A cryogenic liquid sampling system including a chamber having affixed therein a sample pump to pull a cryogenic liquid sample from an external source and an enclosure. The enclosure includes a supply port to receive an input stream of a gas, an input port connected to the chamber via a vacuum line, a sample pump port connected to the chamber via a pump line and configured to feed therethrough gas received at the supply port to the sample pump, a vacuum device connected to the input port and configured to generate a vacuum within the chamber by pulling air from the vacuum line, and processing circuitry to control the vacuum device and the sample pump to perform transfer of a cryogenic liquid sample from the external source to an external device.

An apparatus for sampling landfill gas from a landfill flowing through a pipe. The apparatus may comprise: an enclosure configured to receive a section of the pipe; a gas sampling port in the section of the pipe; at least one sensor device disposed in a region of the enclosure, the at least one sensor being coupled to the section of the pipe through the gas sampling port; and thermal insulation positioned to retain heat from the section of the pipe in the region of the enclosure. A method of operating a landfill gas recovery system. The method may comprise: flowing gas from a well riser pipe through a sampling subsystem to a collection system; and heating a portion of the sampling subsystem with the gas flowing from the well riser pipe to the collection system.

The invention provides a sampling apparatus for sampling fluid from a pipeline system during a pigging operation and a method of use. The sampling apparatus comprises an inlet configured to be coupled to the pipeline system, for receiving a fluid carried by a pigging operation from the pipeline system, and an outlet for discharging fluid from the sampling apparatus. A flow control valve is disposed between the inlet and the outlet. A first flow line is in communication with a sampling circuit and is disposed between the inlet and the flow control valve. A second flow line is in communication with a sampling circuit, and is disposed between the outlet and the flow control valve. The flow control valve is operable to be partially closed to create a pressure differential between the first and second flow lines, and drive a fluid passing through the sampling apparatus into the sampling circuit.

A probe assembly for providing a flow of a fluid from a pipeline into a sample transport line or slipstream, comprising: an outer tubular probe tip attached to a distal end of an outer tube mid-section; wherein the outer tubular probe tip has an outer opening; a connection head having an outer tube attached to a proximal end of an outer tube mid-section; wherein the outer tubular probe tip, the outer tube mid-section, and the outer tube are of a first inner diameter; wherein the outer opening of the outer tubular probe tip receives a flow of the fluid from within the pipeline that travels through the outer probe tip, the outer tube mid-section, the outer tube and connection head into the sample transport line or slipstream; a return tube, having an outer diameter smaller than the first inner diameter, disposed through the center of each of the outer tubular probe tip, the outer tube mid-section, the outer tube and the connection head; a first connection fitting for connecting return tubing to connection head; and a second connection fitting for connecting return tubing to the sample transport line or slipstream.

A system and an arrangement for measuring a gas flowing in a gas line, the system comprising an extraction probe having an inlet opening for extracting a gas flowing in a gas line, an outlet opening for at least partially outputting the extracted gas into the gas line, and an extraction line which fluidically connects at least the inlet opening and the outlet opening, the extraction probe being configured in such a way that at least the inlet opening and the outlet opening are arrangeable in the gas line, the extraction probe being configured in such a way that the outlet opening is arrangeable downstream of the inlet opening along a flow direction of the gas; at least one measuring device for measuring the gas, the extraction line having at least one interface via which the gas is directable at least partially to the measuring device.

A hydrocarbon line sampler connected to a pipeline containing hydrocarbon fluid, the sampler including a draw mechanism and a sampling can. The sampler includes a detector for testing a quality attribute of the fluid. The detector passes a signal to a controller, the controller being preprogrammed with a set threshold of one or more quality thresholds. When a quality threshold is met, the controller can modify the sampling regimen for later storage or further on-site testing. The invention includes a method of drawing a sample, testing the sample, determining the quality of the sample, and modifying the sampling regimen as need, or otherwise setting an alarm, or taking action on the pipeline system.

A ballast water monitoring device and a method for detecting live phytoplankton are disclosed. The device comprises a chamber for receiving a sample, at least one light source to emit light towards the sample, a light detector to receive light from the sample and generate a light signal, and a controller. The controller is configured to control the at least one light source to emit a single pulse of light, calculate the variable fluorescence [Fv] of the sample in response to the pulse of light, at time intervals less than the duration of the pulse of light, compare the calculated variable fluorescence to a predetermined reference limit, and perform an action if the calculated variable fluorescence is greater than the predetermined reference limit.

This invention concerns methods of determining properties of oil, especially crude oil with a spectrometer. This invention also concerns a crude oil analytical and single or multi-stream sampling device which is particularly suitable for the online measurement of crude oil properties with a spectrometer (8). This invention further concerns a crude oil sampling procedure which is particularly suitable for the online measurement of crude oil properties with a spectrometer.

A sample take-off system incorporating a small volume pump with a speed loop for pressurizing excess extracted sample for return into the process stream using a single multi-channel probe for both take-off and return of the excess extracted sample is illustrated and described.

The present invention relates to a system to detect mercaptides or sulfides in a caustic stream. More particularly, this invention relates to an on-line analyzer for measuring mercaptides using a color changing reagent to quantify mercaptide or sulfide concentration in a caustic stream. The on-line analyzer which includes a liquid sensor which can provide valuable feedback to an operator for controlling a processing unit for the catalytic oxidation of mercaptides to disulfides in an alkaline environment.