Flowmeter |
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| 申请号 | JP21264988 | 申请日 | 1988-08-29 | 公开(公告)号 | JPH01206218A | 公开(公告)日 | 1989-08-18 |
| 申请人 | Thorn Emi Flow Measurement Ltd; | 发明人 | PIITAA JIEPUSON; GURAHAMU MAIKERU TOFUIIRUDO; | ||||
| 摘要 | PURPOSE: To obtain a compact flowmeter by measuring the flow rate of fluid by coupling the outputs from two out of three detection means and obtaining an error signal to be employed for recalibration of measurement by coupling the outputs from three detection means. CONSTITUTION: A flowmeter 36 provided for a bypath 33 comprises a recalibration circuit to be mounted internally or externally, a density transducer 37, a microbeam flow sensor 38, and a pure fluid flowmeter 39. The density transducer 37 is set in the dead zone of bypath 33 substantially containing a stationary fluid and surrounded by a fine filter 40 so that the surrounding fluid is kept stationary. Flow rate of the fluid is then measured by coupling the outputs from the sensor 38 and transducer 37. Furthermore, an error signal to be employed for recalibration of measurement is obtained by coupling the outputs from the flowmeter 36 additionally. COPYRIGHT: (C)1989,JPO |
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