Abstract: A safety application mobile measuring device (100) includes a control unit (110) and a detection unit (120). The control unit controls changes between a switched-on state and a switched-off state depending on a received detection signal (112). The detection unit monitors, in the switched-off state, whether a switch-on condition (414) is present and outputs the detection signal, which indicates a change into the switched-on state which is to be carried out. The detection unit monitors the switched-on state as to whether at least two switch-off conditions (444, 448) are present and outputs the detection signal, which indicates a change into the switched-off state, which is to be carried out, in the presence of at least two switch-off conditions. At least two detection devices (122, 124) each carry out a detection corresponding to the at least one switch-on condition and to the at least two switch-off conditions.

Abstract: An electrochemical gas sensor measures gaseous components in an air/gas mixture. A measuring electrode and a counterelectrode, with an electrolyte located therebetween, are arranged in the sensor housing. A diffusion barrier is configured to set a gas flow of the gas intended for the concentration determination to the measuring electrode from a surrounding area. The diffusion barrier is located in the sensor housing. At least one gas-permeable, hydrophobic pressure absorption element covers the diffusion barrier and is provided between the diffusion barrier and the measuring electrode, in the interior of the sensor housing and on an inner surface of the sensor housing. The inner surface has a mean roughness depth Rz that is lower than or equal to 2 ?m at least in an area on which the pressure absorption element lies.

Abstract: A control system, for controlling a closed-circuit respirator breathing gas circuit, includes a temperature sensor, a temperature-reading unit and with a control unit. The temperature sensor is configured to send a temperature signal in the presence of a corresponding temperature polling. The temperature signal indicates the temperature currently present in an area surrounding the temperature sensor. The temperature-reading unit is arranged in the closed-circuit respirator at a spaced location from the breathing gas circuit and the temperature sensor, and is configured to trigger the temperature polling at the temperature sensor by sending a polling signal, and to receive the temperature signal sent by the temperature sensor. The control unit is signal connected to the temperature-reading unit and is configured to determine the temperature indicated by the temperature signal in the area surrounding the temperature sensor and to output a control signal as a function of this temperature.

Abstract: A head protection system includes a safety helmet and a fire protection cloth. The safety helmet includes a helmet shell (105) and a holding device (108) to guarantee a distance (A) between a helmet shell inner side (106) and the user head (102). An air path (110) is formed by a plurality of openings (120) of a fastening ring (125) and the distance between the inner side of the helmet shell and the head of the user. The fastening ring is arranged at least in an area of the user forehead of the user. The fire protection cloth has a fastening strap (230) with rigid fastening elements (235) configured to mesh with an opening of the fastening ring to detachably fasten the fire protection cloth to the safety helmet. The rigid fastening elements fill the plurality of openings in the fastened state to close the air path.

Abstract: A device (10), a substance measuring device (100), a process, a computer program, a camera (200) and a cell phone are provided for the unique and individual identification of a substance measuring device (100) of a test subject (300). The device (10) includes an optical identifier (12).

Abstract: A spring bridge (40), for a spring bridge breathing bag plate system (80) of a closed-circuit respirator (100), includes a spring bridge carrier (42) for the arrangement of at least one spring element (82) of a spring bridge breathing bag plate system (80) and at least one fastening element (44) for holding the spring bridge (40) at the closed-circuit respirator (100). The at least one fastening element (44) is a rotating element and/or a sliding element for the rotatable and/or sliding movement of the spring bridge carrier (42) at and relative to the closed-circuit respirator (100). A spring bridge breathing bag plate system (80) is provided for a closed-circuit respirator (100) as well as for a closed-circuit respirator (100).

Abstract: A safe energy supply unit (1) and system, for supplying an electrical device (8) in an explosion-proof area, transmits power from an energy source (9), including a plurality of galvanically isolated individual sources, with a multiple line connection (2) with a plurality of galvanically isolated and individually shielded conductor pairs (31, 32, 33, 34). A collector device (4), in an explosion-proof jacket (5) at an end of the multiple line (3), has uncoupling devices (45) for the galvanically isolated conductor pairs and a combiner circuit (47, 49) that combines the transmitted electric power from each line into a global power. The global power is outputted at an output (48) of the collector device to the electrical device. The conductor pairs allow for an increased global power, which is scalable, safely transmittable, with standard, conductor pairs. The electrical device is intrinsically safely supplied with high power with minimal effort.

