Abstract: An electronic module (1) for connection of sensors or actuators to a bus line, with an electronic unit, with several jacks (3) for connection of electrical lines (4), and with one jack (5) and one plug (6) for connection of two bus lines (7). The electronic module (1) is especially well suited for use in the hygiene or foodstuffs fields since there is at least one mounting foot (9) for mounting of the electronic module (1) on a support surface (10) and that the housing (2) is made such that the edge area (14) of the housing bottom (12) is further from the support surface (10) than is the area of the housing by the mounting foot (9).

Abstract: An inductive proximity switch is described with a housing (1) which consists of a nonmagnetic, high-grade steel, preferably a housing (2) consisting of VA steel, with a transmitting coil (2), with two receiving coils (3, 4) which are connected in series in opposite directions and which are located symmetrically to the transmitting coil (2), and with an evaluation circuit (5) which is connected to the receiving coils (3, 4). It applies to the illustrated inductive proximity switch as claimed in the invention that at a given size it has a relatively large operating distance and that the operating distance is largely stable, especially is largely independent of temperature, essentially in that on the back (7) of the receiving coils (3, 4) which is opposite the influence side (6) there is a predamping element (8) and the predamping properties of the predamping element (8) at least approximately correspond to the predamping properties of the housing (1) on the influence side (6).

Abstract: A ceramic pressure measurement cell for use in a sensor for static and/or dynamic monitoring of the pressure of a liquid or flowable medium which includes a base body and a membrane connected to the base body such that one side of the membrane is in contact with the medium to be monitored. The pressure measurement cell has high chemical resistance and high temperature resistance for a plurality of chemicals which is achieved by applying at least one plastic film on the side of the membrane in contact with the medium.

Abstract: A pressure sensor for static and/or dynamic pressure measurement of a liquid, flowable, or gaseous medium is described, with a housing (2) and with a pressure measuring cell (3), on the side facing the medium an opening (4) being formed through which one side (5) of the pressure measuring cell (3) is directly or indirectly in contact with the medium to be monitored, and the pressure measuring cell (3) converting the pressure to be monitored into a proportional measurement signal by means of an electromechanical converter. The pressure sensor as claimed in the invention can have both a small outside diameter and can also be economically produced by the housing (2) sitting on the pressure measuring cell (3) and the housing (2) and the pressure measuring cell (3) being connected to one another on the face side so that the pressure measuring cell (3) is at least in part a component of the outer surface of the pressure sensor (1) and thus is not surrounded by the housing (2).

Abstract: A capacitive proximity switch for detecting the change in the capacitance relative to a setpoint capacitance by the approach or retreat of an object in the sensitive area of a proximity switch, especially for use in the door handle of a motor vehicle, provides reliable error detection and error suppression at a fundamentally high sensitivity of the capacitive proximity switch by utilizing an evaluation unit that evaluates a measured value of the change in capacitance over time and depending on the time behavior of the measured value activates changes the operating threshold from a first threshold (which can be caused by a false object coming into or out of the sensitive area of the proximity switch) to a higher second threshold which can be reached only at a relatively greater change in capacitance caused by a target object coming into or out of the sensitive area of the proximity switch.

Abstract: A device for measurement and detection of the level of a medium in a container with a sensor element, with a reference element and an electrical circuit which contains at least one AC voltage source and an evaluation unit, the sensor element and the reference element being arranged such that the medium to be measured or detected influences the impedance between them. The capacitive level measurement and detection device has an AC voltage source that supplies a high-frequency voltage or a voltage with high frequency voltage portions. The circuit which has the AC voltage source, the sensor element and the reference element has an impedance which is as low as possible. The electrical circuit can have an amplifier, a timer, a pulse shaper, a first synchronous rectifier, a first I/U converter, a microcontroller, a reference impedance, a second synchronous rectifier and a second I/U converter.

Abstract: A housing for holding electrical and/or electronic components with a housing opening and with an entry fitting which is rotationally located in the housing opening, the entry fitting having a cylindrical holding part in which an annular groove is formed, and being held by a fastener in the housing. In the housing, the entry fitting can be securely attached to the housing with simple means and installation of the entry fitting, with the housing otherwise closed, is possible in that, for axially securing the entry fitting in the housing opening, there is an open plastic snap ring which is provided with a feed bevel which is guided in the annular groove, and which, in the installed state of the entry fitting, is locked at least partially in a groove in the housing opening.

Abstract: A measurement device with a cylindrical housing (2), with a sensor element and with an adjustment element (6) made, for example, as a potentiometer, for setting at least one parameter of the measurement device. The measurement device (1) is especially easily and still accurately and reproducibly settable by there being at least one rotary adjustment ring, the adjustment ring being made as a housing sleeve (7) for setting the parameter.

Abstract: A mounting device for contactlessly-operating proximity switches includes a continuous cylindrical or cuboidal recess for holding the proximity switch which is formed by at least two legs. The mounting device can also include at least one through pocket, connected to the recess, into which an actuating tool can fit. The recess of the mounting device, when in a relieved state, has a smaller diameter than the proximity switch which is to be mounted. Additionally, the recess can be spread into an enlarged state by the actuating tool being positioned into the pocket and turned.

Abstract: A process for determining the position of an influencing element, using an inductive position sensor, several coils, a capacitor, an amplifier element, at least one changeover switch and an evaluation unit, a selected one of the coils and the capacitor forming a tuned circuit and the tuned circuit and the amplifier element forming an oscillator. Each coil is connected in succession to the capacitor and its impedance measured by the evaluation unit as a function of the position of the influencing element relative to the coil and that coil which is able to determine the location of the influencing element is determined. In further operation, only the impedance of the determined coil or of the tuned circuit formed therewith is measured and used to determine the position of the influencing element, and if the impedance of determined coil changes beyond a threshold amount, the impedance of at least one other coil or tuned circuit is measured.

