Measuring and testing – Volume or rate of flow – By measuring electrical or magnetic properties
Patent
1996-05-01
1997-12-02
Biegel, Ronald L.
Measuring and testing
Volume or rate of flow
By measuring electrical or magnetic properties
7386111, G01F 100
Patent
active
056938926
ABSTRACT:
An apparatus includes a conduit having a generally circular cross-section, and a liquid flow sensor extending into the conduit so that a liquid contacting portion extends generally parallel to an axis of the conduit and is positioned to extend into an interior of the conduit a first distance. An electromagnetic coil is positioned in the housing for generating a magnetic field within the liquid flow. In addition, the sensor includes a pair of spaced apart electrodes defining a second distance therebetween and being exposed on the liquid contacting portion for generating a signal related to the liquid flow rate. Moreover, the second distance is preferably greater than or equal to about two times the first distance and is greater than or equal to about one-tenth a diameter of the conduit. An open channel embodiment of the invention has a cross-section of a predetermined width and an opening in a bottom wall thereof. A liquid flow sensor is positioned in the opening in the open channel. The liquid flow sensor is as described above. In this embodiment, however, the pair of spaced apart electrodes preferably define a distance therebetween being in a range of about 0.10 to 0.95 times the predetermined width of the open channel. This relationship ensures acceptable accuracy using a relatively compact, lightweight and relatively inexpensive sensor. Method aspects of the invention are also disclosed.
REFERENCES:
patent: 3094000 (1963-06-01), Kass
patent: 3503258 (1970-03-01), Baker
patent: 3620079 (1971-11-01), Nosley
patent: 3834232 (1974-09-01), Gruner et al.
patent: 3881350 (1975-05-01), Nosley
patent: 3929016 (1975-12-01), Takeuchi et al.
patent: 4122714 (1978-10-01), Kobayashi et al.
patent: 4181018 (1980-01-01), Schmook
patent: 4261210 (1981-04-01), Gardner
patent: 4290312 (1981-09-01), Kobayashi
patent: 4409846 (1983-10-01), Ueno
patent: 4459858 (1984-07-01), Marsh
patent: 4774844 (1988-10-01), Davis
patent: 4920795 (1990-05-01), Codazzi et al.
patent: 5125276 (1992-06-01), Wada
patent: 5275059 (1994-01-01), Lew et al.
patent: 5307688 (1994-05-01), Lefebvre
patent: 5390548 (1995-02-01), Kasper et al.
patent: 5398552 (1995-03-01), Marsh
patent: 5417118 (1995-05-01), Lew et al.
patent: 5544532 (1996-08-01), Brown
patent: 5551306 (1996-09-01), Scarpa
Turbo Instruments, Inc., Publ. No. TB 2301-202/0494/E, "Insertion Magnetic Flow Sensor MIS 2", pp. 1-7.
Turbo Instruments, Inc., Publ. No. TB MG 711/E u. MG 911/E, "Magnetic Flow Sensor Type MG 711/E Type MG 911/E", pp. 1-6.
AMJ Equipment Corporation
Biegel Ronald L.
LandOfFree
Apparatus for sensing liquid flow in a conduit or open channel a does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for sensing liquid flow in a conduit or open channel a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for sensing liquid flow in a conduit or open channel a will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-803651