Abstract: Apparatuses, methods, and computer-readable media for operating a scanning smoke detector are described herein. One apparatus a laser emitter configured to emit a beam of light, a rotational component configured to rotate the emitter such that the beam periodically scans across an area, and a light receiver configured to receive a reflected portion of the beam of light and determine a presence of smoke particles in the area based on the reflected portion. The smoke detection apparatus can be configured to operate at a first power level, decrease the beam to a second power level responsive to a determination that an object in the area is in a path of the beam, and increase the beam to the first power level responsive to a determination that the object is no longer in the path of the beam.

Abstract: Systems, methods, and non-transitory computer-readable media for continuously monitoring residential air quality and providing a trend based analysis regarding various air pollutants are presented herein. The system comprises an air quality monitor located in a residential house, wherein the air quality monitor is configured to measure the level of an air pollutant. The system also includes a server that is communicatively coupled to the air quality monitor, wherein the server is configured to generate a unique environmental fingerprint associated with the residential house.

Abstract: Apparatuses, methods, and computer-readable media for operating a scanning smoke detector are described herein. One apparatus a laser emitter configured to emit a beam of light, a rotational component configured to rotate the emitter such that the beam periodically scans across an area, and a light receiver configured to receive a reflected portion of the beam of light and determine a presence of smoke particles in the area based on the reflected portion. The smoke detection apparatus can be configured to operate at a first power level, decrease the beam to a second power level responsive to a determination that an object in the area is in a path of the beam, and increase the beam to the first power level responsive to a determination that the object is no longer in the path of the beam.

Abstract: Apparatuses, systems and methods of providing a personal air quality monitor. The personal air quality monitor may include a housing suitable for physical association with a person; an air inlet capable of providing air flow from an environment outside the housing to a chamber within the housing; a plurality of sensor resident within the chamber, suitable for receiving the airflow and measuring air quality factors associated with the airflow; and a communication system suitable for processing the air quality factor measurements and communicating the processed air quality factor measurements to a user interface cognizable to the person.

Abstract: Apparatus and associated methods relate to the determination of local environmental air quality by processing data from a local device sensing a user's respiration-vocalization. In an illustrative example, respiration-vocalization for a CPAP user may be sensed by an airflow and/or air pressure sensor. Respiratory disturbance events, such as coughing, for example, may be detected. The sensed events, converted to respiration-vocalization data, may be collected to estimate the environmental air quality and/or particle density around the user. Some examples may estimate specific allergen concentrations by correlating user respiration-vocalization data with the respiration-vocalization data from users/patients with known airborne particle sensitivities. In some embodiments, regional environmental air quality data may be compared with respiration-vocalization data to produce local environmental air quality results.

Abstract: An application server predicts respiratory disease risk, rescue medication usage, exacerbation, and healthcare utilization using trained predictive models. The application server includes model modules and submodel modules, which communicate with a database server, data sources, and client devices. The submodel modules train submodels by determining submodel coefficients based on training data from the database server. The submodel modules further determine statistical analysis data and estimates for medication usage events, healthcare utilization, and other related events. The model modules combine submodels to predict respiratory disease risk, exacerbation, rescue medication usage, healthcare utilization, and other related information. Model outputs are provided to users, including patients, providers, healthcare companies, electronic health record systems, real estate companies and other interested parties.

Abstract: An analyzing device is provided, which can accurately analyze information related to generation sources. A generation source analyzing device is provided, which includes a measurement value acquiring unit to acquire time-series measurement values of a concentration of each of a plurality of measured object components at a measurement point, a correlation calculating unit to calculate a correlation value between the time-series measurement values of at least one set of the measured object components, and a generation source analyzing unit to analyze information related to generation sources of at least one measured object component based on the correlation value calculated by the correlation calculating unit.

Abstract: Disclosed is a smoke detector having a controller configured for executing an operational test, the operational test including: activating an electronic vaporizer to produce vaporized particulate within the smoke detector; rendering a first determination of whether a particulate sensor disposed in the detector senses the vaporized particulate; and rendering a second determination based on the first determination, the second determination identifying an operational state of the smoke detector.

