Abstract: The invention relates to a respiratory mask comprising a mask body (2), a sealing edge (3) and an inhalation device. Said device can be improved such that gas can be evacuated from the inhalation device without noise disturbance. The aim of the invention is achieved by virtue of the fact that the inhalation device comprises a plurality of lamella-type, partially overlapping membrane elements (8) which can be unfolded by the respiratory gas flow and which are arranged on the mask body (2).

Abstract: A detection system with a measuring head, which has a mount for at least one interchangeable sensor, with a component, which is located at the sensor and receives information on the sensor and transmits same to a detection means at the measuring head. Wireless transmission of the sensor information to the measuring head is provided wherein the component is a passive transponder that can be read by supplying external energy in a wireless manner. The transducer includes a data code carrier, in which the sensor information is stored. The detection means has means for supplying the external energy and means for receiving the sensor information.

Abstract: A humidifying system particularly for incubators and a process for humidifying incubators is disclosed. The system includes a float valve with a sleeve-shaped float housing with a float body axially displaceable therein as well as a throttle valve influencing the flow of liquid. The throttle valve is actuated depending on the relative movement of the float body in relation to the float housing, and by the external diameter of the float body and the internal diameter of the float housing being selected to be such that a capillary gap wetted with liquid is present. With this construction, the reference level for the setting of the liquid level remains unchanged due to the float valve being designed as a hollow float body axially displaceable in a float housing with a liquid-filled, annular capillary gap between the float body and the float housing.

Abstract: An electrochemical oxygen sensor with a measuring electrode, an atmospheric oxygen electrode as a reference electrode, and an auxiliary electrode in an electrolyte is improved such that a stable measured signal is obtained even during changes in the position of the measuring cell. To accomplish this, the auxiliary electrode is arranged in the vicinity of the measuring electrode and a protective electrode is provided between the measuring electrode and the auxiliary electrode.

Abstract: A gas filter media with a parallel layer structure, which comprise individual layers of adhesive and adsorbent particles, wherein the thermoplastic adhesive is solvent-free and is preferably based on polypropylene or polyethylene. Using the manufacturing process according to the present invention, it is possible to intentionally prepare gas filter media with adjustable packing density and pressure drop. The gas filter media according to the present invention can be used in respirator filters, room air filters, in ventilation filters for vehicles, or in apparatus filters.

Abstract: A laser array for determining the concentrations of gases. A simply acting device and a corresponding process are provided, which make possible a high signal resolution by reducing the interferences without prolonging the measurement time. The interferences occurring in the laser array are reduced by the laser source being set to perform longitudinal oscillations in the direction of the optical axis. These oscillations preferably have a sinus or sawtooth shape, and a frequency in the range of 10 to 1,000 Hz that does not otherwise occur in the laser array and an oscillation amplitude corresponding to one fourth to a multiple of the wavelength of the radiation of the laser source.

Abstract: A device for detecting and identifying wearable identification units (20) for users at a predetermined distance around a central station (2). The central station (2) has a transmitter (4) and a receiver (6) for electromagnetic signals and a control unit (8), which initiates the sending of a polling signal at predetermined time. The time may be based on multiples of intervals.

Abstract: The present invention pertains to an electrochemical gas sensor, which has an electrode system for the measurement and is directly coupled with the environment via a gas inlet. To avoid fault liability and incorrect measurements in the case of rapid changes in atmospheric humidity, a moisture reservoir is provided according to the present invention at the gas inlet, and the moisture reservoir is designed to reversibly exchange moisture with the gas atmosphere surrounding it, following the relative humidity of the gas atmosphere, in order to buffer or damp variations in the relative humidity of the gas atmosphere acting on the electrode system. The moisture reservoir may have, e.g., a container body, whose walls have moisture-permeable areas, which face the gas atmosphere in the gas sample volume or the gas diffusing into it, and in which hygroscopic substances are contained.

Abstract: A codable gas detection system with at least one interchangeable gas sensor (2), which has standardized plug-type connections (5,6) between the gas sensor (2) and the measuring device (1), but is also able to prevent measured values of an unauthorized gas sensor (2) from being processed. Each gas sensor (2) contains a memory (3) with gas sensor-specific data and is connected via a line to the measuring device (1) with a first calculating and evaluating unit (7), to a downstream memory (8) and preferably to an alarm device (10). Via the second plug-type connection (5), the sensor element (4) proper is connected to a contacting unit (9) in the measuring device (1), and the contacting unit (9) is connected to the first calculating and evaluating unit (7), on the one hand, and to a downstream, second calculating and evaluating unit (11) for the measured value evaluation proper, on the other hand.

Abstract: An infrared optical gas-measuring system with two infrared radiation sources (1, 2) and with at least one multispectral sensor (5). The system is suitable for determining the concentrations of different components of a gas flow. The two infrared radiation sources (1, 2) radiate in different spectral ranges with two different cycle frequencies f.sub.1, f.sub.2. The rays emitted are first passed through a radiation coupler (3), after which they pass through the gas flow to be measured, which is limited by windows (8), at right angles to the direction of flow. The rays finally enter a multispectral sensor (5), of which there is at least one, for measuring the intensity.

