Abstract: A sensor device includes at least one sensor, a digital signal processor and an amplifier. The at least one sensor is configured to measure a variable physical quantity and provide a raw sensor signal at an output of the at least one sensor. The digital signal processor is configured to preprocess the raw sensor signal output by the at least one sensor into a sensor signal and to further process the sensor signal into a pulse-width-modulated output signal having a duty cycle that is dependent on the measured quantity using a plurality of device-specific correction parameters stored in a memory to convert the sensor signal into the pulse-width modulated output signal. The amplifier is configured to convert the pulse-width modulated output signal into an analog voltage or current signal.

Abstract: A method is useable for operating a sensor assembly for determining relative humidity in radiosondes. The sensor assembly includes a humidity sensor, a temperature sensor and a heating element. It is determined whether humidity is at or above a predetermined humidity limit selected as the limiting humidity with respect to saturation over ice. The humidity sensor is heated, at least temporarily, wherein in a temperature range below 0° C., the humidity sensor is at least temporarily heated by the heating element based on it having been determined that the humidity is at or above the predetermined humidity limit.

Abstract: An electronic arrangement includes a first bias terminal, a ground terminal, a photodiode including an anode terminal and a cathode terminal, and a transimpedance amplifier including an operational amplifier. The electronic arrangement is selectively switchable to a photocurrent measurement mode and a temperature measurement mode. In the photocurrent measurement mode: the anode terminal is connected to a first input of the operational amplifier; the cathode terminal is connected to a second input of the operational amplifier; and the first bias terminal is connected to the first input of the operational amplifier and the anode terminal. In the temperature measurement mode: the anode terminal is connected to the ground terminal; the cathode terminal is connected to the second input of the operational amplifier; and the first bias terminal is connected to the first input of the operational amplifier and disconnected from the anode terminal.

Abstract: An encapsulation device for operating a sensor in an explosive atmosphere includes a receiving space designed to receive the sensor and a protective housing having at least one gas-permeable wall portion that permits gas exchange between an interior space of the encapsulation device and an environment of the encapsulation device through the gas-permeable wall portion. A quenching volume is arranged to extend along an inner side of the protective housing and is filled with a filling material. The quenching volume at least partially surrounds the receiving space. A gas-permeable filter element is disposed between the quenching volume and the receiving space, and bounds the quenching volume with respect to the receiving space.

Abstract: A probe includes a base extending lengthwise between a proximal end and a distal end of the probe. A humidity sensor configured to measure a humidity value is disposed at the distal end. A temperature sensor configured to measure a temperature value has an ambient temperature sensing element that is spaced apart from the humidity sensor by a portion of the base and is disposed between the proximal end and the distal end. An interface disposed at the proximal end is configured to output a data signal indicative of humidity and to receive a power signal for heating the humidity sensor. Electronics is disposed on the base past the interface in a direction away from the proximal end and is coupled to the temperature and humidity sensors. The electronics is configured to provide the data signal to the interface as a function of the temperature humidity values.

Abstract: An electronic arrangement includes a radiation source. A controlled voltage converter is configured to provide a lamp voltage for the radiation source for operating the radiation source in an ON state for a pulse duration, and to regulate the lamp voltage such that a reference voltage at a feedback terminal of the voltage converter is maintained substantially constant. A voltage source is connected to the feedback terminal and configured to provide, via the feedback terminal for acting on the regulation of the voltage converter, a time-dependent control voltage having a predefined time profile. The voltage converter is configured to select a time profile for the lamp voltage as a function of the predefined time profile of the time-dependent control voltage such that a power of the radiation source deviates from a constant power value by no more than 25% during at least 90% of the pulse duration.

Abstract: A sensor device includes a system carrier including at least a first planar support element and a second planar support element. The support elements are disposed in a mounting plane at a distance from one another. An integrated signal-processing component is disposed on the support elements. An encapsulation at least partially encloses the signal-processing component. At least two temperature sensors are integrated within the signal-processing component. Each of the temperature sensors is disposed in a vicinity of a respective one of the support elements.

Abstract: A moisture sensor arrangement including a plate-like semiconductor substrate and an integrated signal processing component disposed on a first side of the semiconductor substrate. The moisture sensor arrangement including a capacitive moisture sensor connected electrically conductively to the integrated signal processing component, wherein the capacitive moisture sensor is disposed on either the first side or a second side of the semiconductor substrate that is opposite the first side of the semiconductor substrate. In addition, the plate-like semiconductor substrate includes 1) plated through-holes, by way of which elements on the first side and the second side of the semiconductor substrate are electrically connectable to one another; and 2) a temperature sensor integrated with the integrated signal processing component.