Abstract: Presented is a device for detecting particles, comprising: a first light source positioned for illuminating particles passing through a detection region of the particle detector; a first detector positioned and adapted for detecting light signals from particles illuminated by the first light source in the detection region; a processor configured for determining a type of the particles passing through the detection region from light signals detected by the first detector; characterized in that: the particle detector further comprises: a means for detecting when particles pass through the detection region; and a controller coupled to the means and configured to operate the first light source with a first pulsed current when particles pass through the detection region thereby preserving or extending lifetime of the first light source, and wherein the first pulsed current is selected beyond a continuous current damage threshold of the first light source thereby increasing light output of the first light source.

Abstract: An application server predicts respiratory disease risk, rescue medication usage, exacerbation, and healthcare utilization using trained predictive models. The application server includes model modules and submodel modules, which communicate with a database server, data sources, and client devices. The submodel modules train submodels by determining submodel coefficients based on training data from the database server. The submodel modules further determine statistical analysis data and estimates for medication usage events, healthcare utilization, and other related events. The model modules combine submodels to predict respiratory disease risk, exacerbation, rescue medication usage, healthcare utilization, and other related information. Model outputs are provided to users, including patients, providers, healthcare companies, electronic health record systems, real estate companies and other interested parties.

Abstract: An entry on an allergen map may be generated by a computer system where a deep learning model is trained using online content data. Allergen content data which contains geographic data may be detected from the online content data. The allergen content data may be analyzed by the computer system and tagged with a quality and intensity indicator. Based on the tagging and the geographic location, an allergen map may be generated.

Abstract: The present teachings relate a method 10 performed in an arrangement (100) comprising a first device (2) configured to handle data obtained by one or more sensor modules (S1, S2, . . . , Sn) and a second device (3) configured to provide information. The method 10 comprises: receiving (11), in the first device (2), one or 5 more variable values relating to one or more contexts (91, 92, . . . , 9n) of a system (1), the variable values being obtained by the one or more sensor modules (S1, S2, . . . , Sn); determining (12), in the first device (2), an activity index for one or more of the contexts (91, 92, . . . , 9n) based on the variable values; retrieving (13), in the second device (3), the activity index for a context (91, 92, . . . , 9n; and providing (14), by the 10 second device (3), information based on the retrieved activity index.

Abstract: An allergy warning and protection system and method to proactively warn a user and protect a dependent individual, such as a child, suffering from allergies. The system comprises a beacon housed within a wearable, such as a bracelet, that is worn by the dependent. The beacon has an associated identifier that is linked to data stored on a server that corresponds to the allergy and sensitivity levels of the dependent individual with an allergy, indicating that the child is allergic to peanuts, eggs, gluten and/or other allergens. When in use, the beacon transmits identification data to a handheld device operated by a user which is utilized to retrieve the allergy and other confidential information, such as emergency contact information, from the server and to issue an alert notification to the user. In a preferred embodiment, a layer of privacy is provided so that a user must first be “trusted” before receiving confidential information about a person with allergies.

Abstract: An aircraft including a jet engine including a core having a compressor and combustion chamber, and a particulate sensor located within the core and a particulate detection method for an aircraft having a jet engine where the method includes sensing particulates within the core and providing a corresponding value for the sensed particulates and providing an indication related thereto.

Abstract: There is disclosed a field calibratable particle sensor solution in a low-cost, very compact form factor. This makes a low-cost sensor more accurate for low-concentration pollution measurements and decreases the cost of pollution measurement systems having a wide geographic coverage. In a related embodiment, the invention illustrates a method and system to remotely and automatically calibrate one or more of the low cost sensors disclosed herein as well as other commercially available sensors (such as optical particle counters, photometers etc.) against a reference instrument (such as a beta attenuation monitor) which may or may not be physically located in the same place as the individual sensors. The method may require minimum (or no) user interaction and the calibration period is adjustable periodically.

Abstract: A heat alarm apparatus includes a housing defining a body, a sensor mounting panel located on the body and a heat sensor extending from the sensor mounting panel. A control circuit is configured to detect a temperature rise at the heat sensor and output an alarm signal in response thereto. At least the surface of the sensor mounting panel from which the heat sensor extends is a dark color.

Abstract: A particle monitoring method of monitoring particles included in an exhaust gas from a depressurized processing vessel 12 includes counting the particles included in the exhaust gas from the depressurized processing vessel 12 while cleaning an inside of the depressurized processing vessel 12 by a particle monitor 18; creating a histogram showing a time and the number of particles from a result of the counting of the particles; extracting, from the histogram, a first feature amount indicating a correlation between a mode of the number of the particles and a particle counting period; and extracting, from the histogram, a second feature amount indicating a correlation between the particle counting period and a distribution tendency of the particles during the particle counting period.

