Abstract: A pressure sensor (100) for a measuring system (10) measuring concentrations of gaseous and/or aerosol components of a gas mixture with a reaction carrier (14), with a flow channel (42). The flow channel (42) forms a reaction chamber (46) with a reactant (48), that enters into an optically detectable reaction, and with a measuring device (12) with a gas port unit (5) connecting an inlet channel (16) and an outlet channel (18) to the flow channel (42) and a gas delivery unit (28). The pressure sensor (100) measures a pressure difference of a gas mixture flowing through the gas delivery assembly unit (2) and/or the flow channel (42) of the reaction carrier (14) and has an elastic element (102), which is configured to undergo deformation as a function of the pressure difference. A measuring method, a measuring device and a reaction carrier for such a measuring system are also provided.

Abstract: A sorbing granular material (20) is provided including a plurality of particles of granular material (5). The particles of granular material (5) are mixed at least partly with magnetizable particles (10), so that in case of magnetization of the magnetizable particles (10), the particles of granular material (5) form a compacted sorbing granular material (20) based on magnetic attracting forces between the magnetizable particles (10). The compaction is reversible. In addition, a process for producing a sorbing granular material (20) is provided.

Abstract: An alcohol-measuring device includes a mouthpiece (1), designed to enable a test subject to release breathing air into the mouthpiece, an electrochemical sensor (6), in fluidic connection with the mouthpiece (1) to measure alcohol in the breathing air of the test subject and a control unit. The sensor (6) has at least two heating elements (9, 10), one heating element arranged on the front side and one heating element arranged on the rear side of the sensor (6). The control unit (4) is electrically connected to the heating elements to supply electrical energy for the heating elements. The control unit (4) is set up to heat the heating elements each to a desired temperature. The control unit (4) is also electrically connected to the sensor (6) in order to determine the value of the alcohol concentration in the breathing air of the test subject.

Abstract: A personal safety system in the form of a refuge chamber with at least one main room and a carbon dioxide absorber (10) provided for absorbing carbon dioxide out of the ambient air of the main room. The carbon dioxide absorber (10) has a body (14) and a basket (12) that can be inserted into the body (14) for receiving loose soda lime. With this, any static charges of previously used soda lime cartridges are avoided and dangers arising therefrom, in potentially explosive areas, are ruled out.

Abstract: A personal safety system with a security entrance (4), a holding room (5) connected to security entrance (4), an air curtain device (2) at an entrance door (3) of the security entrance (4), allows a persons to reach the holding room in a short time. To accomplish the object a circulating air system (13, 15, 18, 19, 20, 22, 25, 26) is provided for the interior space enclosed by the security entrance (4) and for the holding room (5). The circulating air system (13, 15, 18, 19, 20, 22, 25, 26) includes at least one air delivery unit (18) and a toxic gas filter (19), an air flushing device (28, 30, 31) with air storage units (29) for the holding room (5) and a gas supply duct (27) in the holding room (5) for respirator products.

Abstract: A gas detector system includes a transmitter (1), which has a light source (3), which emits an analytical light beam (5). A transmitter lens assembly (7), to focus the analytical light beam (5) in an emission direction (9), includes a receiver (19, 19?) with a receiver lens assembly (21), defining a receiver focal point (27, 27?) and a receiver axis (23). A light mixing rod (29) defines a first rod axis (35) that extends from an inlet end (31), pointing toward the receiver lens assembly (21), to an outlet end (33) facing an analytical detector (39) and a reference detector (45). An analytical filter (43, 43?) is arranged in front of the analytical detector (39) as viewed from the receiver lens assembly (21). A reference filter (49, 49?) is arranged in front of the reference detector (45) as viewed from the receiver lens assembly (21).