Abstract: A mobile measuring device (100) includes a power supply module (110) that includes a rechargeable battery (120), a primary battery (130) and an electronic control unit (140). The rechargeable battery is permanently installed in the mobile measuring device and can be charged via a charging device (122) of the mobile measuring device. The primary battery is also permanently installed in the mobile measuring device. The electronic control unit is configured to guarantee a power supply of the mobile measuring device via the rechargeable battery as long as an electrical minimum power supply is provided by the rechargeable battery and to change to a temporary power supply by the primary battery if the minimum supply power is undershot.

Abstract: A gas mask, for use with a gas filter or with a demand oxygen system, includes an elastic mask body, a connector and a counter-support. The elastic mask body is configured to be placed over the mouth and the nose of a user of the gas mask. The connector is attached to the elastic mask body and is configured to fix a gas filter or an end piece of a tube in a mount of the connector. The counter-support is attached to the elastic mask body and has a contact area for a support projection of the connector. The connector and the counter-support are arranged such that a force exerted on the connector in a direction of the user acts on the contact area of the counter-support at least partially via the support projection. The support projection is integrated at the connector by manufacturing in one piece.

Abstract: A method for manufacturing a filter (1) for gas masks includes providing a flat paper and folding the paper into a pleated preform. The filter element (2) is separated from the pleated preform (6) and is inserted into a housing (3). The inserted filter element (2) is connected to the housing (3) at least at some points. This filter elements (2) may have a polygonal outer contour, upon separating the element from the pleated filter preform (6). A foam and/or an adhesive is applied to an outer edge of the filter element (2), arranged on the circumference of the filter element, for an at least partial sealing of an edge (5). This establishes a connection to the housing (3) in at least some sections.

Abstract: A method is provided for operating a gas concentration monitoring system as well as a gas-measuring device, a central unit, a gas concentration monitoring system as well as computer program product. The safety of persons or the safety of a situation is determined with respect to at least one hazardous gas. The concentration of the gas is provided to a memory and analysis device. A measured value rating number is determined for a preset period of use. A number of instances, of the measured concentration values exceeding of a preset gas concentration limit value is input. A safety code is determined from at least one of: the measured concentration values, the measured value rating numbers and from the a total number of instances in which a gas concentration limit value was exceeded.

Abstract: A padding device (10a; 10b; 10c; 10d; 10e), for a carrying belt system (100) for a respirator (1000), has a closed pad core shell (20) and a pad core (30) configured in the pad core shell. The padding device is formed by injection molding a hollow profiled section, inserting of a pad core material into the hollow profiled section for forming the pad core in the hollow profiled section, and closing the hollow profiled section (21) for creating the closed pad core shell (20). The padding device (10a; 10b; 10c; 10d; 10e) has a closed pad core shell (20) and a pad core (30) arranged in the pad core shell. The pad core shell is seamless as an injection-molded component in at least some sections. A carrying belt system and a respirator with the carrying belt system are provided with the belt system having the padding device.

Abstract: A fixed bed (10) is provided for a fixed-bed reactor (100). The fixed bed (10) contains a particulate carrier and at least one reactive substance. The carrier is a silicate compound and the reactive substance is an organometallic pyridine compound. A method for preparing such a fixed bed is provided. The method includes the steps of preparing the carrier, preparing an impregnation and treating the carrier with the impregnation. In addition, a gas-measuring tube is provided with a correspondingly prepared fixed bed as well. A method uses organometallic pyridinium compounds, especially pyridinium dichromate, in a fixed-bed reactor for detecting alcohol compounds and for preparing formaldehyde and/or acetaldehyde.

