Converter pulse width shaping circuit and excessive vortex...

Details Converter pulse width shaping circuit and excessive vortex... Converter pulse width shaping circuit and excessive vortex...

2011-05-24

2011-05-24

Johnson, Ryan (Department: 2817)

Measuring and testing

Volume or rate of flow

By measuring vibrations or acoustic energy

Reexamination Certificate

active

07946185

ABSTRACT:
A converter pulse width shaping circuit (6) according to the present invention is provided between a waveform shaping apparatus (4) and an erroneous output preventing apparatus (5) that are provided between a flow rate detecting portion (1) and a flow rate metering mechanism (3). When high frequency pulse signals of a frequency not lower than a predetermined value are successively input, the converter pulse width shaping circuit (6) combines those high frequency pulse signals to convert them to a low frequency pulse signal, which is then output to the erroneous output preventing apparatus (5) having a low-cut function. In the present invention, a vortex flow meter is made up of a converter (2) including the converter pulse width shaping circuit (6) described above.

REFERENCES:
patent: 4838078 (1989-06-01), Tsutsumi
patent: 4934194 (1990-06-01), Itoh et al.
patent: 6480812 (2002-11-01), Wada et al.
patent: 53-14199 (1978-02-01), None
patent: 63081213 (1988-04-01), None
patent: 63-31725 (1988-06-01), None
patent: 7-55518 (1995-03-01), None
patent: 3144152 (2001-01-01), None
patent: 3564111 (2004-06-01), None
International Search Report mailed May 22, 2007 for International Application No. PCT/JP2007/057323.

Affiliated with

Also associated with

Rating

Converter pulse width shaping circuit and excessive vortex... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Converter pulse width shaping circuit and excessive vortex..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Converter pulse width shaping circuit and excessive vortex... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2692428