Abstract: A device for receiving liquid samples includes at least one sample carrier (1) for receiving the liquid sample, a sample carrier ejector (3) and a sample carrier holder (2) with a first guiding area and a second guiding area (4, 5) for guiding the sample carrier ejector (3). The first guiding area (4) has a tubular design and the second guiding area (5) has a groove-shaped design. The sample carrier ejector (3) has a geometry complementary to the first and second guiding areas (4, 5) and is axially displaceable within the sample carrier holder (2) such that the sample carrier (1) can be detached by the sample carrier ejector (3) from the sample carrier holder (2).

Abstract: A gas sensor for detecting combustible gases is provided with a catalytic sensor element. The catalytic sensor element is arranged in a housing (1) surrounding the catalytic sensor element on all sides. The housing has a gas-permeable inlet opening. The gas sensor has electric lines, which are in connection with the sensor element and have terminals located outside of the housing (1). The housing has a gas-permeable inlet opening (2) and a gas-permeable outlet opening (3) and a flow channel (4) connecting the gas-permeable inlet opening (2) and the gas-permeable outlet opening (3). The sensor element is arranged in the flow channel.

Abstract: A device for optical detection of a target gas in gas mixtures includes an operation and evaluation unit, a measurement cuvette with optically reflective surfaces on its interior walls and a gas inlet to the environment, a radiation source, a measuring detector and a reference detector unit provided on the measurement cuvette. The measuring detector and the reference detector unit detect the light of the radiation source and produce electrical signals corresponding to the intensity of the detected light. An optical bandpass filter element, constructed to transmit light of a measurement wavelength, is arranged upstream of the measuring detector. An optical double-bandpass filter unit, that transmits light of a first reference wavelength and light of a second reference wavelength, is arranged upstream of the reference detector unit. The operation and evaluation unit operates the radiation source and acquires the electrical signals of the measurement detector and the reference detector unit.

Abstract: A test station for a plurality of test gases, includes a main unit (10) with a control (12) and test modules (20), each for a gas measurement device, that exchange data to register a type of gas measurement device and test gas(es) required for the device type. The control sets a schedule for a test using a test gas, or for a plurality of successive tests each with different test gases and carries out the specific test planned according to the schedule, in parallel with tests for all of the test modules for a test gas and determines, as an additional gas measurement device is inserted, based on the particular device type of the additional gas measurement device, whether the currently-running test with the current test gas is suitable for the inserted test module; and if the test gas is suitable, to start the test for this test module.

Abstract: A filling station for a breathing apparatus includes a cradle that houses a fill panel, a manifold and a cascade bank system. The fill panel has one or more sequence valves for controlling filling of one or more compressed air breathing apparatus with air stored in the cascade bank system. The manifold connects the fill panel to the cascade bank system. The cascade bank system has a cylinder store including five or more banks. Also provided is a filling station recharging device that has a cradle, a manifold, a cylinder store and a pump. The control panel has one or more valves for controlling recharging of one or more breathing apparatus filling station with air stored in the cylinder store. The manifold connects the control panel and pump to the cylinder store. The pump and cylinder store at least partially power the recharging.

Abstract: A gas measurement system for measuring the concentration of gaseous and/or vaporous components of a gas mixture by means of a color change of at least one reaction substance on a reaction support unit, which is arranged in at least two light permeable channels in such a manner that the color change on the reaction substance can be detected at low expense on a large number of separate positions. The detecting unit which detects the color change can be designed as a digital camera with an electronic image converter or image sensor, and an imaging optics system (e.g., a lens system). Related systems, methods, apparatus, and articles are also described.

Abstract: A method for recognizing sensor poisonings in portable gas-measuring devices with a test station having a main unit with a control and analysis unit and test modules connected with the main unit for data exchange with an connected device. The test station recognizes device model and/or gas sensor model of the connected device. The main unit has gas inlets for different test gases and there is a first gas feed line for sending test gas to the test modules and a second gas feed line for sending purging gas to the test modules and a gas drain line to return gas from the test modules to the main unit. The method includes detection of a first measured value and of a second measured value and determination of sensor poisoning on the basis of the two values. The test station control and analysis unit carries out the method.