| 摘要 |
An ultrasound flow meter housing including a first housing part with a first channel for fluid flow, and a first through-going opening to the first channel. A second housing part has a second channel for fluid flow, and a second through-going opening to the second channel. The first and second through-going openings are arranged for mounting of respective first and second ultrasound transducers. A measurement channel includes at least parts of the first and second channels, and the first and second housing parts are interconnected by at least one watertight passage, e.g. such as at least one gastight passage. This watertight passage can be formed by welding, soldering or gluing. Especially, the first and second housing parts may be concentric monolithic metal parts formed by a turning process, and the at least one watertight passages are concentric welding seams. The first and second housing parts can be directly interconnected by a single watertight passage, or they may be interconnected via one or more intermediate channel forming elements using two or more watertight passages. Flange parts for forming inlet and outlet of the flow meter may be monolithically formed with the housing parts, or interconnected with the housing parts via a channel forming element using one or more watertight passages. Especially embodiments with concentric housing parts are suitable for low cost manufacturing, e.g. automatic welding robots may be used, and still the flow meter housings can be suited for high pressure applications.
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