(0)G01F:0/2:
IPC6
SECTION G - PHYSICS
MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL;...
G01F
1/3
<<   >>   G01F001/00 - G01F001/90  

G 01 F

 MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME (milk flow sensing devices in milking machines or devices A 01 J 5/01; measuring or recording blood flow A 61 B 5/02, A 61 B 8/06; metering media to the human body A 61 M 5/168; burettes or pipettes B 01 L 3/02; arrangements of liquid volume meters or volume-flow meters in liquid-delivering apparatus, e.g. for retail sale purposes, B 67 D 5/16; pumps, fluid motors, details common to measuring or metering devices and pumps or fluid motors F 01 to F 04; locating, determining distance or velocity using reflection or reradiation of radio waves, analogous arrangements using other waves G 01 S; systems for ratio control G 05 D 11/00) [2,5]
 

Note
 

Attention is drawn to the Notes following the title of class G 01.

 

 

 

Measuring volume flow
 

 1
/ 00 Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow (measuring a proportion of the volume flow G 01 F 5/00; measuring speed of flow G 01 P 5/00; indicating presence or absence of flow G 01 P 13/00; regulating quantity or ratio G 05 D)  [2]

Note
 

Groups G 01 F 1/704 to G 01 F 1/76 take precedence over groups G 01 F 1/05 to G 01 F 1/68. [2]

1
/ 05 • by using mechanical effects  [2]  

1
/ 06 • • using rotating vanes with tangential admission [2]  

1
/ 07 • • • with mechanical coupling to the indicating device [2]  

1
/ 075 • • • with magnetic or electromagnetic coupling to the indicating device  [2]  

1
/ 08 • • • Adjusting, correcting, or compensating means therefor [2]  

1
/ 10 • • using rotating vanes with axial admission  [2]  

1
/ 11 • • • with mechanical coupling to the indicating device [2]  

1
/ 115 • • • with magnetic or electromagnetic coupling to the indicating device  [2]  

1
/ 12 • • • Adjusting, correcting, or compensating means therefor  

1
/ 20 • • by detection of dynamic effects of the fluid flow [2]  

1
/ 22 • • • by variable-area meters [2]  

1
/ 24 • • • • with magnetic or electric coupling to the indicating device  [2]  

1
/ 26 • • • • of the valve type  [2]  

1
/ 28 • • • by drag-force, e.g. vane type or impact flowmeter [2]  

1
/ 30 • • • • for fluent solid material  [2]  

1
/ 32 • • • by swirl flowmeter, e.g. using Karman vortices [2]  

1
/ 34 • • by measuring pressure or differential pressure [2]  

1
/ 36 • • • the pressure or differential pressure being created by the use of flow constriction  [2]  

1
/ 37 • • • • the pressure or differential pressure being measured by means of communicating tubes or reservoirs with movable fluid levels, e.g. by U-tubes  [2]  

1
/ 38 • • • • the pressure or differential pressure being measured by means of a movable element, e.g. diaphragm, piston, Bourdon tube or flexible capsule  [2]  

1
/ 40 • • • • Details of construction of the flow constriction devices  [2]  

1
/ 42 • • • • • Orifices or nozzles  [2]  

1
/ 44 • • • • • Venturi tubes  [2]  

1
/ 46 • • • • • Pitot tubes (specially adapted for measuring speed of fluids G 01 P 5/165) [2]  

1
/ 48 • • • the pressure or differential pressure being created by a capillary element  [2]  

1
/ 50 • • • Correcting or compensating means  [2]  

1
/ 52 • • by measuring the height of the fluid level due to the lifting power of the fluid flow  [2]  

1
/ 54 • • by means of chains, flexible bands, or wires introduced into, and moved by, the flow [2]  

1
/ 56 • by using electric or magnetic effects (G 01 F 1/66 takes precedence)  [2]  

1
/ 58 • • by electromagnetic flowmeters  [2]  

1
/ 60 • • • Circuits therefor  [2]  

1
/ 64 • • by measuring electrical currents passing through the fluid flow; by measuring electrical potential generated by the fluid flow, e.g. by electrochemical, contact, or friction effects (G 01 F 1/58 takes precedence)  [2]  

1
/ 66 • by measuring frequency, phase shift, or propagation time of electromagnetic or other waves, e.g. ultrasonic flowmeters  [2]  

1
/ 68 • by using thermal effects  [2]  

1
/ 684 • • Structural arrangements; Mounting of elements, e.g. in relation to fluid flow [6]  

1
/ 688 • • • using a particular type of heating, cooling or sensing element [6]  

1
/ 69 • • • • of resistive type [6]  

1
/ 692 • • • • • Thin-film arrangements [6]  

1
/ 696 • • Circuits therefor, e.g. constant-current flow meters [6]  

1
/ 698 • • • Feedback or rebalancing circuits, e.g. self heated constant temperature flowmeters [6]  

1
/ 699 • • • • by control of a separate heating or cooling element [6]  

1
/ 704 • using marked regions or existing inhomogeneities within the fluid stream, e.g. statistically occurring variations in a fluid parameter (G 01 F 1/76, G 01 F 25/00 take precedence) [4]  

1
/ 708 • • Measuring the time taken to traverse a fixed distance [4]  

1
/ 712 • • • using auto-correlation or cross-correlation detection means (measuring speed by using correlation detection means in general G 01 P 3/80, G 01 P 5/22) [4]  

1
/ 716 • • • using electron paramagnetic resonance (EPR) or nuclear magnetic resonance (NMR) [4]  

1
/ 72 • Devices for measuring pulsing fluid flows  [2]  

1
/ 74 • Devices for measuring flow of a fluid or flow of a fluent solid material in suspension in another fluid [2]  

1
/ 76 • Devices for measuring mass flow of a fluid or a fluent solid material (weighing a continuous stream of material during flow G 01 G 11/00)  [2]  

1
/ 78 • • Direct mass flowmeters [2]  

1
/ 80 • • • operating by measuring pressure, force, momentum, or frequency of a fluid flow to which a rotational movement has been imparted  [2]  

1
/ 82 • • • • using a driven wheel as impeller and one or more other wheels or moving elements which are angularly restrained by a resilient member, e.g. spring member, as the measuring device  [2]  

1
/ 84 • • • • Gyroscopic mass flowmeters  [2]  

1
/ 86 • • Indirect mass flowmeters, e.g. measuring volume flow and density, temperature, or pressure [2]  

1
/ 88 • • • with differential-pressure measurement to determine the volume flow  [2]  

1
/ 90 • • • with positive-displacement meter or turbine meter to determine the volume flow  [2]  
<< >>
1 1 3