PRESSURE DEMAND METER FOR FLUID FLOW MEASUREMENT

• US 3,653,261 A
• Filed: 03/06/1970
• Issued: 04/04/1972
• Est. Priority Date: 03/06/1970
• Status: Expired due to Term

• Current Assignee: Stephen L. Feldman
• Original Assignee: Stephen L. Feldman
• Inventors: Feldman, Stephen L.
• Primary Examiner(s): Queisser, Richard C.
• Assistant Examiner(s): Beauchamp, John P.
• Application Number:
  US05/017,073
• Time in Patent Office: 760 Days
• Field of Search: 73/198,230,233,199,194
• US Class Current: 73/233
• CPC Class Codes: G01F 15/02 Compensating or correcting for variations in pressure, density or temperature
• CPC Class Codes: G01F 3/12 Meters with nutating members, e.g. discs

Abstract

The meter includes a quantity meter, pressure measuring device and a register. The outputs of the pressure measuring device and quantity meter are correlated to provide a numerical readout at the register inversely proportional to the pressure of the fluid in the fluid line and directly proportional to the quantity of flow whereby demand on the fluid system is reflected in the quantity readout.

Claims

1. A fluid measuring device comprising:

sensing means for measuring a characteristic of fluid flow in a fluid line and providing an output signal in response thereto proportional to the rate of flow of fluid through the fluid line, means for sensing the pressure of the fluid and providing an output signal proportional to such pressure, a register and means for processing said rate of flow signal and said pressure signal to provide an indication at said register proportional to the rate of flow of fluid through the fluid line and inversely proportional to the pressure of the fluid.

2. The device according to claim 1 wherein said register includes a display registering quantity units, the increase in quantity units registered and displayed for a given increment of actual fluid flow at a first fluid pressure being greater thaN the increase in quantity units registered and displayed for a like quantity of fluid flow at a second fluid pressure higher than said first fluid pressure.

3. The device according to claim 1 wherein said register includes a display registering quantity units, the increase in quantity units registered for a given pressure at a first rate of fluid flow being greater than the increase in quantity units registered for the given pressure at a second rate of fluid flow less than said first rate of fluid flow.

4. The device according to claim 1 wherein said processing means includes means for continuously correlating said rate of flow signal and said pressure signal to provide an indication at said register continuously proportional to the rate of flow of fluid through the line and continuously inversely proportional to the pressure of the fluid in the line.

5. The device according to claim 1 wherein said processing means includes means for converting said rate of flow signal to a quantity output signal for said register proportional to the rate of flow through the line, means coupled to said output pressure signal for altering said converting means in accordance with said pressure signal to provide a quantity output signal at said register in a different proportion to the rate of flow through the line than said latter mentioned proportion.

6. The device according to claim 1 wherein said processing means includes a plurality of gears, said rate of flow output signal being adapted to drive said gears, said gears having an output coupled to said register with said register having a readout in quantity units of flow through the line, means coupled to said pressure signal output for changing the gear ratio of said gears to alter the quantity readout in an inverse proportion to the pressure in the fluid line.

7. The device according to claim 1 including a remote meter, means for coupling said remote meter to said pressure output signal for providing an indication proportional to said fluid pressure at said remote meter.

8. In a water system having a plurality of water distribution conduits, a measuring device comprising:

means for sensing the water system demand, means coupled to said sensing means to provide an output signal proportional to system demand, means for sensing the quantity of water flowing through a specified conduit for a given time period, means coupled to said latter sensing means to provide an output signal proportional to the quantity of flow through the specified conduit, and means for correlating said output signals to provide an indication proportional to the quantity of water utilized and the system demand.

9. The device according to claim 8 including a register, said indication being displayed on said register in quantity units.

10. The device according to claim 8 including a remote register, means for coupling said remote register to said device to provide a remote indication of system demand.

11. In a water system having a plurality of water distribution conduits, the method of determining user charges for water flowing through a users conduit as a function of system demand and quantity of water utilized comprising the steps of;

sensing the water system demand and providing an output signal proportional thereto;

sensing the quantity of water flowing through a users conduit for a given period of time and providing an output signal proportional thereto, correlating said output signals to provide an indication proportional to the quantity of water utilized and system demand; and

calculating a charge to a water system user based on the net change in said latter indication for the given time period.

12. In fluid system having a plurality of fluid distribution conduits, a measuring device comprising:

means for sensing the fluid system demand, means coupled to said sensing means to provide an output signal proportional to system demand, means for sensing the quantity of fluid flowing through a specified conduit fOr a given time period, means coupled to said latter sensing means to provide an output signal proportional to the quantity of flow through the specified conduit, and means for correlating said output signals to provide an indication proportional to the quantity of fluid utilized and the system demand.

13. The device according to claim 12 including a register, said indication being displayed on said register in quantity units.

14. The device according to claim 12 including a remote register, means for coupling said remote register to said device to provide a remote indication of system demand.

15. In a fluid system having a plurality of fluid distribution conduits, the method of determining user charges for fluid flowing through a users conduit as a function of system demand and quantity of fluid utilized comprising the steps of;

sensing the fluid system demand and providing an output signal proportional thereto;

sensing the quantity of fluid flowing through a users conduit for a given period of time and providing an output signal proportional thereto, correlating said output signals to provide an indication proportional to the quantity of fluid utilized and system demand; and

calculating a charge to a fluid system user based on the net change in said latter indication for the given time period.

16. The device according to claim 12 wherein said demand sensing means includes means for sensing the pressure of the fluid and providing an output signal proportional to such pressure and means for correlating said output signals to provide an indication proportional to the quantity of fluid utilized and inversely proportional to the pressure of the fluid.