Abstract: A light-emitting device to detect passage or smoke in the emitted beam. The device includes a source of invisible radiation, a source of visible laser radiation, an alignment component to align the central axis of the visible radiation with an axis parallel to the central axis of the invisible radiation, and a switch to turn off the visible laser source. The device can further include a housing containing both sources of radiation. The switch is configured to be controlled by the closing of the housing and the source of visible laser radiation is turned off in response to the closure of the housing.

Abstract: Apparatus for detecting powder flow along a powder flow path includes a light source and a light detector for detecting light from the light source directed across the powder flow path as powder flows through said powder flow path. A circuit receives the output from the light detector and determines an average or RMS of the signal received by the light detector. The circuit may determine whether there is flow or no flow of powder or whether there is a change in flow rate of powder. Preferably, the apparatus is used in combination with a dense phase powder pump, which causes the powder to flow in pulses from the pump outlet into the powder flow path. More preferably, the light source and detector are enclosed in a housing that is connected between the pump outlet and a powder feed hose which supplies powder to a spray gun or hopper.

Abstract: A sensor controller for a particulate matter detection sensor includes a heater configured to heat an attachment portion so as to burn and remove particulate matter attached to the attachment portion, a learning portion for obtaining a sensor detection value immediately after burning and removing the particulate matter due to heating of the heater. The leaning portion calculates a sensor standard value based on the obtained sensor detection value in a state where the particulate matter is removed, and stores the sensor standard value as a learning value. Furthermore, a correcting portion corrects the sensor detection value based on the sensor standard value stored by the learning portion.

Abstract: Computerized systems and methods may be used to enable users to report crimes, safety hazards or other perceived problems to the appropriate authorities via an alert. Such alerts may be communicated to the authorities through any suitable communication method such as, for example, phone calls, email and/or SMS text messages. In some example embodiments, the reporting system includes a computing device including, but not limited to, a mobile smartphone, tablet device, laptop computer, or desktop computer programmed with a software application.

Abstract: A motion guide device includes a movable member attached onto an elongated member for forming a ball guiding passage and for receiving ball bearing members between the elongated member and the movable member, a detecting device includes a magnetic member and an insulated tube engaged into a hole of the movable member, and a warning device is coupled between the movable member and the magnetic member for generating a warning signal when the movable member and the magnetic member are electrically connected together with worn particles and for allowing the user to examine and to repair the motion guide device or the ball screw device when required.

Abstract: The pipeline inspection gauge (PIG) alert system provides a method and apparatus for effectively locating a pipeline inspection gauge (PIG) as it traverses a pipeline. The method and apparatus incorporates hollow, empty tubes spaced along the length of the pipeline. The tubes are provided with lower ends that extend into the pipeline. The tubes are closed at their lower ends and connectable to respective pressure detection devices or the like at their upper ends. When a PIG passes through the pipeline, it contacts the lower end of the tube that extends into the pipeline, causing the tube to break, and thus opening the interior of the tube to the pressurized flow of the product flowing in the pipeline. The change in pressure is registered by the pressure detection device to indicate the passage of the PIG.

Abstract: An integrated circuit, in particular a microcontroller, for operation in an area with ionizing radiation, has at least one part of a temperature control circuit. The temperature control circuit performs a regulated increase in the circuit temperature to a predefined, essentially constant operating temperature, by increasing the electrical power consumption of the circuit by an adjustable additional electrical power. The circuit has an output facility for information about damage to the integrated circuit caused by the ionizing radiation impacting thereon, it being possible to determine the information about damage from a radiation-dose-dependent decrease in the adjustable additional electrical power.

Abstract: A sensor unit that includes at least one sensor configured to measure an ambient condition is described. The controller can be configured to receive instructions, to report a notice level when the controller determines that data measured by the at least one sensor fails a report threshold test corresponding to a report threshold value. The controller can also be configured to obtain a plurality of calibration measurements from the at least one sensor during a calibration period and to adjust the threshold based on the calibration measurements. The controller can be configured to compute a first threshold level corresponding to background noise and a second threshold level corresponding to sensor noise, and to compute the report threshold value from the second threshold. In one embodiment, the sensor unit adjusts one or more of the thresholds based on ambient temperature.

