A flow measurement apparatus can include a main flow passage, a variable flow restrictor, a bypass flow passage having an inlet connected with the main flow passage upstream of the variable flow restrictor and an outlet connected with the main flow passage downstream of the variable flow restrictor, and a mass flowmeter connected in the bypass flow passage between the inlet and the outlet. A method can include connecting a flow measurement apparatus, so that a fluid flow in a well also flows through the flow measurement apparatus, and varying a restriction to the fluid flow through the variable flow restrictor in response to a change in a flow rate of the fluid flow.

The invention relates to a fluid flow meter comprising a measuring section for a flow indicator with different measuring methods for flow velocity and fluid flow rate, comprising a housing with an inlet channel, an outlet channel and at least one flow indicator located therein, a housing interior space forming a shape which is complementary to the geometry of the flow indicator, and comprising two bottoms at least partially defining the interior space, and a curved part having a geometry that ensures the formation of a flow, at least one ultrasonic flow indicator being arranged such that the measuring section thereof runs through an inner part of the other flow indicator with another operating mode, and the fluid flow meter comprises an adaptor unit for adapting different diameters of an outlet of the flow indicator and the outlet channel thereof.

The invention relates to a fluid flow meter comprising a measuring section for a flow indicator with different measuring methods for flow velocity and fluid flow rate, comprising a housing with an inlet channel, an outlet channel and at least one flow indicator located therein, a housing interior space forming a shape which is complementary to the geometry of the flow indicator, and comprising two bottoms at least partially defining the interior space, and a curved part having a geometry that ensures the formation of a flow, at least one ultrasonic flow indicator being arranged such that the measuring section thereof runs through an inner part of the other flow indicator with another operating mode, and the fluid flow meter comprises an adaptor unit for adapting different diameters of an outlet of the flow indicator and the outlet channel thereof.

The method for inspecting the flow rate controller for controlling a flow rate of a fluid includes creating and recording a three-dimensional database in which a first pressure, a set flow rate or a second pressure, and a control value of a piezoelectric element are associated with each other, based on reference data, measuring, as target data, control values of the piezoelectric element corresponding to the first pressure detected by a first pressure detector and the set flow rate specified in a recipe of a substrate processing process or the second pressure detected by a second pressure detector, at the time of the execution of the substrate processing process, and determining whether or not there is a problem in a diaphragm valve, by comparing the target data with the reference data included in the three-dimensional database.

A device which: optically detects the presence of, measures the flow rate of, and identifies the characteristics of venting fugitive gas emissions. Specifically the device provides a spectral analysis of emission gas constituents; selective detection of the presence of venting hydrocarbons; measurement of venting emissions flow rates, the measurement of shut-in and flowing venting system pressures and the venting system temperatures. The flow rates are corrected, relative to the detection of the gas constituents and standard temperature and pressure (STP). These devices are configured to collect such data electronically and transmit via various telemetry systems, to a secure remote data network for reporting, access, evaluation, real-time monitoring and archiving as required.

A separation type multiphase flow meter apparatus (10) comprising a separation module (18) arranged to at least partially separate a multiphase stream comprising water, hydrocarbon liquid and hydrocarbon gas into a first sub-stream comprising a gas fraction and a second sub-stream comprising a liquid fraction. The apparatus comprises a first metering device (16) for measuring the flow rate of the first sub-stream, and a second metering device (17) for measuring the phase fraction and the flow rate of the second sub-stream, wherein the second metering device is arranged to measure the water-in-liquid ratio (WLR) of the second sub-stream, wherein the apparatus is arranged to use the WLR measured by the second metering device as a measure also for the WLR of the first sub-stream, and wherein the cross-sectional flow area of the first metering device is larger than the cross-sectional flow area of the second metering device.

A separation type multiphase flow meter apparatus (10) comprising a separation module (18) arranged to at least partially separate a multiphase stream comprising water, hydrocarbon liquid and hydrocarbon gas into a first sub-stream comprising a gas fraction and a second sub-stream comprising a liquid fraction. The apparatus comprises a first metering device (16) for measuring the flow rate of the first sub-stream, and a second metering device (17) for measuring the phase fraction and the flow rate of the second sub-stream, wherein the second metering device is arranged to measure the water-in-liquid ratio (WLR) of the second sub-stream, wherein the apparatus is arranged to use the WLR measured by the second metering device as a measure also for the WLR of the first sub-stream, and wherein the cross-sectional flow area of the first metering device is larger than the cross-sectional flow area of the second metering device.

A flowmeter (200) is provided. A first conduit (208A) having an inlet leg (212A) is fluidly coupled to a central conduit portion (212C) being fluidly coupled to an outlet leg (212′A). A second conduit (208B) having an inlet leg (212B) is fluidly coupled to a central conduit portion (212′C) fluidly coupled to an outlet leg (212′B). The flow inlet (210) is fluidly coupled to first ends of the first and second conduit (208A, 208B), and the flow outlet (210′) is fluidly coupled to second ends of the first and second conduits (208A, 208B). The inlet legs (212A, 212B) and the outlet legs (212′A, 212′B) comprise central conduit portions (212C, 212′C) disposed therebetween on the respective first and second conduits (208A and 208B). A manifold (206) is fluidly coupled to the inlet legs (212A, 212B) via a first fluid passage defined by the manifold, and the manifold (206) is fluidly coupled to the outlet legs (212′A, 212′B) via a second fluid passage defined by the manifold (206). A vibrable driver (214) is coupled to the manifold.

A device which: optically detects the presence of, measures the flow rate of, and identifies the characteristics of venting fugitive gas emissions. Specifically the device provides a spectral analysis of emission gas constituents; selective detection of the presence of venting hydrocarbons; measurement of venting emissions flow rates, the measurement of shut-in and flowing venting system pressures and the venting system temperatures. The flow rates are corrected, relative to the detection of the gas constituents and standard temperature and pressure (STP). These devices are configured to collect such data electronically and transmit via various telemetry systems, to a secure remote data network for reporting, access, evaluation, real-time monitoring and archiving as required.

An ultrasonic flowmeter having a measuring tube, a control unit, at least one first ultrasonic measuring unit and a second ultrasonic measuring unit, the measuring tube having a measuring tube interior and a measuring tube longitudinal axis, wherein each of the ultrasonic measuring units is arranged on the measuring tube, wherein each ultrasonic measuring unit has a first ultrasonic transducer and a second ultrasonic transducer, the first and the second ultrasonic transducers spanning a sound measuring section with a sound axis. The sound measuring section and the sound axis penetrate the measuring tube interior for carrying out ultrasonic measurements. To provide an ultrasonic flowmeter for reliable measurement of a multi-phase medium, the sound axis of the first ultrasonic measuring unit and the sound axis of the second ultrasonic measuring unit span a sound measuring plane which extends substantially parallel to the longitudinal axis of the measuring tube.