专利名称：Differential-pressure flow meter and flow-rate controller
发明人：Igarashi, Hiroki申请号：EP09163470.9申请日：20090623公开号：EP2144043B1公开日：20120606
摘要：A differential-pressure flow meter is capable of easily eliminating adhesion toan orifice of an extraneous material. The differential-pressure flow meter includes: a pairof pressure sensors provided on a straight pipe part of a main fluid channel; an orificeunit interposed between the pair of pressure sensors; a columnar orifice body providedon the main fluid channel to be detachable in a direction orthogonal to a flow direction ofa fluid in the main fluid channel; and an orifice hole penetrating the orifice body in theflow direction of the fluid, wherein the orifice body is rotatable at a prescribed
installation position to reverse an upstream side and a downstream side with respect tothe orifice hole, and flow rate measurement is performed by converting into a flow rate adifference in pressure that is obtained from two pressure values sensed respectively bythe pair of pressure sensors.
申请人：SURPASS IND CO LTD
地址：JP
国籍：JP
代理机构：Isarpatent
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