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A sensor for magnetic-inductive flowmeters in defined by a sensing tube (3) disposed in a steel housing (1) and fitted with sensing electrodes (5). Two opposing magnetic coils (6) are mounted to the exterior of the tube. The coils (6) have a bolt-shaped core (7) which have saddle-shaped bases that e

A sensor for magnetic-inductive flowmeters in defined by a sensing tube (3) disposed in a steel housing (1) and fitted with sensing electrodes (5). Two opposing magnetic coils (6) are mounted to the exterior of the tube. The coils (6) have a bolt-shaped core (7) which have saddle-shaped bases that engage the outer wall of sensing tube (3). A simplified mounting of magnetic coils (6) in steel housing (1) is achieved with flange-like webs (12) mounted adjacent an upper end (11) of coil core (7). The webs are positioned within steel housing (1) by support surfaces (29). A winding bobbin (14) is constructed of two semi-cylindrical halves (15,16) which are disposed about coil core (7) and are locked to each other with a spring catch (22). The coil wire (17) is wound about the bobbin (14) secured to core (7).

대표청구항 ▼

A flow sensor for magnetic-inductive flowmeters comprising a housing including a first bore extending therethrough, a sensing tube disposed within the housing and extending through the first bore, sensing electrodes mounted to the tube, first and second electromagnetic coils mounted to the housing,

A flow sensor for magnetic-inductive flowmeters comprising a housing including a first bore extending therethrough, a sensing tube disposed within the housing and extending through the first bore, sensing electrodes mounted to the tube, first and second electromagnetic coils mounted to the housing, each having a core including first and second flanges proximate respective ends of the core, one of the core ends being affixed to the housing and the other one of the core ends being in contact with the sensing tube, a bobbin for each coil constructed of a dielectric material defined by first and second, generally semi-cylindrical bobbin segments shaped so that the segments can be placed about an intermediate portion of the core located between the flanges, and a conductor wire wrapped about the semi-cylindrical bobbin segments.