A sampling system and relief valve are disclosed. The system can include a bypass loop for receiving a fluid. The system can also include sample receivers. The system further includes a sample extractor configured to obtain a sample of the fluid in the bypass loop to deposit to the one or more sample receivers. The system also includes a relief valve coupled between a fluid outlet of the sample extractor and at least one of the sample receivers. The relief valve includes a valve body having a fluid passage therethrough. The relief valve can also include a stem and a seat disposed in the valve body. The seat is configured to abut against the stem when the stem is biased into a closed position against the seat. At least a portion of the stem of the relief valve is formed of a diamond sintered material.

A positive pressure displacement fluid sampler, comprising: a sample probe disposed in a sample probe connection; a needle valve in communication with the sample probe; a three-way solenoid valve disposed between the needle valve, a sample collection body and a sample collection tank; an adjustment stem for adjusting the size of the sample to be collected on each draw; and a confirmation switch for sending an electronic or other type signal for confirming that a sample or samples have actually been collected at prescribed times and/or frequencies. The displacement sampler may be spring-loaded and the confirmation switch may comprise a radio transmitter.

An apparatus includes a body having a central axis, a fluid inlet coupled to the body, the fluid inlet being adapted to receive a flow of a fluid, and a fluid outlet coupled to the body. The fluid inlet and the fluid outlet are substantially coaxially aligned so as to define a flow axis through the apparatus, and the flow axis is laterally offset from and perpendicular to the central axis of the body. A rotating blade assembly is disposed within said body and includes a plurality of blades, wherein the rotating blade assembly is adapted to be controllably rotated about the central axis so as to control a fluid level of the flow of fluid entering the fluid inlet.

Systems and methods for automatic sampling of a sample for the determination of chemical element concentrations and control of semiconductor processes are described. A system embodiment includes a remote sampling system configured to collect a sample of phosphoric acid at a first location, the remote sampling system including a remote valve having a holding loop coupled thereto; and an analysis system configured for positioning at a second location remote from the first location, the analysis system coupled to the remote valve via a transfer line, the analysis system including an analysis device configured to determine a concentration of one or more components of the sample of phosphoric acid and including a sample pump at the second location configured to introduce the sample from the holding loop into the transfer line for analysis by the analysis device.

A gasoline blend spot sampling system and method including an adjustable volume mechanism for retaining an adjustable volume of gasoline for sampling, a coolant system integrated with the adjustable volume mechanism, and a sample collection assembly using a blunt-end tube for use with an open-mouthed bottle. Various three-way valves are actuated to route gasoline through various stages of a sampling process, from a gasoline fast loop to a purge loop to a gasoline capture stage to a sample bottling stage.

A positive pressure displacement fluid sampler, comprising: a sample probe disposed in a sample probe connection; a needle valve in communication with the sample probe; a three-way solenoid valve disposed between the needle valve, a sample collection body and a sample collection tank; an adjustment stem for adjusting the size of the sample to be collected on each draw; and a confirmation switch for sending an electronic or other type signal for confirming that a sample or samples have actually been collected at prescribed times and/or frequencies. The displacement sampler may be spring-loaded and the confirmation switch may comprise a radio transmitter.

A fluid sampling device including an inlet configured to receive a portion of a non-homogeneous fluid flowing through a conduit, a first double block bleed valve coupled to the inlet, a first flexible hose coupled to the first double block bleed valve by a first quick acting and leakage free coupling, a collection drum coupled to the first flexible hose by a first control valve, and a container coupled to the connection drum by a manual valve, wherein the device is configured to collect a fluid sample in the container. The device also includes a pressure controller to control pressure within the collection drum, and a level indicator to indicate a level of fluid in the collection drum.

The present invention relates to a device (10) for sampling solid particles from a sealed enclosure (12), sampling device (10) comprising a tubular body (18) carrying a sampling head (16), sampling head (16) being configured for gravity sampling of a volume of solid particles (14) from the enclosure, the device comprising a tubular pipe (52) attached to tubular body (18) and forming a non-zero angle with tubular body (18), tubular body (18) comprising a deflector (50) for deflecting solid particles (14) in tubular pipe (52). Additionally, sampling device (10) comprises a capacitive valve for discharge of the solid particles positioned downstream from tubular pipe (52).

The invention also relates to a method for sampling solid particles, and a method for revamping a sampling device (10).

Piston and cylinder apparatus for determining dissolved and entrained gas content of a liquid comprising: two conterminal and axially-aligned cylinders of different diameters; a first piston contained in the larger cylinder and a second piston of diameter less than the smaller cylinder axially placed within the first piston; movement of first piston and closure of isolation valves to isolate liquid sample in the smaller cylinder; extension of second piston into smaller cylinder to compress and determine entrained gas in the liquid; retraction of first and second pistons to apply vacuum to the isolated sample thereby releasing dissolved gas; extension of first piston to isolate liquid sample and released gas in the smaller cylinder; extension of second piston into smaller cylinder to compress and determine the total volume of gas; calculation of the dissolved gas from the difference between total gas and entrained gas.

A gas detection system includes a plurality of sampling assemblies, at least one detector and a control unit. The plurality of sampling assemblies respectively include at least one inlet channel, a first pump and a first valve. The first pump is communicated between the at least one inlet channel and the first valve, and the first valve is switchable between a sampling state and a pre-sampling state. The at least one detector is selectively communicated with the first valve of one of the plurality of sampling assemblies. The control unit is communicative with the plurality of sampling assemblies and controls said first valves of the plurality of sampling assemblies. When the first valve of one of the plurality of sampling assemblies is in the sampling state, the first valve of another one of the plurality of sampling assemblies is in the pre-sampling state.