Sewer gas sampling and analyzing devices include a dish-shaped manhole insert having a manhole insert interior and a manhole insert exterior outside the manhole insert interior; a manhole insert vent valve carried by the manhole insert, the manhole insert vent valve having a valve inlet disposed in fluid communication with the manhole insert exterior and a valve outlet and the manhole insert vent valve facilitates substantially unrestricted flow of gas from the valve inlet to the valve outlet; and a gas detector unit disposed in fluid communication with the valve outlet of the manhole insert vent valve. Sewer gas sampling and analyzing methods are also disclosed.

A fluid sample system includes a control system that operates in the hazardous area and controls one or more valves and optionally receives outputs from one or more transducers and optionally one or more sensors. The fluid sample system includes components that operate in a hazardous area and includes a control system that operates in the hazardous area and that controls one or more electrical devices. The control system communicates across a barrier with a system on a safe side of the barrier with as few as two intrinsically safe couplings including a single pneumatic coupling and a communication link coupling. The control system includes an intrinsically safe voltage boost circuit.

A device and method for headspace sampling is disclosed herein. The headspace sampling device comprises a sample holding device configured to be sealed in a vial. The sample holding device has a pair of electrodes gap spaced from one another and a basket extending between the electrodes configured to hold a sample. The basket is configured to heat a sample held therewith and volatize at least a portion of the sample upon an electrical current being passed through the electrodes and the basket.

A method for detecting a volatile analyte to class and sort cork stoppers depending on concentration of the analyte, detection being performed of concentrations in the order of ng/L (parts per trillion), in a concentrated gas applied to the cork stoppers in closed containment. Under said method, cork stoppers are conveyed individually or groups to an incubation chamber (1); air/nitrogen is injected into the incubation chamber (1), the gas enriched with cork volatile compounds is entrained and carried to the concentration system containing a trap (4) heated by desorption of volatile compounds; the volatile compounds are carried by entraining gas to a detection system (6) recording a signal associated with presence of the analyte, the signal being used for classing the stopper/groups of stoppers; a software receives and compares the signal with a minimum limit, deciding to approve or reject the stopper. A system for implementing this method is described.

The invention relates to a connection system for connecting an inside environment of a compartment to an environment outside said compartment, said compartment being isolated relative to the outside environment and said connection system, said connection system comprising a blocking device.

The invention relates to a device for determining a volume of gas in a sample contained in a vessel, the device comprising: a frame configured to attach the vessel; a needle having a longitudinal axis, comprising a proximal part and a distal part, the distal part being configured to pierce the vessel and the proximal part comprising a lumen; and an analysis compartment comprising a cell in fluid communication with the lumen of the proximal part of the needle. The invention also relates to a method for determining a volume of gas in a sample contained in a vessel.

An air sampling actuator and associated method are disclosed. The air sampling actuator may include a housing configured to mount on a canister, a motor configured to be accommodated in the housing, and an adaptor. The motor may generate a mechanical action, in response to a control signal received by the motor. The adaptor may be coupled to the motor, and configured to interface with a valve-controlling knob of the canister. In a first configuration of the air sampling actuator, the adaptor may be uncoupled from the valve-controlling knob of the canister, and the hook portion may be unengaged with the canister. In a second configuration of the air sampling actuator, the adaptor may be coupled with the valve-controlling knob of the canister, and the hook portion may be engaged with the canister.

An example method for collection and analysis of particles from a particle generating source enclosed within an enclosure having an inlet and an outlet is described. The method includes supplying filtered air into the enclosure through the inlet, extracting, with a vacuum source, an aerosol stream including particles from the particle generating source through the outlet, directing the aerosol stream from the outlet of the enclosure to the vacuum source via a sampling tower. The sampling tower includes at least one nozzle for sampling the aerosol stream. The method includes detecting, with a detection instrument coupled to the nozzle, at least one characteristic of the particles in the aerosol stream, and outputting data concerning the detected characteristic of the particles in the aerosol stream to a computing device.

In a measuring method for measuring an atmospheric concentration of a compound, such as a volatile organic compound (VOC), an adsorptive element is provided within a target atmosphere for a period of time to allow adsorption of a compound of interest for measurement, and then removed from the target atmosphere, and placed within a closed measuring space. The adsorptive element is heated within the measuring space to cause de-adsorption of the compound into the closed measuring space, and a concentration of the de-adsorbed compound is measured. A concentration of the compound in the target atmosphere is determined based on the concentration of the compound within the closed measuring space. The adsorptive element may be formed of an adsorptive material such as carbon fibers, cellulose or other adsorptive materials, and a binder. The adsorptive element may be optimized for adsorption of a specific compound.

A sampling apparatus includes a pressure-reducing safety unit, which includes a device accommodation chamber that accommodates safety devices and a cylinder connection chamber, and a cylinder unit. The cylinder unit removably accommodates a cylinder, excluding an exposed portion where a front end portion of the cylinder, a mouthpiece, and a cylinder on-off valve are exposed, in an openable/closable casing. The exposed portion of the cylinder is formed so as to be insertable from the open surface portion of the cylinder connection chamber into the cylinder connection chamber, the mouthpiece of the cylinder and a hydrogen outlet of a supply pipe of the device accommodation chamber are connected by using a flexible hose, and thereby a sample of hydrogen gas is taken into the cylinder.