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G01F 1/00
|
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow |
|
G01F 1/002
|
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow wherein the flow is in an open channel |
|
G01F 1/05
|
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects |
|
G01F 1/06
|
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with tangential admission |
|
G01F 1/07
|
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with tangential admission with mechanical coupling to the indicating device |
|
G01F 1/08
|
Adjusting, correcting, or compensating means therefor |
|
G01F 1/10
|
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with axial admission |
|
G01F 1/11
|
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with axial admission with mechanical coupling to the indicating device |
|
G01F 1/12
|
Adjusting, correcting, or compensating means therefor |
|
G01F 1/20
|
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow |
|
G01F 1/22
|
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow by variable-area meters |
|
G01F 1/24
|
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow by variable-area meters with magnetic or electric coupling to the indicating device |
|
G01F 1/26
|
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow by variable-area meters of the valve type |
|
G01F 1/28
|
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow by drag-force, e.g. vane type or impact flowmeter |
|
G01F 1/30
|
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow by drag-force, e.g. vane type or impact flowmeter for fluent solid material |
|
G01F 1/32
|
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters |
|
G01F 1/34
|
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure |
|
G01F 1/36
|
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction |
|
G01F 1/37
|
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction the pressure or differential pressure being measured by means of communicating tubes or reservoirs with movable fluid levels, e.g. by U-tubes |
|
G01F 1/38
|
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction the pressure or differential pressure being measured by means of a movable element, e.g. diaphragm, piston, Bourdon tube or flexible capsule |
|
G01F 1/40
|
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction - Details of construction of the flow constriction devices |
|
G01F 1/42
|
Orifices or nozzles |
|
G01F 1/44
|
Venturi tubes |
|
G01F 1/46
|
Pitot tubes |
|
G01F 1/48
|
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by a capillary element |
|
G01F 1/50
|
Correcting or compensating means |
|
G01F 1/52
|
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring the height of the fluid level due to the lifting power of the fluid flow |
|
G01F 1/54
|
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by means of chains, flexible bands, or wires introduced into, and moved by, the flow |
|
G01F 1/56
|
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects |
|
G01F 1/58
|
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects by electromagnetic flowmeters |
|
G01F 1/60
|
Circuits therefor |
|
G01F 1/64
|
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects by measuring electrical potential generated by the fluid flow, e.g. by electrochemical, contact, or friction effects |
|
G01F 1/66
|
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters |
|
G01F 1/68
|
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects |
|
G01F 1/69
|
Structural arrangements; Mounting of elements, e.g. in relation to fluid flow using a particular type of heating, cooling or sensing element of resistive type |
|
G01F 1/72
|
Devices for measuring pulsing fluid flows |
|
G01F 1/74
|
Devices for measuring flow of a fluid or flow of a fluent solid material in suspension in another fluid |
|
G01F 1/075
|
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with tangential admission with magnetic or electromagnetic coupling to the indicating device |
|
G01F 1/76
|
Devices for measuring mass flow of a fluid or a fluent solid material |
|
G01F 1/78
|
Direct mass flowmeters |
|
G01F 1/80
|
Direct mass flowmeters operating by measuring pressure, force, momentum, or frequency of a fluid flow to which a rotational movement has been imparted |
|
G01F 1/82
|
Direct mass flowmeters operating by measuring pressure, force, momentum, or frequency of a fluid flow to which a rotational movement has been imparted 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 |
|
G01F 1/84
|
Coriolis or gyroscopic mass flowmeters |
|
G01F 1/86
|
Indirect mass flowmeters, e.g. measuring volume flow and density, temperature, or pressure |
|
G01F 1/88
|
Indirect mass flowmeters, e.g. measuring volume flow and density, temperature, or pressure with differential-pressure measurement to determine the volume flow |
|
G01F 1/90
|
Indirect mass flowmeters, e.g. measuring volume flow and density, temperature, or pressure with positive-displacement meter or turbine meter to determine the volume flow |
|
G01F 1/115
|
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with axial admission with magnetic or electromagnetic coupling to the indicating device |
|
G01F 1/325
|
Means for detecting quantities used as proxy variables for swirl |
|
G01F 1/661
|
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters using light |
|
G01F 1/663
|
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters by measuring Doppler frequency shift |
|
G01F 1/667
|
Arrangements of transducers for ultrasonic flowmeters; Circuits for operating ultrasonic flowmeters |
|
G01F 1/684
|
Structural arrangements; Mounting of elements, e.g. in relation to fluid flow |
|
G01F 1/688
|
Structural arrangements; Mounting of elements, e.g. in relation to fluid flow using a particular type of heating, cooling or sensing element |
|
G01F 1/692
|
Thin-film arrangements |
|
G01F 1/696
|
Circuits therefor, e.g. constant-current flow meters |
|
G01F 1/698
|
Feedback or rebalancing circuits, e.g. self heated constant temperature flowmeters |
|
G01F 1/699
|
Feedback or rebalancing circuits, e.g. self heated constant temperature flowmeters by control of a separate heating or cooling element |
|
G01F 1/704
|
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow using marked regions or existing inhomogeneities within the fluid stream, e.g. statistically occurring variations in a fluid parameter |
|
G01F 1/708
|
Measuring the time taken to traverse a fixed distance |
|
G01F 1/712
|
Measuring the time taken to traverse a fixed distance using auto-correlation or cross-correlation detection means |
|
G01F 1/716
|
Measuring the time taken to traverse a fixed distance using electron paramagnetic resonance (EPR) or nuclear magnetic resonance (NMR) |
|
G01F 1/7082
|
Measuring the time taken to traverse a fixed distance using acoustic detecting arrangements |
|
G01F 1/7084
|