Abstract: A breath alcohol measurement device has a sample collector (1) with a sample inlet (2) configured for a contactless introduction of a breath sample. A measurement unit (9) has a sensor (16) that generates a measurement signal based on an alcohol content in the breath sample. A control and evaluation unit (4) determines the alcohol content based on the measurement signal and transmits a result-specific signal to an output unit (5). Some of the breath sample provided into the sample inlet (2) is applied, at least intermittently via a main flow duct (10), to the sensor (16) via a measurement gas duct (21) that is connected via an outlet to the environment (7). Between the sample inlet (2) and the outlet of the main flow duct there is a further outflow opening (6) through which some of the breath sample introduced into the sample inlet exits into the environment.

Abstract: A measuring device is provided for measuring the absorption of gases. The measuring device (1) includes a radiation source (2), a first detector element (3), a second detector element (9) and a reflector array (4). The reflector array (4) defines a first optical path (5) between the radiation source (2) and the first detector element (3) and defines a second optical path (10) between the radiation source (2) and the second detector element (9). The first optical path (5) has at least two points of intersection with itself and the second detector element (9) is arranged outside of a first plane which is defined by the radiation source (2) and two points of intersection (6) of the first optical path (5).

Abstract: A high-pressure connector (10), for a fluid-communicating connection of a breathing gas source (200) of a respirator to a pressure reducer (110), includes a connector upper part (20) with a connector upper part duct (22) with an inlet opening (24) for the inflow of breathing gas from the breathing gas source (200). A connector lower part (30) has a connector lower part duct (32) with an outlet opening (34) for the outflow of breathing gas into the pressure reducer (110). The connector upper part (20) is fastened reversibly with a fastening interface (26) to a counter-fastening interface (36) of the connector lower part (30). The connector upper part duct (22) is in fluid-communicating connection with the connector lower part duct (32). A filter device (40) is arranged in the connector upper part duct (22) in at least some sections for filtering solid particles out of the breathing gas.

Abstract: A breathing bag (1) for a closed-circuit respirator (100) has a bag component (2), which encloses an inner volume (3). The bag component (2) can reversibly assume at least one unfolded state (4) and a folded-in state (5). The bag component (2) encloses a larger inner volume (3) in the unfolded state (4) than in the folded-in state (5). Moreover, a closed-circuit respirator (100) is provided, having at least one counter-lung, a filter device, an oxygen source as well as a housing. The counter-lung, the filter device and the oxygen source are arranged in the housing.

Abstract: A system, for the transcutaneous measurement of a substance concentration, preferably alcohol, in blood, includes a light source (1); a detector device (15); an optical device (7, 7?), with an inlet (5), an outlet (49) and an exit opening (35); and a contact surface element (37) with a contact surface (41). Measuring radiation emitted by the light source (1) reaches the inlet (5) and exits the exit opening (35), to the contact surface (41). The optical device (7, 7?) focuses measuring radiation at a measuring point (39) at a predefined distance from the contact surface (41). The optical device (7, 7?) is configured such that scattered radiation generated in the measuring point (39) and entering into the exit opening (35) is focused at an outlet point (19) at the outlet (49). The detector device (15) is arranged to detect the scattered radiation focused at the outlet point (19).

Abstract: A breathing tube (1), for a respirator (2), includes a flexible tube body (3) with a tube axis (4), with a first tube end (5) and with a second tube end (6). A molding (7) is formed at the first tube end (5). The molding (7) extends at least partially along the tube axis (4) away from the first tube end (5) of the tube body (3). A respirator (2) may be provided, including the breathing tube (1), a breathing unit (14) and a breathing air supply device (15). A breathing tube port (16) is formed at each of the breathing unit (14) and at the breathing air supply device (15) for connecting the breathing tube (1). A mounting device (17) is formed at at least one breathing tube port (16) for mounting the molding (7) of the breathing tube (1).

Abstract: A method for testing a gas sensor and a gas-measuring device with a testing device for testing the gas sensor provides an improved analysis and evaluation of states of gas sensors. Due to a testing of a gas admission element, by monitoring measuring signals (35, (38) in a time course (400) in conjunction with dispensing (91, 91?, 91?) a quantity of test substance, it is made possible to check whether a gas supply to the gas sensor is possible (to check if the gas diffusion path is open) and given.