The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 09, 2018
Filed:
Jul. 21, 2016
Azbil Corporation, Chiyoda-ku, JP;
Osamu Momose, Chiyoda-ku, JP;
AZBIL CORPORATION, Chiyoda-ku, JP;
Abstract
An input circuit includes a rectifier circuit that rectifies an excitation current obtained from a converter, and a constant voltage circuit that receives output of the rectifier circuit and performs control so that a power supply voltage is maintained constant. A power supply voltage source switching unit switches the source of a power supply voltage used in a calibrator to the constant voltage circuit when the converter is a converter of a four-wire electromagnetic flowmeter, and switches the source of the power supply voltage to a battery when the converter is a converter of a two-wire electromagnetic flowmeter. A remaining capacity indicator provides a remaining battery capacity indication in accordance with the voltage of the battery. When the converter is a converter of a four-wire electromagnetic flowmeter and it is determined that the battery is not in a battery holder, the remaining capacity indicator stops providing a remaining battery capacity.