A multi-phase sampling collection system includes a three-way four-port valve unit that includes a valve housing having a first port, a second port opposite the first port, and a third port. The valve unit includes an inner valve member that is movably disposed within the valve housing between a plurality of positions. The inner valve member has a main valve body that has a first valve opening, a second valve opening opposite the first valve opening, a third valve opening and a fourth valve opening opposite the third valve opening. The third valve opening is defined by a plurality of orifices for mixing incoming non-homogenous fluid to generate a mixed homogenous fluid and the fourth valve opening has a lesser diameter that the third valve opening for increasing fluid pressure drop, fluid velocity, and fluid turbulence resulting in improved mixing of the non-homogenous fluid that exits through the fourth valve opening.

A system for stereoscopic and real-time monitoring of an ocean methane profile includes a waterborne communication floating body, a gravity anchor, and a monitoring mechanism disposed therebetween, wherein the monitoring mechanism includes a submarine methane leakage intensity monitoring apparatus, a plurality of methane monitoring apparatus capable of synchronously monitoring methane content and a hydrodynamic environment, and a plastic-coated steel cable connected between the waterborne communication floating body and the gravity anchor; a data acquisition cabin is connected to the plastic-coated steel cable through a first communication module; and a first floating ball assembly is connected to the plastic-coated steel cable through a fixing rope. The submarine methane leakage intensity monitoring apparatus and the plurality of methane monitoring apparatus are disposed between the gravity anchor and the waterborne communication floating body at predetermined intervals.

A device for detecting a content of critical gas in a mining chamber of a tunnel boring machine includes a separation module by which a fluid fed in via an extraction line connection is cleaned of solid and liquid components. A gas line arrangement arranged downstream of the separation module in the flow direction of the fluid carries the fluid, including substantially only gaseous components, through a pressure reducer and through a flow control valve of a metering module by which the gas to be analyzed can be delivered in a controlled manner assisted by a double diaphragm pump and a pressure stabilizer to a gas analysis unit even at high pressures in the cavity.

A real-time measuring device of oxygen concentration in a droplet environment, comprising: a measurement pipeline, a gas-liquid separation structure installed inside a side of the gas inlet of the measurement pipeline, a pressure sensor, a zirconia oxygen concentration sensor with a builtin thermal resistor, a digital signal converter, a signal amplifier and a signal processing unit sequentially installed at the gas outlet of the measurement pipeline, wherein the pressure sensor, the thermal resistor and the zirconia oxygen concentration sensor are connected to the digital signal converter and the signal amplifier, respectively, and the signal processing unit obtains the amplified and AD converted zirconia oxygen concentration sensing signal, pressure sensing signal and the temperature sensing signal and calculates real-time oxygen concentration.

The present disclosure relates to methods, devices, and systems for measuring nitric oxide released from a material. For example, a method of measuring nitric oxide release from a material can include introducing a continuous flow of a carrier gas into a sample holding chamber via a carrier gas inlet at an effective flow rate, introducing an amount of the nitric oxide releasing material into the sample holding chamber via a separate sample inlet to contact the continuous flow of the carrier gas, directing the carrier gas and released nitric oxide out of the sample holding chamber via a nitric oxide outlet toward a nitric oxide detector, and quantifying an amount of released nitric oxide using the nitric oxide detector.

The present invention refers to a method for the isokinetic sampling of liquids and gases present in streams having many fluid phases, and to an apparatus suitable for achieving it. The method and apparatus have application in particular in the field of oil extraction, wherein, after the extraction of liquid and gaseous hydrocarbons possibly accompanied by water and suspended solids, it is necessary to know the composition of the mixture extracted and also the flow rate of the single phases.

A system and method calibrate efficiency of a gas extraction system in extracting hydrocarbons from mud flowing in a drilling operation. A background reading of a hydrocarbon is extracted from the mud flowing in the drilling operation with the gas extraction system and is checked for stability. An injection operation injects a known concentration of the hydrocarbon into mud, and a subject reading of the hydrocarbon is obtained with the gas extraction system during the injection operation. A correction factor of the hydrocarbon is determined for the gas extraction system by comparing the subject reading against its corresponding known concentration. Then, at least one operational reading of the hydrocarbon extracted from the mud with the gas extraction system can be corrected using the determined correction factor.

A sample handling system receives a downhole sample. The sample handle system conditions the sample using a separator and filters to allow discharge of unwanted liquids and particulates prior to flowing the sample to one or more analyzers. Separating the moisture and particulates from the sample improves the operation of the components of the sample handling system, for example, by eliminating unwanted condensate or moisture. A coalescing filter, for example, may protect a proportional valve by removing unwanted particulates and liquids from the sample. Additionally, main components of the sample handling system are accessible from a front of a housing to allow for ease of repair and replacement.

There is provided a device comprising a degassing valve, a conduit for collecting gas released from the degassing valve, a gas sensor able to detect a gas connected to the conduit and arranged to provide a signal corresponding to a concentration of the gas, an alarm device arranged to receive the signal from the gas sensor and to provide an alarm when the concentration of the gas is above a threshold level.

A sensor system (100) or a sensing method minimizes the loss of aroma chemicals or other analytes in a sample gas while controlling the temperature and humidity of the sample gas. The system (100) may employ a humidifier (120) that adds water vapor to sample gas to provide a known water content, e.g., a saturated humidity at a known temperature. A sensing unit (130) may accurately measure the composition of the sample gas having a known water content, e.g., at a higher known temperature.