Systems and methods for blending fluids are provided. A blended fluid may be obtained by mixing a first fluid from a first fluid source with a second fluid from a second fluid source. The blended fluid may be pumped by a pump arranged downstream of a point at which the first and second fluids are mixed, wherein no other pumps are upstream of the pump. First and second flow control valves that control the flow rate of the first and second fluids, respectively, are adjusted so as to reach a target flow rate of the blended fluid, the blended fluid having a target blend of the first fluid and the second fluid.

The invention relates to an apparatus for the optical in-situ gas analysis that comprises a housing; a measuring lance whose one, first end is connected to the housing and whose other, second end projects into the gas to be measured; a light transmitter arranged in the housing whose light is conducted into the measuring lance and is reflected onto a light receiver by a reflector arranged at the second end, wherein the optical path defines an optical measurement path within the measuring lance; a gas-permeable filter through which the gas to be measured moves into the measurement path; and an evaluation device for evaluating received light signals of the light receiver. To provide an improved apparatus with which the problem of the condensate formation can be counteracted better, provision is made that the measuring lance has an agitation apparatus for agitating the gas in the measuring lance.

A gyroscopic rotational monitoring system may be utilized for monitoring one or more properties of rotatable container or vessel, and/or one or more properties of a displaceable material contained in the rotatable vessels. An exemplary aspect relates to the use of a gyroscope and periodicity sensor (e.g., accelerometer) to determine rotational speed of a concrete mixing drum, so that the slump or other property of the concrete can be monitored or adjusted such as by dosing with water, chemical admixtures, or mixture thereof.

The invention is a package (1) for stereolithography comprising a container (2) filled with stereolithography resin (3), provided with an access opening (4), and a mixer element (5) arranged in a removable manner in the container (2) and provided with at least one magnet (6).

Mixing equipment for hydraulic fracturing operations undergoes wear with continued use. Monitoring the performance of the mixing equipment and predicting failure may be performed by measuring discharge pressures or hydrodynamic acoustic noise. Computer modeling and machine learning may be employed to help operators decide whether to take equipment out of service for maintenance or to allow the equipment to continue operating.

A microtiter plate mixing control system is disclosed. The system includes a frame, a suspension system attached to the frame, and a magnetically responsive horizontal platform supported on the frame by the suspension system. A solenoid is adjacent the platform for moving the platform on the suspension system. A proximity sensor is adjacent the platform for determining the position of the platform with respect to the frame. A controller is in communication with the proximity sensor and the solenoid for driving the solenoid and moving the platform in response to the proximity sensor.

A blender using different charging modes with wireless charging is disclosed. Exemplary implementations may include a base assembly, a container assembly, an electrical motor, a blending component, a control interface, blending control circuitry, charging control circuitry, and/or other components. The base component may include a rechargeable battery and a wireless charging interface. The charging control circuitry may be configured to make different types of detections related to the availability and/or usage of electrical power and related to the usage and alignment of the wireless charging interface with an external charging structure. The charging control circuitry may conduct electrical power to the rechargeable battery using at least two different charging modes, thus providing different amounts of electrical power to the rechargeable battery in different charging modes.

An apparatus and process for steam reforming can be configured to produce at least one product with reduced carbon dioxide and/or nitrogen oxide emissions. Some embodiments can be better adapted for retrofitting a pre-existing steam reforming process while other embodiments can be better adapted for use in a newly constructed facility. Embodiments can be configured to utilize a synthetic air oxidant to provide combustion that results in formation of a flue gas having relatively high carbon dioxide concentrations that may also have low nitrogen and low nitrogen oxide concentrations. A control system can be configured for utilization in such embodiments to control the steam reforming process and/or oxidant formation process as well. Some embodiments can also be configured to provide carbon dioxide recovery that can permit recovery of a second product stream comprised of carbon dioxide.

A blender using different charging modes with wireless charging is disclosed. Exemplary implementations may include a base assembly, a container assembly, an electrical motor, a blending component, a control interface, blending control circuitry, charging control circuitry, and/or other components. The base component may include a rechargeable battery and a wireless charging interface. The charging control circuitry may be configured to make different types of detections related to the availability and/or usage of electrical power and related to the usage and alignment of the wireless charging interface with an external charging structure. The charging control circuitry may conduct electrical power to the rechargeable battery using at least two different charging modes, thus providing different amounts of electrical power to the rechargeable battery in different charging modes.

Electronic devices for treating a biological fluid and methods of operating the devices are disclosed. In some embodiments, the electronic device includes a plurality of non-safety critical components, a first controller communicatively coupled to the plurality of non-safety critical components, a plurality of safety critical components, and a second controller communicatively coupled to the plurality of safety critical components. In some embodiments, the electronic device includes a treatment interface.