A method is for determining a gas amount, which can be dispensed by a dispensing device, in particular in the form of a hydrogen gas amount, by a gas meter (36). A part of the main gas stream flowing to the dispensing device (26) is branched off by a flow divider (20) mounted upstream of the dispensing device (26), when viewed in the direction of the gas stream, for a quantitative measurement in the secondary flow by the gas meter (36).

A sensor is provided for determining at least one parameter of a fluid medium flowing through a measurement channel, in particular an intake air mass flow of an internal combustion engine. The sensor has a sensor housing, in particular a plug-in sensor that is inserted into or is insertable into a flow tube, in which sensor a measurement channel is fashioned, and has at least one sensor chip situated in the measurement channel for determining the parameter of the fluid medium. The sensor housing has an electronics compartment for accommodating an electronics module and has an electronics compartment cover for closing the electronics compartment. The electronics compartment cover has, at least in part, electrically conductive properties. For example, the electronics compartment cover is placed onto the electrical ground of the sensor and, viewed in projection, partly or completely covers the sensor chip.

A sensor is provided for determining at least one parameter of a fluid medium flowing through a measurement channel, in particular an intake air mass flow of an internal combustion engine. The sensor has a sensor housing, in particular a plug-in sensor that is inserted into or is insertable into a flow tube, in which sensor a measurement channel is fashioned, and has at least one sensor chip situated in the measurement channel for determining the parameter of the fluid medium. The sensor housing has an electronics compartment for accommodating an electronics module and has an electronics compartment cover for closing the electronics compartment. The electronics compartment cover has, at least in part, electrically conductive properties. For example, the electronics compartment cover is placed onto the electrical ground of the sensor and, viewed in projection, partly or completely covers the sensor chip.

A flowmeter is inserted into a main passage through which a target fluid flows. The flowmeter includes a housing, a sub passage, an inlet portion, an outlet portion, a flow rate detector, and a protrusion. The housing includes a side surface and a tip end surface. A part of the target fluid flows into the sub passage from the main passage. The target fluid flows into the sub passage through the inlet portion and flows out of the sub passage through the outlet portion. The flow rate detector is configured to detect a flow rate of the target fluid flowing through the sub passage. The tip end surface includes a first end area and a second end area. The protrusion protrudes from the tip end surface and is located in both the first end area and the second end area.

The present disclosure provides a flow rate measuring device for measuring a flow rate of a main flow flowing through a duct. The flow rate measuring device includes a bypass passage, a blow rate sensor, and a measurement body. The measurement body includes a measurement flow inlet and a cylindrical portion. The measurement flow inlet is open toward an upstream side of the duct. The measurement flow outlet is open toward a downstream side of the duct. The cylindrical portion is disposed to cover the measurement flow outlet. The cylindrical portion includes an outer circumferential surface, which guides the main flow, and an inner circumferential surface, which guides the measurement flow. The cylindrical portion includes a waveform portion that is formed in an edge side of an opening of the cylindrical. The waveform portion has a shape that divides the main flow guided by the cylindrical portion into a plurality of main flows and that divides the measurement flow guided by the cylindrical portion into a plurality of measurement flows.

The present disclosure provides a flow rate measuring device for measuring a flow rate of a main flow flowing through a duct. The flow rate measuring device includes a bypass passage, a blow rate sensor, and a measurement body. The measurement body includes a measurement flow inlet and a cylindrical portion. The measurement flow inlet is open toward an upstream side of the duct. The measurement flow outlet is open toward a downstream side of the duct. The cylindrical portion is disposed to cover the measurement flow outlet. The cylindrical portion includes an outer circumferential surface, which guides the main flow, and an inner circumferential surface, which guides the measurement flow. The cylindrical portion includes a waveform portion that is formed in an edge side of an opening of the cylindrical. The waveform portion has a shape that divides the main flow guided by the cylindrical portion into a plurality of main flows and that divides the measurement flow guided by the cylindrical portion into a plurality of measurement flows.

A system for measuring the vital parameters of low care patients is described. The system includes a connecting element for a nasal cannula or breathing mask for providing a fluidic connection with the patient and a flow and/or pressure sensor in fluidic connection with the nasal cannula or breathing mask, for sensing, when the nasal cannula or breathing mask is connected to the system, at least a negative pressure signal. The system also includes a processor configured for deriving, directly based on said at least a negative pressure signal, information related to the breathing cycle, and an output means configured for outputting at least one vital parameter of the patient, the outputting comprising outputting information related to the breathing cycle.

In order to provide a method of manufacturing a thermal type flowmeter that is capable of reducing deformation of a semiconductor chip, which is caused by molding, a method of manufacturing a thermal type flowmeter is provided that includes a circuit package of a resin-molded semiconductor chip. The method includes resin-molding the semiconductor chip in a state in which a mold is pressed against a heat transfer surface that is provided on a surface of the semiconductor chip and a pressed surface that is set on the surface of the semiconductor chip at a position separate from the heat transfer surface.

In order to provide a method of manufacturing a thermal type flowmeter that is capable of reducing deformation of a semiconductor chip, which is caused by molding, a method of manufacturing a thermal type flowmeter is provided that includes a circuit package of a resin-molded semiconductor chip. The method includes resin-molding the semiconductor chip in a state in which a mold is pressed against a heat transfer surface that is provided on a surface of the semiconductor chip and a pressed surface that is set on the surface of the semiconductor chip at a position separate from the heat transfer surface.

Embodiments described herein include systems and methods for detecting flow of a fluid. One embodiment of a system includes a flow body, a thermal tube sensor housing, and a computing device. In some embodiments, the flow body includes an inlet for receiving the fluid and an outlet for expelling the fluid, the thermal tube sensor housing includes a sensor tube that includes a first connection portion and a second connection portion, and the sensor tube is configured with a cross position where a first portion of the sensor tube crosses paths with a second portion of the sensor tube, reducing a thermo-siphoning effect.