A method for using a chemical capture system with integrated calibration having a chamber which comprises an opening and a closing member, as well as a chemical sensor to be calibrated and a photoionization sensor which are positioned in the chamber, in which method: during a measurement step, the sensor to be calibrated and the photoionization sensor measure the gas mixture present in the chamber, defining an open interior space, so as to identify the gas mixture andduring a calibration step, the photoionization sensor generates ozone by photoionizing the dioxygen in the chamber, defining a closed interior space free of gas mixture, and the sensor to be calibrated measures the generated ozone, the difference between said measurement and a reference measurement making it possible to calibrate said sensor.

A gas detector capable of accommodating various gas detection techniques is provided. The gas detector includes a main body; a first gas detection module that is separably disposed on the main body; and a second gas detection module that is separably disposed on the main body. The first gas detection module includes: a first chamber; a first gas sensor that is separably disposed on the first chamber; and a first sensor base that is separably disposed on the first gas sensor. Furthermore, the second gas detection module includes: a second chamber; and a second sensor unit that is separably disposed on the second chamber. The connection layout of the first gas detection module with respect to the main body is the same as the connection layout of the second gas detection module with respect to the main body.

A detection device according to an aspect of the invention, includes: a housing including an air intake port and an air discharge port; a platelike member having a first air ventilation port and a second air ventilation port, the platelike member being provided inside the housing; a first sensor provided on an air intake port side of the first air ventilation port on a front face of the platelike member; and a second sensor provided between the first air ventilation port and the second air ventilation port on a rear face of the platelike member.

A system and method for determining a partial pressure of hydrogen in a volume. A response is measured of a section of an optical fiber disposed in the volume to a parameter of the volume. A partial pressure of hydrogen in the volume is determined from the response of the optical fiber to the parameter. The presence of hydrogen in the volume is determined from the partial pressure of hydrogen.

An air quality monitor connected to a server that can identify individual people as they move from room to room count the people in each room; the information is then used to determine each person's individual exposure to pollutants.

An example system is configured to estimate a concentration of an airborne glycol in an environment. The system includes a processor, a display device, a first sensor configured to generate first sensor data representing a concentration of particles in the environment having a diameter less than a threshold diameter, a second sensor configured to generate second sensor data representing a temperature of the environment, and a third sensor configured to generate third sensor data representing a humidity of the environment. The processor is configured to receive the first sensor data, the second sensor data, and the third sensor data: estimate, based on the first sensor data, second sensor data, and the third sensor data, the concentration of the airborne glycol in the environment; and present, using the display device, a visual indication representing the concentration of the airborne glycol in the environment.

A system comprising at least one thermal conductivity detector (TCD) configured to detect thermal conductivity in an ambient medium. Further, one or more sensors are configured to detect one or more inputs related to environmental conditions. Further, at least one hydrogen sensor is configured to detect presence of hydrogen in a sense medium. Further, one or more processors operationally coupled to at least one TCD, the one or more sensors, and at least one hydrogen sensors, are configured to determine a compensated thermal conductivity (TC) based on the one or more inputs received from the one or more sensors and the detected thermal conductivity from the at least one TCD; determine an estimated thermal conductivity (TC) based on the one or more inputs received from the one or more sensors; and determine a drift based at least on the compensated TC and estimated TC.

A chemical sensor system includes a first chemical sensor, a second chemical sensor unit, and a first sample atmosphere tank located between the first chemical sensor and the second chemical sensor unit, and includes an air supply mechanism that executes a first operation of supplying a sample atmosphere from the first chemical sensor to the first sample atmosphere tank, a second operation of supplying the sample atmosphere from the first sample atmosphere tank to the second chemical sensor unit, and a third operation of discharging the sample atmosphere in the first sample atmosphere tank.

A multi-sense platform is provided and includes a first sensor, a second sensor and a controller disposed in signal communication with the first sensor and the second sensor. The controller is configured to determine a presence of a first type of gas based on readings of the first sensor and to distinguish between a first one of the first type of gas and a second one of the first type of gas based on readings of the second sensor.

A system may include a flow valve coupled to a gas inlet of a landfill gas system and a pump coupled to the flow valve and configured to draw gas from the landfill gas system via the gas inlet. The system may further include an oxygen sensor comprising at least one laser configured to detect oxygen concentration in the gas, a carbon dioxide sensor comprising at least one infrared light source configured to detect carbon dioxide concentration in the gas, and/or one or more chemical sensors configured to sense concentrations of a respective one or more chemicals in the gas. A microprocessor may determine sensed data including at least the oxygen concentration, the carbon dioxide concentration, concentrations of the one or more chemicals, the static pressure, the atmospheric pressure, and/or a differential pressure, and communicate the sensed data to a mobile control device.