Embodiments relate to systems and methods for dissipating heat within a gas detector. A gas detector may comprise an airflow generator configured to generate a sample gas flow through the gas detector; a sample gas flow line configured to direct the sample gas flow within a housing of the gas detector from an inlet of the gas detector toward an outlet of the gas detector; a sensor, in fluid communication with the airflow generator via the sample gas flow line, configured to detect one or more potentially hazardous gases within the sample gas flow; and a heat sink, in fluid communication with the airflow generator and positioned after the sensor along the sample gas flow line, configured to transfer heat from an interior of the housing to the sample gas flow, wherein the sample gas flow is directed out of the housing via the outlet of the gas detector.

An airborne particle collection system includes a monitoring device and a collection media. The monitoring device includes a housing having an air-intake slot, and a motor. The collection media includes an adhesive-coated tape contained within a removable cartridge inserted into the housing. The removable cartridge includes a particle intake zone, proximate to the air-intake slot, and through which the adhesive-coated tape is exposed to capture airborne particles passing through the air-intake slot, and an inspection zone at which the airborne particles captured at the intake zone are transported for optical imaging. The motor moves the airborne particles captured by the adhesive-coated tape from the particle intake zone to the inspection zone.

A gas sampler device has a top plate with a concaved outer wall. The concaved outer wall allows users easily to lift the top plate off of the bottom plate without disturbing the bottom plate because the curved surface permits more positive contact between the outer wall and users' fingers. Moreover, the weight of the top plate is reduced by approximately twenty percent compared to conventional top plates, a feature that also makes it easier for users to lift the top plate off of the bottom plate.

An apparatus for sensing particulate matter in a fluid includes a substrate; and an integrated circuit electrically connected to the substrate, the integrated circuit including a photodetector. The apparatus includes a filter assembly including a particle filter aligned with the photodetector, and a filter housing for the particle filter, the filter housing defining a flow path for fluid through the particle filter. The apparatus includes a light source electrically connected to the substrate and positioned to illuminate the particle filter.

The invention generally relates to sensing garments.

A sample extraction device and a desorption device for use in gas chromatography (GC), gas chromatography-mass spectrometry (GCMS), liquid chromatography (LC), and/or liquid chromatography-mass spectrometry (LCMS) are disclosed. In some examples, the sample extraction device includes a lower chamber holding a sorbent. The sample extraction device can extract sample headspace gas from a sample vial by placing the sorbent inside the vial and creating a vacuum to increase recovery of low volatility compounds, for example. Once the sample has been collected, the sample extraction device can be inserted into a desorption device. The desorption device can control the flow of a carrier fluid (e.g., a liquid or a gas) through the sorbent containing the sample and into a pre-column and/or a primary column of a chemical analysis device for performing GC, GCMS, LC, LCMS, and/or some other chemical analysis process.

A pathogen detection apparatus includes an obtainer that obtains a body temperature of a subject; a collector that collects a pathogen carried by the subject or a pathogen in air around the subject; a detector that performs detection of the pathogen collected by the collector; a reporter that reports a detection result obtained by the detector; and a controller. In a case where the body temperature of the subject obtained by the obtainer is higher than a predetermined threshold value, the controller controls at least one of the collector or the detector to shorten a time period from start of collection by the collector to report of the detection result by the reporter.

There is provided a leak detection device configured to check tightness of an object to be tested by a tracer gas, the device including a sniffing probe configured to be connected to a leak detector and/or a spray blower configured to be connected to a source of the tracer gas; and a glove to which the sniffing probe and/or the spray blower is attached. There is also provided a module for detection of leaks, including the device configured to check the checking the tightness of the object to be tested by the tracer gas.

An apparatus for passive sampling of airborne particles such as those found in an aerosol is disclosed. The passive sampler is designed to take advantage of natural air flow to collect airborne particles, such as those contained in an aerosol, for subsequent analysis. The passive sampler increases the sampling efficiency for diffusion and electrostatic collection of particles by using natural airflow or movement to bring particles closer to the deposition surface. Alternately charged electret filters further increase the sampling efficiency.

The present invention relates to a fluid sensing device for a portable electronic device, comprising a fluid sensing means configured to analyze a sampling volume; and a fluid moving means comprising a motionless fluid pumping means using thermal transpiration for moving the sampling volume. It also relates to a portable electronic device comprising such fluid sensing device. Using a motionless fluid pumping means, a sampling volume can be moved at low energy consumption and low noise.