Abstract: An oscillator circuit for a sensor, with a tuned circuit (2) and an operational amplifier (3), the electrical oscillation of the tuned circuit (2) is capable of being tapped between a first terminal (4) and a second terminal (5) of the tuned circuit (2), and the first terminal (4) of the tuned circuit (2) being connected to the noninverting input of the operational amplifier (3) and the output (6) of the operational amplifier (3) is fed back to the noninverting input of the operational amplifier. The oscillator circuit is designed to improve the dynamic behavior of the oscillator circuit by the second terminal (5) of the tuned circuit (2)—at least in terms of AC voltage—being directly connected to the inverting input of the operational amplifier (3).

Abstract: A housing for holding electrical and/or electronic components with a housing opening and with an entry fitting which is rotationally located in the housing opening, the entry fitting having a cylindrical holding part in which an annular groove is formed, and being held by a fastener in the housing. In the housing, the entry fitting can be securely attached to the housing with simple means and installation of the entry fitting, with the housing otherwise closed, is possible in that, for axially securing the entry fitting in the housing opening, there is an open plastic snap ring which is provided with a feed bevel which is guided in the annular groove, and which, in the installed state of the entry fitting, is locked at least partially in a groove in the housing opening.

Abstract: A circuit arrangement is described for selectively generating an analog current output value or an analog voltage output value as a function of an analog input value. Optionally, the analog current output value or the analog voltage output value may also be a function of an input base value or a signed input correction value. The circuit arrangement includes a current control unit, a voltage control unit, a current output source is triggered by the current control unit, and a voltage output source triggered by the voltage control unit. The current output source and voltage output source of the circuit arrangement may be triggered in parallel and are connected in series on the output side.

Abstract: An electronic switching device, which operates without contact, includes a single sensor element (1), a clock generator, which can be provided internally or which can be connected externally, an evaluation circuit (2), and an electronic or electromechanical switch (3), which is provided on an output side. The evaluation circuit (2) includes diversity processing units (4, 5), and a checking unit (6), wherein an output signal of the sensor element (1) is delivered in succession to the processing units (4, 5), and that output signals of the processing units (4, 5) are checked for consistency by the monitoring unit (6). Advantageously, with only a single sensor element (1), category 4 of EN 954-1 or safety level SIL 3 of EN 61508 requirements can be achieved.

Abstract: An optoelectronic sensor, especially a reflection photoelectric barrier and a reflection light sensing device, for detection of an object (2) in a monitored area, with a housing (3) with transmitting and receiving optics (6) and with an evaluation circuit (10). The optoelectronic sensor has an especially simple structure in that there is only one single optoelectronic transmitting and receiving component (14) which sequentially acts as both the opto-transmitter and the opto-receiver in succession in time.

Abstract: A capacitive proximity switch for detecting the change in the capacitance relative to a setpoint capacitance by the approach or retreat of an object in the sensitive area of a proximity switch, especially for use in the door handle of a motor vehicle, provides reliable error detection and error suppression at a fundamentally high sensitivity of the capacitive proximity switch by utilizing an evaluation unit that evaluates a measured value of the change in capacitance over time and depending on the time behavior of the measured value activates changes the operating threshold from a first threshold (which can be caused by a false object coming into or out of the sensitive area of the proximity switch) to a higher second threshold which can be reached only at a relatively greater change in capacitance caused by a target object coming into or out of the sensitive area of the proximity switch.

Abstract: A circuit arrangement for detecting the capacitance or capacitance change of a capacitive circuit element or component, in which there is a capacitive noise voltage compensation element, which corresponds to the sensor capacitor, represented as a noise voltage compensation capacitor, and a noise voltage compensation electrode of the noise voltage compensation capacitor, which corresponds to the first electrode of the sensor capacitor, is connected to the second electrode of a storage capacitor. The noise voltage compensation capacitor can be influenced in the same way as the sensor capacitor by the LF noise voltage. In this way, the adulteration of the measurement result by LF noise voltages which otherwise occurs no longer takes place.

Abstract: A mounting device for contactlessly-operating proximity switches includes a continuous cylindrical or cuboidal recess for holding the proximity switch which is formed by at least two legs. The mounting device can also include at least one through pocket, connected to the recess, into which an actuating tool can fit. The recess of the mounting device, when in a relieved state, has a smaller diameter than the proximity switch which is to be mounted. Additionally, the recess can be spread into an enlarged state by the actuating tool being positioned into the pocket and turned.

Abstract: A electrical unit consisting of a proximity switch and a cable terminal part is described, where the proximity switch has an outside housing and an insulation part, positioned on one end face of the outside housing and having a terminal element with terminals which lead to the outside. The terminals of the terminal element include terminal sockets. The cable terminal part includes a cable and a connecting part, and the cable is mounted in the connecting part and the ends of the leads of the cable are electrically connected to the terminal sockets of the terminal element. The electrical unitcable terminal part also has a cap which surrounds at least the connecting part and is attached to the proximity switch.

Abstract: A mounting device for contactlessly-operating proximity switches includes a continuous cylindrical or cuboidal recess for holding the proximity switch which is formed by at least two legs. The mounting device can also include at least one through pocket, connected to the recess, into which an actuating tool can fit. The recess of the mounting device, when in a relieved state, has a smaller diameter than the proximity switch which is to be mounted. Additionally, the recess can be spread into an enlarged state by the actuating tool being positioned into the pocket and turned.