公开(公告)号：US10591513B2

公开(公告)日：2020-03-17

申请号：US15315034

申请日：2015-05-27

Applicant: Endress + Hauser Flowtec AG

Inventor： Adrian Brunner ,  Matthias Brudermann ,  Christoph Werle

IPC: G01R15/18 ,  H01H47/32 ,  H01H50/18 ,  H01H50/44

Abstract: A coil arrangement has an electrical coil and an armature movable between a first and second end positions, an electronic switch switchable between at least two switch states, a control and monitoring circuit for producing a switching signal actuating the electronic switch and an operating circuit for providing an operating voltage and an electrical current measurement signal representing an electrical current flowing as a function of time in a coil electrical current circuit formed with the coil. The control and monitoring circuit is adapted to detect whether an inductance of the coil has a dependence on the switching signal as a function of time. The electromechanical has a first switch contact movable between first and second switch positions, a second switch contact and a coil arrangement of the invention, while the measurement transmitter has also a measuring circuit for receiving at least one transducer signal.

公开(公告)号：US20170199231A1

公开(公告)日：2017-07-13

申请号：US15315034

申请日：2015-05-27

Applicant: Endress + Hauser Flowtec AG

Inventor： Adrian Brunner ,  Matthias Brudermann ,  Christoph Werle

IPC: G01R15/18 ,  H01H50/18 ,  H01H50/44 ,  H01H47/32

CPC classification number: G01R15/183 ,  H01H47/001 ,  H01H47/002 ,  H01H47/32 ,  H01H47/325 ,  H01H50/18 ,  H01H50/44 ,  H01H2047/009

Abstract: A coil arrangement comprises an electrical coil and an armature movable between a first end position (I) and a second end position, an electronic switch switchable between at least two switch states, a control and monitoring circuit for producing a switching signal actuating the electronic switch and an operating circuit for providing an operating voltage and an electrical current measurement signal representing an electrical current flowing as a function of time in a coil electrical current circuit formed with the coil. The control and monitoring circuit is additionally adapted using the electrical current measurement signal to perform a checking of the coil, for example, namely to detect, whether an inductance, of the coil has a dependence on the switching signal as a function of time, respectively a behavior as a function of time corresponding with the switching signal as a function of time. The electromechanical switch, in turn, comprises a first switch contact movable between a first switch position and a second switch position, a second switch contact and, for actuating the switch contact, a coil arrangement of the invention, while the measurement transmitter comprises, besides such an electromechanical switch, also a measuring circuit for receiving at least one transducer signal dependent on a physical or chemical, measured variable and/or representing the measured variable as a function of time.