A water service supply assembly includes a water supply line with a stop valve. A lid is supported relative to the stop valve. A first switch is adapted to detect movement of the lid and a second switch is adapted to detect if a body is moved relative to the stop valve.

A static gas flowmeter for sensing a flow of gas includes an outer housing, a flow tube coupled to an outlet or an inlet, ≥1 sensor positioned for sensing gas flowing through the flow tube, and a controller including a memory including a flow calibration and flow measurement algorithm coupled to a sensor receiving a sensing signal. An integrated gas valve is connected to the inlet or outlet and/or there is an additional external valve positioned outside the housing coupled to the inlet to provide the gas flowmeter at least two state operation. Using the valve(s), the flow calibration algorithm triggers a zero-flow condition, then obtains a measured gas flow, and from the measured gas flow a flow offset is determined. If the flow offset is outside a predetermined limit, in-line calibrating is performed by adding the flow offset reflected as a correction factor to the flow measurement algorithm.

A housing for a device for metered dispensing of a medium, the housing including at least one inlet, preferably threadless, configured to allow the medium to enter the housing from a reservoir, a plurality of receptacles, preferably threadless, a metering device in each of the plurality of receptacles, an inlet line connected to the at least one inlet, and a plurality of distribution lines connected to the inlet line and to each of the plurality of receptacles, wherein the housing includes a plastic material.

A flow dampener for dampening pulsation in a fluid flow includes a body shell, a flexible membrane, and two flow ports. The body shell has an interior surface and an elongate groove formed on the interior surface. The flexible membrane is sealed to the interior surface of the body shell and covers the elongate groove. In some embodiments, the flexible membrane is over-molded onto the body shell. The flexible membrane cooperates with the elongate groove to form an elongate flow path for the fluid flow. The flexible membrane has a thickness in a range from 0.5 mm to 6 mm. As the membrane is flexible, it vibrates as the fluid flows through the elongate flow path, absorbs kinetic energy in the fluid flow, and thereby dampens pulsation in the fluid flow.

A rate-of-change flow measurement device is provided including first pressure sensor, a position control valve with a valve position sensor, a second sensor position and a chamber comprising a part of the flow path of the device, and an isolation valve, arranged in this order along the flow path of the device. The device receives valve position data from the valve position sensor and pressure data from the pressure sensors, and calculates a volume of the chamber at least in part using the valve position data when a calibration of a device-under-test is performed by decreasing a pressure of the chamber or increasing the pressure of the chamber while opening the position control valve to maintain the pressure reading of the first pressure sensor constant to stay at a pressure set point.

A method and a device for supplying a measurement electronics system in a fitting, through which a fluid flows, with electrical energy, which is generated in a turbine by the fluid flowing through the filling, wherein the flow quantities and pressures vary within wide boundaries, typically 1:1000. A pressure control device associated with the turbine controls the pressure of the fluid striking the turbine in such a manner that the electrical energy required for operating the measurement electronics system is generated with a small flow quantity, the pressure loss incurred by the fluid while flowing through the fitting being limited to a maximum value.

A method and a device for supplying a measurement electronics system in a fitting, through which a fluid flows, with electrical energy, which is generated in a turbine by the fluid flowing through the filling, wherein the flow quantities and pressures vary within wide boundaries, typically 1:1000. A pressure control device associated with the turbine controls the pressure of the fluid striking the turbine in such a manner that the electrical energy required for operating the measurement electronics system is generated with a small flow quantity, the pressure loss incurred by the fluid while flowing through the fitting being limited to a maximum value.

In a flow meter with a displacement meter (1) a parallel-connected pressure difference sensor (3) has a bypass channel (8) which frees a connection between the inflow side and the outflow side (4, 5) when a piston (7) butts against a maximum stroke stop (9). In the bypass channel (8) is a check valve (11) which prevents the backflow from the outflow side to the inflow side (5, 4) and thus enables a return of the piston (7) purely due to pressure.

The present invention provides a thermal flow meter 300 which reduces a stress applied from a fixing portion 3721, which is used to hold and fix a circuit package 400 with respect to a housing 302, to the circuit package 400 and has high reliability. In the thermal flow meter of the invention, the circuit package 400 embedded with a flow rate measurement circuit is formed through a first resin molding process, the fixing portion 3721 is formed along with the housing 302 through a second resin molding process, and the circuit package 400 is enveloped by the fixing portion 3721, whereby the circuit package 400 is held by and fixed to the housing 302. In order to reduce the influence of a stress, generated based on a temperature change of the fixing portion 3721, on the circuit package 400, the fixing portion 3721 is constituted of a thick portion 4714 and a thin portion 4710. Since thickness of a resin of the thin portion 4710 is small, the stress to be generated is small, and a force applied to the circuit package 400 can be reduced.

A gas flow sensing device, and related method of manufacturing, comprising a conductive layer encapsulated in dielectric film, suspended over a cavity to form a diaphragm. The conductive layer functions as both a heating a sensing element and is patterned to provide uniform heat distribution across the diaphragm. The device is designed to sense flow from any direction relative to the device and the design of the dielectric film and diaphragm reduces sensor drift during prolonged operation.