| 摘要 |
An ultrasound flow meter capsule arranged for use with an associated base part 1 with fittings for connections to inlet and outlet pipes. The capsule includes a housing 2. A measuring tube 3 is arranged inside the housing for flow of fluid. Two ultrasound transducers 12, 13 are arranged in relation to the measuring tube 3 to transmit and receive an ultrasound signal through the fluid in the measuring tube 3. A monolithic pressure carrying part is arranged outside the measuring tube 3, and the ultrasound transducers 12, 13 are arranged outside this monolithic pressure carrying part. The pressure carrying part is preferably integrated with the housing 2, thus forming one single pressure carrying housing 2, e.g. formed by injection moulding of polymeric material. The pressure carrying housing 2 is then arranged for fitting together with a measuring tube element 3 that can also be an injection moulded polymeric element. The flow preferably flows in one single direction in the measuring tube 3. The ultrasound transducers can both be placed on sides of the measuring tube, or one 12 on the side and one 13 on the end of the measuring tube 3. The housing preferably accommodates a display element 16, electronic circuits on a PCB 15, and batteries 14.
|
