| 摘要 |
PROBLEM TO BE SOLVED: To provide an impeller type flow meter in which replacement of only a sensor part is allowed, and preferably, the position of an indicator with respect to a housing may be changed or fixed. SOLUTION: The housing 4 includes a flow passage 26 where an impeller 5 is rotatably held and a sensor attachment hole 38 in the vicinity of an outer circumferential part of the impeller 5 and not communicating with the flow passage 26. A sensor holder 6 having the sensor 9 detecting the rotation of the impeller 5 is detachably fitted into the sensor attachment hole 38. An outer surface of a base end part 39 of the sensor holder 6 is formed on a circumferential surface. An indicator 3 is held by the base end part 39 of the sensor holder 6 so as to be rotatable around the circumferential surface. The indicator 3 calculates and indicates a flow rate on the basis of a detection signal from the sensor 9. The indicator 3 is positioned with respect to the housing 4 by inserting a fixing screw 70 with hexagon socket. COPYRIGHT: (C)2008,JPO&INPIT
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