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:
Dec. 04, 2012
Filed:
Jan. 14, 2009
Tetsuya Shimakata, Tokyo, JP;
Koichi Kondo, Tokyo, JP;
Tetsuya Shimakata, Tokyo, JP;
Koichi Kondo, Tokyo, JP;
Azbil Corporation, Tokyo, JP;
Abstract
When the damping time constant Dτ is changed to Dτ=0, the sampling period Ts is automatically changed from 100 ms to 50 ms. The sampling time is automatically changed from 60 ms to 30 ms. Thus, when the damping time constant Dτ is changed to Dτ=0, a processing unit samples an electrical signal corresponding to the pressure difference of a fluid detected by a differential pressure sensor for the sampling time ts=30 ms in every sampling period Ts=50 ms, and finds the measurement value ΔP of the differential pressure by performing a variety of operation processing including a linearization operation and a square root operation on the sampled electrical signal. In the operation processing, the processing unit does not perform a damping operation.