Oval Corporation

Yasuichi Shiraishi

Seiji Kobayashi

Yuichi Nakao

Yasushi Ito

Kenichi Matsuoka

Satoru Nihei

The Coriolis mass flow meter of this invention comprises two parallel curved flow tubesanda drive unitand a pair of vibration sensorsandAn inlet-side manifolddividing the flow of a fluid being measured into the two flow tubesandfrom the inlet thereof, and an outlet-side manifoldjoining the fluid flows flowing in the two flow tubesandto discharge from the fluid outlet thereof are mechanically connected to a meter bodyonly at the inlet side of the inlet-side manifoldand at the outlet side of the outlet-side manifoldrespectively. With this arrangement, the effects of vibration transmitted from the meter bodyand all structures connected thereto can be reduced at the joint parts between the inlet-side and outlet-side manifoldsandthat serve as vibration fulcrums.

Coriolis mass flowmeter

A Coriolis mass flowmeter of a type in which a fluid to be measured is caused to flow in series by forming two parallel flow tubes and which are obtained by bending one conduit. The inlet portion of conduit between an external connecting portion connected to inlet piping and the inlet of one flow tube is bent in the shape of the letter L and bent in another direction in combination, and the outlet portion of conduit between an external connecting portion connected to outlet piping and the outlet of the other flow tube is bent in the shape of the letter L symmetrically with respect to the above inlet portion of conduit and bent in another direction in combination. The external connecting portions and are arranged on the same axis. The present invention simplifies the construction of connection to external piping, simplifies the assembling of the Coriolis mass flowmeter itself, and permits a high-accuracy measurement of mass flow rate by reducing the vibrations of external piping, etc.

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Tokyo, Japan

Yasuichi Shiraishi