In various embodiments, rapid, sensitive detection of molecular hydrogen is achieved by receiving sample gas that includes ambient water vapor and hydrogen, passing the sample gas through a gas dryer, chemically converting hydrogen in the sample gas to water vapor to produce converted sample gas, measuring water vapor in the converted sample gas to produce a water vapor signal, separating the water vapor signal in the time domain into an ambient water vapor signal and a hydrogen-derived water vapor signal, wherein the gas dryer dampens variation in the ambient water vapor signal, and outputting a hydrogen signal that describes molecular hydrogen in the sample gas that is based on the hydrogen-derived water vapor signal.

A testing system is provided that includes a plurality of valves and a plurality of pumps. At least one of the pumps is coupled to at least one of the valves. A plurality of sensor arrays are coupled to at least one of the pumps or at least one of the valves for detecting at least one element. Each of the sensor arrays includes at least one serial connected sensor or parallel connected sensor.

A gas measuring device (100) for analyzing a gas mixture (310) and monitoring an environment (300) has a housing (110) for delimiting a measurement interior volume (120) and/or for separating the measurement interior volume (120) from the environment (300) containing the gas mixture (310). The housing has a gas inlet (111) and a gas outlet (112) for respective fluid-conducting connection between the measurement interior volume (120) and the environment (300), and an electrochemical gas sensor unit, which is arranged within the measurement interior volume (120), and which serves for determining a concentration of a gas fraction, in particular an oxygen fraction, contained in the gas mixture (310).

An automated control system including an unmanned aerial vehicle (UAV) and an input device. The UAV includes: a sensor, a receiver; and memory. The memory includes a task association data including one or more tasks for execution by the UAV. The input device includes a tagging block. The tagging block allows an operator to tag an object of interest and send a tag regarding the object of interest to the UAV, via the receiver, wherein the object of interest is located within a visual field of the UAV. The sensor processes data within the visual field and the input device is configured to communicate the object of interest from the visual field tagged by the operator. The task is selected from the task association data and the UAV executes the task with respect to the object of interest from the visual field.

The functions of the odor (smell, odor, reek etc. have the same meaning) detecting process with the same raw water includes two functions, that is: a function of detecting an odor by a downward substitution method that substitutes, in a sensor portion, heavy odorous substances to a bottom portion and light normal air to an upper portion by a four-stage humidity removal process in which high humidity air which is first generated in a vaporizing portion is made into medium-humidity air with a dehumidifying portion, which is then made into low-humidity air with a constant-temperature portion, and then two or more types of sensor elements are exposed to dry air at the sensor portion; and a second function of detecting poison using fish in a monitoring water tank, which is detected with another process such as surveillance camera, image processor, periphery controller and the like. The above two functions are compactly incorporated as an integrated type into a single cabinet.

A method and an aircraft air contaminant analyzer for determining and classifying air contaminants, providing a sample flow path and bypass flow path bypassing the sample flow path, are disclosed, the analyzer comprising a contaminant collector comprising a medium desorbing captured contaminants, the collector providing a first sample flow path; a heater vaporizing captured contaminants; a bypass comprising a channel including a second sample flow path, the channel bypassing the collector; a sensor responding when air contaminant mass is added to or removed from the sensor, for classifying contaminant type; the sensor receiving contaminants desorbed from the medium; a frequency measurement device measuring the response generated by the sensor as the air contaminant is added to and removed from the sensor; a computer readable medium bearing a contaminant recognition program and calibration data; and, a processor executing the program, the program including a module classifying the contaminant by type.

An article storage apparatus includes a sensor device sensing gases included in air in a chamber where an article is stored; a concentrator concentrating the gases contained in the air; a filtering device filtering the gases contained in the air; and at least one processor. The at least one processor controls the concentrator to concentrate the gases contained in the air, and identifies a condition of the article based on a concentration level of a target gas related to the article measured by the sensor device when the target gas is extracted as gases desorbed from the concentrator pass the filtering device.

A breathing air laboratory on location gas sample test and data collecting system and method, at a remote breathing air provider's facility, that includes an air compressor, for remotely testing, collecting, and monitoring the quality and purity of the breathing air being produced at the provider's facility, that allows an accredited independent monitoring, testing, and analyzing facility to provide breathing air validation and certification to a cloud-based air quality test and analysis account belonging to the breathing air provider facility at any time. The system includes redundant gas sample air sensors for O2 and CO to ensure quality and accuracy in the breathing air test and data collection, and analysis and a “canary” gas sample test module securely mounted in a laboratory chassis, but manually swappable, to ensure credibility and accuracy of the sensors being used to test gas/air samples.

In various embodiments, rapid, sensitive detection of molecular hydrogen is achieved by receiving sample gas that includes ambient water vapor and hydrogen, passing the sample gas through a gas dryer, chemically converting hydrogen in the sample gas to water vapor to produce converted sample gas, measuring water vapor in the converted sample gas to produce a water vapor signal, separating the water vapor signal in the time domain into an ambient water vapor signal and a hydrogen-derived water vapor signal, wherein the gas dryer dampens variation in the ambient water vapor signal, and outputting a hydrogen signal that describes molecular hydrogen in the sample gas that is based on the hydrogen-derived water vapor signal.

An isolated sensor and method of isolating a sensor are provided. The isolated sensor includes a mounting portion, a sensor portion disposed adjacent to the mounting portion, and at least one pedestal connecting a mounting portion to a sensor portion.