There is disclosed a method of calibrating a gas sensor comprising a luminescent compound having a luminescence lifetime that is quenched by a gaseous substance which uses a model of the relationship between the luminescence lifetime and the concentration of the gaseous substance that is modified by a calibration factor representing a proportion of the compound not being exposed to the gaseous substance, the method comprising: measuring values of the luminescence lifetime of the luminescent compound while the gas sensor is exposed to at least two known concentrations of the gaseous substance; and deriving the calibration factor from the measured values of the luminescence lifetime using the model. Also disclosed are a corresponding gas sensor apparatus for measuring the concentration of a gaseous substance in an environment, and method of measuring a concentration of a gaseous substance in an environment using a gas sensor.

A sensor system that removes responses from an interferent and/or corrects for baseline drift of a sensor to determine a presence, a concentration or a change in concentration of a target material in a gaseous environment. Fluid flowing into the system may be directed by a valve arrangement to either a first fluid flow path or a second fluid flow path. The target material may be absorbed by a filter material in the first fluid flow path. Fluid flowing along the second gas flow path passes directly to the sensor. Responses of the sensor to fluids from the first and second fluid flow paths may be used to determine a presence, concentration or change in concentration of the target material.

A method includes receiving, from an imaging device associated with a robotic apparatus, an image signal including an object of interest represented in the image signal; receiving, by the robotic apparatus from an external agent, a task indication related to the object of interest, the task indication representative of a task to be performed by the robotic apparatus with respect to the object of interest; and responsive to receipt of the task indication: detecting salient features of the object of interest within the image; storing, by the robotic apparatus, a task context, the task context comprising data pertaining to the salient features and data pertaining to the task indication; and commencing, by the robotic apparatus, the task with respect to the object of interest.

A gas detecting module is disclosed. A gas-inlet concave and a gas-outlet concave are formed on a sidewall of a base. A gas-inlet-groove region and a gas-outlet-groove region are formed on a surface of the base. The gas-inlet concave is in fluid communication with a gas-inlet groove of the gas-inlet-groove region, and the gas-outlet concave is in fluid communication a gas-outlet groove of the gas-outlet-groove region. The gas-inlet-groove region and the gas-outlet-groove region are covered by a thin film to achieve the effectiveness of laterally inhaling and discharging out gas relative to the gas detecting module.

An electronic device comprises a gas sensor sensitive to a target gas and arranged inside a housing of the electronic device or attached thereto, to detect a concentration of the target gas in an environment of the electronic device. A processing unit is provided and configured to determine a concentration of the target gas outgassed from one or more components of the housing or inside the housing dependent on one or more first measurement results supplied by the gas sensor in response to one or more first measurements, and to determine the environmental target gas concentration dependent on the determined outgassed target gas concentration and dependent on a second measurement result (R.sub.OM) supplied by the gas sensor in response to a second measurement (OM). Outgassing is understood as the release of chemical substances from the one or more components.

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.

The technology relates to transportable gas detector and associated methods. The transportable gas detector comprises a gas sensor housed within a chamber and configured to detect gas in the environment surrounding the chamber. To test the gas sensor, test gas is pumped from a gas source directly into the chamber from the one or more inlets.

A method for producing a pneumatic module, a gas analysis device comprising at least one such pneumatic module, a computer program product via which the operating characteristics of a corresponding pneumatic module can be simulated, wherein the pneumatic module serves to adjust a fluid flow and is deployable in the gas analysis device and includes a support sleeve and a flow module that is contained in the support sleeve, where the flow module is connected at a first end thereof to the support sleeve in order to achieve greater measuring accuracy of the gas analysis device.

The present application is directed to a method of measuring the concentration of radicals in a gas stream which includes the steps of flowing a radical gas stream emitted from at least one radical gas generator to at least one processing chamber, providing at least one sampling reaction module having at least one sampling tube therein, establishing a reference temperature of the sampling tube with at least one thermal control module, diverting a portion of the radical gas steam from the radical gas generator into the sampling tube, reacting at least one reagent with at least one radical gas within a defined volume of the radical gas stream thereby forming at least one chemical species within at least one compound stream, the compound stream flowing within the sampling tube, measuring a change of temperature of the sampling tube due to interaction of the chemical species within the compound stream and the sampling tube with sensor module, and calculating a concentration of the chemical species within the compound stream flowing within the sampling tube based on the measured temperature change of the sampling tube.

A method of operating a gas sensor for a gas analyte including a sensing component includes, in a first mode, interrogating the sensor by periodically applying an electrical signal to the sensing component of the sensor, measuring sensor response to the electrical signal which is indicative of a sensitivity of the sensor each time the electrical signal is applied to the sensing component, determining whether one or more thresholds have been exceeded based upon the sensor response determined each time the electrical signal is applied to the sensing component, and entering a second mode, different from the first mode in analysis of the sensor response to the periodically applied electrical signals, if one or more thresholds are exceeded.