Measuring the time taken to traverse a fixed distance using thermal detecting arrangements |
|
G01F 1/7086
|
Measuring the time taken to traverse a fixed distance using optical detecting arrangements |
|
G01F 1/7088
|
Measuring the time taken to traverse a fixed distance using electrically charged particles as tracers |
|
G01F 3/00
|
Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow |
|
G01F 3/02
|
Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement |
|
G01F 3/04
|
Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement having rigid movable walls |
|
G01F 3/06
|
Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement having rigid movable walls comprising members rotating in a fluid-tight or substantially fluid-tight manner in a housing |
|
G01F 3/08
|
Rotary-piston or ring-piston meters |
|
G01F 3/10
|
Geared or lobed impeller meters |
|
G01F 3/12
|
Meters with nutating members, e.g. discs |
|
G01F 3/14
|
Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement having rigid movable walls comprising reciprocating pistons, e.g. reciprocating in a rotating body |
|
G01F 3/16
|
Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement having rigid movable walls comprising reciprocating pistons, e.g. reciprocating in a rotating body in stationary cylinders |
|
G01F 3/18
|
Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement having rigid movable walls comprising reciprocating pistons, e.g. reciprocating in a rotating body in stationary cylinders involving two or more cylinders |
|
G01F 3/20
|
Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement having flexible movable walls, e.g. diaphragms, bellows |
|
G01F 3/22
|
Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement having flexible movable walls, e.g. diaphragms, bellows for gases |
|
G01F 3/24
|
Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers moved during operation |
|
G01F 3/26
|
Tilting-trap meters |
|
G01F 3/28
|
Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers moved during operation on carriers rotated by the weight of the liquid in the measuring chambers |
|
G01F 3/30
|
Wet gas-meters |
|
G01F 3/32
|
Wet gas-meters comprising partitioned drums rotating or nutating in a liquid |
|
G01F 3/34
|
Wet gas-meters comprising bells reciprocating in a liquid |
|
G01F 3/36
|
Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with stationary measuring chambers having constant volume during measurement |
|
G01F 3/38
|
Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with stationary measuring chambers having constant volume during measurement having only one measuring chamber |
|
G01F 5/00
|
Measuring a proportion of the volume flow |
|
G01F 7/00
|
Volume-flow measuring devices with two or more measuring ranges; Compound meters |
|
G01F 9/00
|
Measuring volume flow relative to another variable, e.g. of liquid fuel for an engine |
|
G01F 9/02
|
Measuring volume flow relative to another variable, e.g. of liquid fuel for an engine wherein the other variable is the speed of a vehicle |
|
G01F 11/00
|
Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it |
|
G01F 11/02
|
Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement |
|
G01F 11/04
|
Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement of the free-piston type |
|
G01F 11/06
|
Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement of the free-piston type with provision for varying the stroke of the piston |
|
G01F 11/08
|
Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement of the diaphragm or bellows type |
|
G01F 11/10
|
Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation |
|
G01F 11/12
|
Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements |
|
G01F 11/14
|
Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements wherein the measuring chamber reciprocates |
|
G01F 11/16
|
Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements wherein the measuring chamber reciprocates for liquid or semiliquid |
|
G01F 11/18
|
Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements wherein the measuring chamber reciprocates for fluent solid material |
|
G01F 11/20
|
Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements wherein the measuring chamber rotates or oscillates |
|
G01F 11/22
|
Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements wherein the measuring chamber rotates or oscillates for liquid or semiliquid |
|
G01F 11/24
|
Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements wherein the measuring chamber rotates or oscillates for fluent solid material |
|
G01F 11/26
|
Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation wherein the measuring chamber is filled and emptied by tilting or inverting the supply vessel, e.g. bottle-emptying apparatus |
|
G01F 11/28
|
Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement |
|
G01F 11/30
|
Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement with supply and discharge valves of the lift or plug-lift type |
|
G01F 11/32
|
Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement with supply and discharge valves of the lift or plug-lift type for liquid or semiliquid |
|
G01F 11/34
|
Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement with supply and discharge valves of the lift or plug-lift type for fluent solid material |
|
G01F 11/36
|
Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement with supply or discharge valves of the rectilinearly-moved slide type |
|
G01F 11/38
|
Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement with supply or discharge valves of the rectilinearly-moved slide type for liquid or semiliquid |
|
G01F 11/40
|
Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement with supply or discharge valves of the rectilinearly-moved slide type for fluent or solid material |
|
G01F 11/42
|
Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement with supply or discharge valves of the rotary or oscillatory type |
|
G01F 11/44
|
Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement with supply or discharge valves of the rotary or oscillatory type for liquid or semiliquid |
|
G01F 11/46
|
Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement with supply or discharge valves of the rotary or oscillatory type for fluent solid material |
|
G01F 13/00
|
Apparatus for measuring by volume and delivering fluids or fluent solid materials, not provided for in the preceding groups |
|
G01F 15/00
|
MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME - Details of, or accessories for, apparatus of groups insofar as such details or appliances are not adapted to particular types of such apparatus |
|
G01F 15/02
|
Compensating or correcting for variations in pressure, density, or temperature |
|
G01F 15/04
|
Compensating or correcting for variations in pressure, density, or temperature of gases to be measured |
|
G01F 15/06
|
Indicating or recording devices |
|
G01F 15/07
|
Integration to give total flow, e.g. using mechanically-operated integrating mechanism |
