance determined by means of the distance sensor (14, 15). An unlevelness determined by means of the distance sensor (14, 15) is taken into account by the controller (12) when processing the X-ray information read out. In this way, a good image quality of an X-ray image read out is guaranteed in a technically simple way.
摘要:
The invention relates to an apparatus for monitoring a field device for determining and/or monitoring a physical and/or chemical process parameter of a process medium with a first sealing stage facing toward the process and at least one housing with a predetermined interior volume. The housing is located on the side of the first sealing stage facing away from the process, wherein energy is transferable through the first sealing stage 4 in the direction of the process medium. This energy interacts with the process medium, wherein at least one detector unit is provided in the housing, which unit monitors at least one condition parameter of the interior volume of the housing. A control/evaluation device determines, on the basis of the energy interacting with the process medium, the physical and/or chemical process parameter, and wherein the control/evaluation unit and/or another monitoring unit recognizes and/or seals off and/or issues an alarm, on the basis of the monitored condition parameter in the interior volume of the housing, as soon as the monitored condition parameter in the interior volume of the housing a predetermined limit value.