A plug-in air quality detector, a control method, and a control circuit are provided in the field of air quality detection. The plug-in air quality detector comprises a casing, a sensor component, a control circuit and a connector component. The connector component includes a power supply terminal and a data terminal, and is configured to connect the plug-in air quality detector with a user device. As such, the detector may prompt a user of the air quality around the user without being configured with a dedicated power supply and a dedicated display screen, thereby achieving the effects of reducing the size and the weight of the air quality detector and improving the ease of use.

A system and method for chemical analysis are described herein. The system includes a probe, a sample collection cartridge, and a chemical analyzer. The probe is configured to collect the optimal amount of sample for a future analysis and to store this chemical sample in the sample collection cartridge. The probe also collects sample data. The chemical analyzer is configured to determine the optimal analysis settings based on the sample data and analyze the chemical sample stored in the sample collection cartridge based on the optimal analysis settings.

A system for on-stream sampling of pressurized process gas such as natural gas or the like, including pressurized process gas having liquid entrained therein, or otherwise referenced as “wet”. The preferred embodiment of the present invention contemplates a system for obtaining an accurate sample of process gas, as well as providing an apparatus for obtaining same.

An aircraft-mountable inflow and outflow apparatus has an accumulating sleeve, an inflow line and at least one exit opening. The regulating sleeve has an entry opening. The inflow line has a supply-line connection for a respective supply line. The accumulating sleeve forms a first supply-line portion, is designed for insertion into a respective shaft of the respective inflow and outflow apparatus and is dimensioned such that, in a state in which the insert has been inserted into the respective shaft, the entry opening of the accumulating sleeve is located in the vicinity of an opening between a respective head part and the respective shaft of the respective inflow and outflow apparatus. Furthermore, the accumulating sleeve is connected to the supply-line connection for a respective supply line via the entry line, which constitutes a second supply-line portion.

An air monitoring system with a controller in a computer system that operates to control a pump system to move air from a collection port for a cavity as diverted air to a tube connected to the collection port, move the diverted air into an input port of an air interface connected to the tube, through a chamber in the air interface, and out of a pump port of the air interface without increasing a pressure of the diverted air greater than a pressure level for a gas analyzer system to analyze an air sample collected from the diverted air. The controller operates to control the gas analyzer system connected to a sampling port in the air interface by a probe to obtain the air sample from the diverted air moving through the air interface and analyze the air sample to determine a set of components in the air sample.

Embodiments of the disclosure include a miniature optical PM sensor module. A miniature optical particulate matter sensor module may comprise a housing; a micro airflow generator positioned within the housing; an actuator positioned adjacent to the micro airflow generator and configured to drive the micro airflow generator; a miniature particulate matter sensor board assembly in fluid communication with the micro airflow generator; and a flex cable assembly configured to attach to at least one of the housing and the miniature particulate matter sensor board assembly.

A method for collecting particles or gaseous chemicals is provided. The method includes providing liquid to a tube of a droplet generator, heating, with a heater of the droplet generator, the tube to provide vapor to a gas flow channel inside the tube, passing a gas flow containing the particles or gaseous chemicals through the gas flow channel inside the tube to obtain droplets including the particles or gaseous chemicals, and passing the droplets including the particles or gaseous chemicals to a wall of a collecting device such that the droplets including the particles or gaseous chemicals hit the wall. The temperature inside the gas flow channel is higher than a temperature inside the collecting device.

A pressure reduction system and methods therefore that include features for reducing the pressure of a high pressure aerosol to ambient pressure without significantly changing the characteristics of the aerosol are provided. In this manner, the non-volatile particulate matter concentration in a sample stream obtained from the aerosol stream at ambient pressure is representative of the non-volatile particulate matter concentration that was present in the aerosol stream at high pressure prior to the pressure reduction.

An air sampling device and method of sampling air. The device has a housing body and a retaining assembly for a sampling device. A plenum has a top end coupled to the housing body about an opening such that the plenum is in flow communication with the opening and receives air flow generally from the top end to the bottom end generally along the longitudinal length thereof. A flow connection is coupled to the bottom end of the plenum. A mass flow meter has an input coupled to the flow connection and is in flow communication with the plenum via the flow connection. A blower is configured to draw air past the sampling device, through the opening, and through the plenum, such that a measuring portion of the air flows through the flow connection and through the mass flow meter, which measured the flow rate of the measuring portion.

Ion modification An ion mobility spectrometer (100) comprising a sample inlet (108) comprising an aperture arranged to allow a sample of gaseous fluid to flow from an ambient pressure region to a low pressure region of the ion mobility spectrometer to be ionised; a controller (200) arranged to control gas pressure in the low pressure region to be lower than ambient pressure; and an ion modifier (126, 127, 202) configured to modify ions in the low pressure region, wherein the ions are obtained from the sample of gas.