VORTEX FLOWMETER

Japanese Patent JP3397761

B2

PROBLEM TO BE SOLVED: To provide a vortex flowmeter in which noise resistant characteristics are improved.
SOLUTION: This vortex flowmeter is equipped with a vessel, which has a cylindrical side wall and a bulkhead formed in the central part of the side wall and constitutes a terminal box chamber and an amplifier chamber, a lid which is fixed to the vessel by screwing, a terminal box part having a signal terminal part and a power source terminal part which are installed in the terminal box chamber, and an amplifier part which is installed in the amplifier chamber, has a printed board and processes an input signal and a power source input. The vortex flowmeter is characteristically provided with an external thread formed in the outer peripheral part of the vessel, a lid having an internal thread which is fitted to the external thread, a first amplifier- shielding plate formed on the printed board which covers the signal processing part of the amplifier part, and whose one end edge is in contact with the sidewall, and a second amplifier shielding plate wherein one end edge part is in contact with the other end edge part of the first amplifier-shielding plate, and the other end edge part is in contact with the bulkhead, thereby constituting a signal processing amplifier- shielding chamber together with the first amplifier shielding plate, the sidewall and the bulkhead.

Minoru Honjo
Akio Yoshino
Tadao Mikami
Masami Wada

JP2000296008A

April 21, 2003

September 28, 2000

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Yokogawa Electric Corporation

G01F1/32; (IPC1-7): G01F1/32

JP1062217A
JP1114422A
JP62117525U
JP321733U

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