Abstract: An incubator for infants with air feed arranged between the lying surface and the housing and with an air return, as well as with a fan and an air heater associated with it. To ensure a uniform temperature in the area of the lying surface and a stable warm air curtain in the area of the longitudinal sides of the incubator, the air feed is designed in the form of free jets using nozzles with diffusors arranged downstream, in the form of slots. Exhaust slots are provided for the air return on both narrow sides of the lying surface.

Abstract: A device with a valve for setting the flow of a flow medium, which has a passage channel with an inlet opening and with an outlet opening for the flow medium, and with a tongue-like valve element, which is arranged in the passage channel. The valve element is adjustable in a rotatably movable manner with an actuating device between two end positions. The device is adapted to users who need the flow medium at different pressure levels by providing a discharge opening branching off from the passage channel. The discharge opening is provided with a diaphragm opening having a predetermined gap geometry. The discharge opening with diaphragm opening is arranged in the range of pivoting of the valve element such that the discharge opening is closed in one of the end positions and the passage channel is switched essentially in the direction of flow at the same time.

Abstract: An electrochemical measuring cell for the simultaneous detection of different gas components in a gas sample, with a plurality of measuring electrodes (4, 5, 6) behind a diffusion barrier (7), with a common reference electrode (8) and counterelectrode (9) in an acid electrolyte, and with a potentiostatic evaluating circuit. Improvements in terms of service life for a sensor for the simultaneous detection of oxygen and carbon monoxide is provided with a reference electrode formed of a sintered mixture of metal and its metal oxide, preferably from the platinum group, the iridium group or gold and the potential of the CO-measuring electrode (5) relative to the reference electrode (8) is set at about 0 to 300 mV, and that of the O.sub.2 -measuring electrode (4) is set at a value between -300 and -800 mV.

Abstract: A valve for a respirator with a closing member, which is located at a valve seat 6 and is actuated by an electric drive 12, is improved in terms of its dynamic properties. A detector for detecting a first electric signal present at the moving drive a simulator for simulating a second electric signal generated at the nonmoving drive are provided. A comparator forms a differential signal between the first electric signal and the second electric signal. A closed action (feed back loop) circuit sets the position of the closing element in relation to the valve seat according to a preset valve p.sub.s. The differential signal is applied to the control circuit are provided.

Abstract: A device for removing at least laughing gas and anesthetic vapor from a gas sample based on a molecular sieve shall be improved such that it possesses good adsorption properties for both gas components. A molecular sieve arrangement is provided, which is flown through from a gas inlet to a gas outlet and comprises a first molecular sieve area with a first pore size between about 0.3 nm and 0.5 nm and a second molecular sieve area with a second pore size between about 0.8 nm and 1 nm.

Abstract: A measuring cell (1) for the analysis of a gas sample by infrared absorption, with a measuring path (2) accommodating the gas sample, which has opposite limiting surfaces (7, 9) enclosing the gas sample, wherein a focusing optical component (8) is present at the first limiting surface (7) and an infrared radiation source and a radiation receiver (4) are arranged in the area of the second limiting surface (9) such that a measuring beam (13) emitted by the radiation source (3) is directed onto the radiation receiver (4) through the optical component, shall be improved such that it be suitable for the detection of gases with a long absorption path. A mirror surface (12) active for the measuring path (2) is present in the area of the second limiting surface (9), and the geometry of the optical component (8) is dimensioned such that there is an at least fourfold pass of the measuring beam (13) in the measuring path (2), utilizing the reflection of the beam on the mirror surface (12).

Abstract: A measuring device for determining the concentration of gases with two identical radiation sources and two radiation detectors, which delivers stable measured values despite the contamination that occurs or the shielding from radiation of the outer optical surfaces exposed to the gases or to mixtures of gases and despite possible mechanical disadjustments. The two radiation detectors are provided with an optical concentrator each for bundling the radiation, and being arranged in a gas-tight housing together with the two identical radiation sources and with a beam splitter. One radiation source is directed through a window that is transparent to infrared light to a plane mirror outside the gas-tight housing, and the beam path reflected by the plane mirror falls through the window that is transparent to infrared light onto the beam splitter.

Abstract: An ultrasonic atomizer for respiration systems, which is integrated in the breathing gas line from and to the patient via two connections. The ultrasonic atomizer is in a gas flow connection with the atomizer chamber to which an aerosol is admitted by a piezo vibrating element for the inhalation via a nonreturn valve. The arrangement bridges over the atomizer chamber for the exhalation via a second nonreturn valve by means of a second, spatially separated gas flow path.

Abstract: A device for generating oxygen by the thermal decomposition of a chemical located in a cartridge housing is improved such that a profile of the oxygen release can be set in a simple manner. To accomplish this a delivery line drawing off the oxygen generated is connected to a longitudinal side of the cartridge housing.

Abstract: An incubator with a first air heater and a first fan is improved in terms of constant air temperature and air humidity in the interior space even after a brief opening of a flap. A second air heater and an associated second fan are additionally provided, whose operation is controlled via a measuring and control unit either as a function of a drop in the air temperature in the interior space of the incubator, which is measured by means of a temperature sensor or as a function of the open status of the flap (as sensed by a switch). An air humidifier module with heater, which is alternatively or additionally integrated in the arrangement, is optionally provided.