Abstract: An amperometric gas sensor for determining oxygen content in a gas mixture includes a solid-state electrolyte. A first electrode configured as a cathode and a second electrode configured as an anode are disposed on the solid-state electrolyte and exposed to the gas mixture. The cathode is in contact with the gas mixture without any interposed diffusion barrier and has a design such that a flow of oxygen molecules from the gas mixture to a three-phase boundary between the solid-state electrolyte, the cathode and the gas mixture is limited in a defined manner. A voltage source configured to apply a DC voltage between the electrodes. A measuring device is configured to measure a limiting current flowing between the electrodes as a measure of the oxygen content in the gas mixture.

Abstract: A flow sensor for direct measurement of mass flow that includes a rigid, electrically conductive carrier part and a sensor element that is connected to the carrier part via electrically conductive connections. The sensor element includes a plate-like carrier substrate on which a temperature sensor and a heating element are disposed. The sensor element also includes a stable encapsulation, which partially surrounds the sensor element and the carrier part in form-locking fashion. The sensor element also includes a first region on a top side of the sensor element that is not covered by the encapsulation and a second region of an underside of said sensor element that is not covered by the encapsulation. The mass flow to be measured can circulate around the first region and the second region without hindrance.

Abstract: An amperometric gas sensor for determining oxygen content in a gas mixture includes a solid-state electrolyte. A first electrode configured as a cathode and a second electrode configured as an anode are disposed on the solid-state electrolyte and exposed to the gas mixture. The cathode is in contact with the gas mixture without any interposed diffusion barrier and has a design such that a flow of oxygen molecules from the gas mixture to a three-phase boundary between the solid-state electrolyte, the cathode and the gas mixture is limited in a defined manner. A voltage source configured to apply a DC voltage between the electrodes. A measuring device is configured to measure a limiting current flowing between the electrodes as a measure of the oxygen content in the gas mixture.

Abstract: A moisture sensor arrangement including a plate-like semiconductor substrate and an integrated signal processing component disposed on a first side of the semiconductor substrate. The moisture sensor arrangement including a capacitive moisture sensor connected electrically conductively to the integrated signal processing component, wherein the capacitive moisture sensor is disposed on either the first side or a second side of the semiconductor substrate that is opposite the first side of the semiconductor substrate. In addition, the plate-like semiconductor substrate includes 1) plated through-holes, by way of which elements on the first side and the second side of the semiconductor substrate are electrically connectable to one another; and 2) a temperature sensor integrated with the integrated signal processing component.

Abstract: A circuit configuration for measuring air humidity includes a measuring system which includes an oscillator unit and a signal-processing unit, as well as a frequency-determining impedance, which is determined largely by a parallel connection of a capacitive humidity sensor and a parasitic resistance. The frequency-determining impedance is connected to the oscillator unit, which includes an oscillator having an oscillation frequency that is a function of the frequency-determining impedance. The oscillator unit includes a switchable impedance, which can be connected in addition to the frequency-determining impedance, the oscillator thereby being switchable from a first frequency range to a second frequency range.

Abstract: A sensor system includes a thin-film sensor provided with at least one contact area on the surface thereof, and a printed circuit board provided with at least one contact pad on the surface thereof. The thin-film sensor is arranged in relation to the surface of the printed circuit board such that the surface of the thin-film sensor opposes the surface of the printed circuit board. In order to transmit sensor currents from the thin-film sensor to the printed circuit board, a conductive glue adheres to both the contact area of the thin-film sensor and to the contact pad on the surface of the printed circuit board.

Abstract: A sensor arrangement for detecting fogging on a glass pane, the arrangement including a support plate, a sensor element in thermal communication with the glass pane, wherein the sensor element is arranged on the support plate and is sensitive to moisture and a contact element that thermally couples the sensor element with the glass pane. The contact element is fastened on the support plate so as to enclose the support plate to a large extent in a contact area where the contact element contacts the glass pane.

Abstract: A device for creating a reference humidity that includes a saturation chamber and a condensate cooler in fluid communication with the saturation chamber and arranged downstream of the saturation chamber, wherein the condensate cooler is a fin-type condenser whose arrangement is such that substantially horizontal gas flow through the condensation cooler results. A measuring chamber connected with the condensate cooler, in which a desired reference humidity is definitely set by varying pressures and/or temperatures.

Abstract: A circuit arrangement for capacitive humidity measurement that includes a capacitive element to be measured, a plurality of switch elements, a charge storage element and a control unit electrically connected to the capacitive element, the plurality of switch elements and the charge storage element. The control unit controls the plurality of switch elements so that a number of charging operations and a number of discharging operations of the capacitive element are performed, as well as a parallel charging of the charge storage element takes place, until the charge storage element has been charged to a defined reference value, and a determination of a capacitance of the capacitive element is performed from a determination of the number of charging operations, or of a time until the reference value is reached.