Abstract: Various devices, systems, and methods may be presented. A wireless device may include a smoke sensor configured to obtain measurement data regarding a level of smoke. The wireless device may operate in a sleep mode while the smoke sensor obtains the measurement data. The wireless device may determine, from the measurement data, whether the level of smoke has exceeded a warning threshold. In response to determining that the level of smoke has exceeded the warning threshold, the wireless device may communicate a warning indication. The wireless device may determine, from the measurement data, whether the level of smoke has exceeded an alarm threshold. In response to determining that the level of smoke has exceeded the alarm threshold, the wireless device may communicate an alarm indication, the alarm indication indicating that the alarm threshold has been exceeded.

Abstract: Devices, systems, and methods are disclosed which relate to utilizing a wireless communication device which receives allergy information from network nodes. The wireless communication device contains an allergy profile for the user. When the wireless communication device receives allergy information this allergy profile is referenced to determine if any allergens near the user may cause a problem for the user. If allergens exist to which the user is allergic, a visual, aural, and/or tactile alert is output on the wireless communication device.

Abstract: Various devices, systems, and methods may be presented. A sensor unit may be presented that includes a housing and a chamber arranged within the housing. The sensor unit may include a controller arranged within the housing. The controller may receive information from an HVAC (heating ventilation and air conditioning) system, wherein the information is indicative of operation of the HVAC system. The controller may determine an effect of the HVAC system on measurements made by the sensor using the information from the HVAC system.

Abstract: There is provided a water quality monitoring apparatus including: an air quality analyzing unit detecting, using an ion mobility sensor, air quality in a space that is at least partially enclosed by a partition wall and a boundary surface with water whose water quality is to be monitored; and an alarm unit that outputs a signal indicating an abnormality if an air quality pattern obtained by the air quality analyzing unit is outside a tolerated range for air quality patterns of air that contacts the water to be monitored. Such water quality monitoring apparatus is capable of monitoring the water quality of drinking water inside a water tank or the like indirectly but precisely by detecting the quality of the air contacting the water using an ion mobility sensor.

Abstract: A sensor unit that includes at least one sensor configured to measure an ambient condition is described. The controller can be configured to receive instructions, to report a notice level when the controller determines that data measured by the at least one sensor fails a report threshold test corresponding to a report threshold value. The controller can also be configured to obtain a plurality of calibration measurements from the at least one sensor during a calibration period and to adjust the threshold based on the calibration measurements. The controller can be configured to compute a first threshold level corresponding to background noise and a second threshold level corresponding to sensor noise, and to compute the report threshold value from the second threshold. In one embodiment, the sensor unit adjusts one or more of the thresholds based on ambient temperature.

Abstract: A sensor unit that includes at least one sensor configured to measure an ambient condition is described. The controller can be configured to receive instructions, to report a notice level when the controller determines that data measured by the at least one sensor fails a report threshold test corresponding to a report threshold value. The controller can also be configured to obtain a plurality of calibration measurements from the at least one sensor during a calibration period and to adjust the threshold based on the calibration measurements. The controller can be configured to compute a first threshold level corresponding to background noise and a second threshold level corresponding to sensor noise, and to compute the report threshold value from the second threshold. In one embodiment, the sensor unit adjusts one or more of the thresholds based on ambient temperature.

Abstract: A sensor unit that includes at least one sensor configured to measure an ambient condition is described. The controller can be configured to receive instructions, to report a notice level when the controller determines that data measured by the at least one sensor fails a report threshold test corresponding to a report threshold value. The controller can also be configured to obtain a plurality of calibration measurements from the at least one sensor during a calibration period and to adjust the threshold based on the calibration measurements. The controller can be configured to compute a first threshold level corresponding to background noise and a second threshold level corresponding to sensor noise, and to compute the report threshold value from the second threshold. In one embodiment, the sensor unit adjusts one or more of the thresholds based on ambient temperature.

Abstract: Particles to be detected are irradiated by first wavelength light and second wavelength light. The light that is scattered by the particles is converted into a first and second scattered-light signals. The two scattered-light signals are normalized with respect to one another such that the amplitude profile thereof approximately corresponds to larger particles such as dust and steam. Furthermore, an amplitude ratio is formed between the two scattered-light signals and an amplitude comparison value (90%) is set, which corresponds to a predeterminable particle dimension in the cross-over region between smoke and dust/steam. Mainly the first scattered-light signal is evaluated if the amplitude ratio exceeds the amplitude comparison value (90%) and a dust/steam-density signal is emitted. In the other case, mainly the second scattered-light signal that is evaluated and a smoke-density signal is emitted.

Abstract: The invention relates to novel methods and to devices for a measuring and analysis apparatus that measures impurities and/or particles in a gas or air. In a particle separation step, target particles having predetermined particle properties are separated from remaining particles from a gas or gas mixture such as air or a liquid, in short a fluid, that contains a particle mixture, and the occurrence and/or frequency of said target particles is determined in a measuring chamber. The likewise novel cooling of the radiation sources required for measurement permits the use of such having high power, as is required for measuring few particles or the smallest impurities. A further novel expansion of the electrical measurement range allows small but also abundant particles and impurities to be measured. In addition, a novel interface simplifies the start-up of the apparatus.

Abstract: An electronic communication unit such as a mobile phone comprises a processor for operating said unit; and an ambient air quality monitoring sensor; characterized in that said processor is configured to operate said unit in a first mode of operation during which a) monitoring of said air quality occurs and a level of air quality is assessed against pre-determined levels; and b) ordinary communication routines are activated provided an acceptable category of pre-determined levels is identified; and in a second mode of operation during which a) monitoring of said air quality occurs and a level of air quality is assessed against pre-determined levels; and b) an alarm routine is launched interrupting the ordinary communication routines once a level of ambient air quality is assessed to warrant the user's attention.

Abstract: An extended smoke alarm system and related methods are disclosed. In particular, embodiments of an extended smoke alarm system having wireless-signal-send-and-receive functionalities wherein the system includes one or more flashlights having at least wireless-signal-receiving functionality are detailed. Related methods for system use are also disclosed.

Abstract: A sensor having a detecting part for detecting an environmental value representing change in physical amount of circumference environment by a fluid flowing into externally and a controlling part for discriminating abnormality in circumference environment based on the environmental value detected by the detecting part. A separating plate is provided inside a housing so as to separate two spaces in the height direction. A detection unit is provided in one space and a sounding body is provided in the other space. Apertures are provided in a side wall, thereby opening one space to the outside environment and letting the fluid to be measured flow into the space. Then, a flow path is formed inside the space in the housing, from the side wall forming the housing toward the detection unit, thereby proactively channeling the fluid to the detection unit.

Abstract: The solution provides a frequency distribution of a dimension of objects projected onto an image, the distribution being generated by measuring the dimension of the objects in a space in which the position of each object is at least partly free, the dimension of each object in the image depending on the position of the object. The frequency distribution of the projected objects is weighted by a weighting operation compensating for the impact of the projection in order to generate a real frequency distribution of the objects.

Abstract: A modular device for determining attributes of a substance stored in a container having a sensing module, a transmitter module and a power source module. The sensing module is capable of sensing attributes of a substance and providing an output. The transmitter module is configured to transmit an output of the at least one sensing module when operably coupled to the sensing module. The power source module is capable of being operably connected to the sensor module and the transmitter module to power the sensor module and the transmitter module.

Abstract: A fire distinguishing device includes: a detection device which detects an outbreak of a fire; a fire presence/absence distinguishing device which distinguishes the presence or absence of the fire; and a cumulative time determining device which determines the cumulative time required for distinguishing the presence or absence of the fire, in the fire presence/absence distinguishing device. The cumulative time determining device distinguishes an environment type of an environment where the detection device is installed, or a phenomenon type of a phenomenon being detected by the detection device, and further determines the cumulative time according to the distinguished environment type or phenomenon type.

Abstract: A wastewater holding tank sensor probe for use in determining the presence of a conductive liquid held within a wastewater holding tank in a recreational vehicle is disclosed. The probe is less sensitive to the presence of conductive residue as a result of an improved geometry and/or choice of materials that reduce the leakage currents between the probe tip and the sensor probe attachment surface, typically the wall of the tank. This reduction in sensitivity to conductive residue buildup can be measured by a geometrically determined resistivity factor between the probe tip and the mounting surface of the probe. The reduction in sensitivity can also be measured by the length of the path through the conductive residue between the probe tip and the mounting surface of the probe. A variety of geometries and material choices to reduce the sensitivity of electrical conductance based sensor probes to conductive residue are disclosed.

Abstract: Disclosed is a handheld salinity analyzer including a body, in which a circuit board and a battery are installed, a cell block provided with one end inserted into one end of the body and the other end on which a projecting part provided with a salinity sensor hole and a depressed part provided with a temperature sensor hole are formed, a salinity sensor inserted into the salinity sensor hole and provided with one end connected to the circuit board, a temperature sensor inserted into the temperature sensor hole and provided with one end connected to the circuit board, an ON/OFF switch installed on the end of the body, a light emitting lamp connected to the circuit board, and a body cover connected to the end of the body provided with the ON/OFF switch or to the cell block, and provided with an operating piece to operate the ON/OFF switch.

Abstract: Devices, systems, and methods are disclosed which relate to utilizing a wireless communication device which receives allergy information from network nodes. The wireless communication device contains an allergy profile for the user. When the wireless communication device receives allergy information this allergy profile is referenced to determine if any allergens near the user may cause a problem for the user. If allergens exist to which the user is allergic, a visual, aural, and/or tactile alert is output on the wireless communication device.

Abstract: A display assembly for use with a monitoring system is provided. The display assembly includes a communication interface that is configured to receive hazardous gas data indicative of a concentration level for at least one gaseous component. Moreover, the display assembly also includes a processor that is coupled to the communication interface, wherein the processor is configured to generate at least one image based on the hazardous gas data. The display assembly also includes a display media coupled to the processor, wherein the display media is configured to present the image to a user in real-time. The display assembly is positioned against the user such that the display assembly is movable with the user and the user is enabled to monitor hazardous gases within a location while the user moves about the location.

Abstract: One embodiment of the present invention discloses an odor-generating alarm apparatus that can ensure the reliability of a releasing operation and the odor dispersibility. In an odor-generating alarm apparatus, when abnormality information indicating occurrence of an abnormal state is supplied from a sensor for occurrence of an abnormal state, an initiator is operated by a circuit portion, and the initiator displaces a piston of a driving portion and displaces a spray can with respect to a casing and switches the spray can to a releasing state, thus releasing an odorous liquid filling the spray can in the form of fine particles.

Abstract: The present invention relates to the field of the detection, analysis and/or determination of matter or particles suspended in fluid. In one particular form, the present invention relates to smoke detectors, which detect unwanted pyrolysis or combustion of material. In another form, the present invention relates to smoke detectors of the early detection type, and which may be applied to ventilation, air-conditioning or duct monitoring of a particular area. In yet another form, the present invention relates to adjusting the sensitivity of particle detectors.

Abstract: An extended smoke alarm system and related methods are disclosed. In particular, embodiments of an extended smoke alarm system having wireless-signal-send-and-receive functionalities wherein the system includes one or more flashlights having at least wireless-signal-receiving functionality are detailed. Related methods for system use are also disclosed.

Abstract: A portable electronic device includes an image capturing unit, a processor unit connected to the image capturing unit, and an alarm unit connected to the processor unit. The image capturing unit captures outside images, the processor unit detects if there is any smoke near the portable electronic device according to the images and measuring relative parameters of detected smoke, and the alarm unit alarms when at least one parameter of detected smoke is out of predetermined acceptable ranges.

Abstract: A pre-smoke detector and system for use in the early detection of developing fires whereby vapors of marker chemicals generated during the melting and/or smoldering of common household materials are detected before detection by conventional smoke detectors. Vapors resulting from the heating and resultant vaporization of substances are detected as well as vapors resulting from their breakdown, decomposition, or pyrolysis during the pre-combustion stage. Conventional smoke detectors focus on particle detection and are most effective after a developing fire has produced smoke. To minimize false alarms caused by common household odors, the pre-smoke detectors focus on detecting medium temperature pyrolysis products using sensor coatings that can be consistent with a 10 year operational lifetime and multiple orthogonal detection processes.

Abstract: A test device, for checking the functioning capability of a gas-alarm annunciator, has a reservoir in which are located a target fluid and a carrier fluid. At least a part of the carrier fluid is present in a liquid aggregate state and the target fluid is at least partially dissolved in the liquid carrier fluid. An extraction device engages into the reservoir such that the target fluid can be extracted along with the liquid carrier fluid. The target fluid is constituted such that on reaching a coverage area of a properly functioning gas-alarm annunciator it will cause the gas-alarm annunciator to annunciate an alarm. A test system and a test method for checking a gas-alarm annunciator's functioning capability use such a test device.