|
G01F 15/08
|
Air or gas separators in combination with liquid meters; Liquid separators in combination with gas-meters |
|
G01F 15/10
|
Preventing damage by freezing or excess pressure or insufficient pressure |
|
G01F 15/12
|
Cleaning arrangements; Filters |
|
G01F 15/14
|
Casings, e.g. of special material |
|
G01F 15/16
|
Diaphragms; Bellows; Mountings therefor |
|
G01F 15/18
|
Supports or connecting means for meters |
|
G01F 15/061
|
Indicating or recording devices for remote indication |
|
G01F 15/063
|
Indicating or recording devices for remote indication using electrical means |
|
G01F 15/075
|
Integration to give total flow, e.g. using mechanically-operated integrating mechanism using electrically-operated integrating means |
|
G01F 17/00
|
Methods or apparatus for determining the capacity of containers or cavities, or the volume of solid bodies |
|
G01F 19/00
|
Calibrated capacity measures for fluids or fluent solid material, e.g. measuring cups |
|
G01F 22/00
|
Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for |
|
G01F 22/02
|
Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for involving measurement of pressure |
|
G01F 23/00
|
Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm |
|
G01F 23/02
|
Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by gauge glasses or other apparatus involving a window or transparent tube for directly observing the level to be measured or the level of a liquid column in free communication with the main body of the liquid |
|
G01F 23/04
|
Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by dip members, e.g. dip-sticks |
|
G01F 23/14
|
Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure |
|
G01F 23/16
|
Indicating, recording, or alarm devices being actuated by mechanical or fluid means, e.g. using gas, mercury, or a diaphragm as transmitting element, or by a column of liquid |
|
G01F 23/18
|
Indicating, recording, or alarm devices actuated electrically |
|
G01F 23/20
|
Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of weight, e.g. to determine the level of stored liquefied gas |
|
G01F 23/22
|
Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water |
|
G01F 23/24
|
Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid |
|
G01F 23/26
|
Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields |
|
G01F 23/28
|
Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material |
|
G01F 23/30
|
Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats |
|
G01F 23/32
|
Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using rotatable arms or other pivotable transmission elements |
|
G01F 23/34
|
Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using rotatable arms or other pivotable transmission elements using mechanically actuated indicating means |
|
G01F 23/36
|
Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using rotatable arms or other pivotable transmission elements using electrically actuated indicating means |
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G01F 23/38
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Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using rotatable arms or other pivotable transmission elements using magnetically actuated indicating means |
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G01F 23/40
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Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using bands or wires as transmission elements |
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G01F 23/42
|
Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using bands or wires as transmission elements using mechanically actuated indicating means |
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G01F 23/44
|
Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using bands or wires as transmission elements using electrically actuated indicating means |
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G01F 23/46
|
Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using bands or wires as transmission elements using magnetically actuated indicating means |
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G01F 23/48
|
Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using twisted spindles as transmission elements |
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G01F 23/50
|
Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using twisted spindles as transmission elements using mechanically actuated indicating means |
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G01F 23/52
|
Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using twisted spindles as transmission elements using electrically actuated indicating means |
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G01F 23/54
|
Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using twisted spindles as transmission elements using magnetically actuated indicating means |
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G01F 23/56
|
Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using elements rigidly fixed to, and rectilinearly moving with, the floats as transmission elements |
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G01F 23/58
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Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using elements rigidly fixed to, and rectilinearly moving with, the floats as transmission elements using mechanically actuated indicating means |
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G01F 23/60
|
Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using elements rigidly fixed to, and rectilinearly moving with, the floats as transmission elements using electrically actuated indicating means |
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G01F 23/62
|
Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using elements rigidly fixed to, and rectilinearly moving with, the floats as transmission elements using magnetically actuated indicating means |
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G01F 23/64
|
Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type |
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G01F 23/66
|
Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type using mechanically actuated indicating means |
|
G01F 23/68
|
Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type using electrically actuated indicating means |
|
G01F 23/70
|
Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type using electrically actuated indicating means for sensing changes in level only at discrete points |
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G01F 23/72
|
Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type using magnetically actuated indicating means |
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G01F 23/74
|
Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type using magnetically actuated indicating means for sensing changes in level only at discrete points |
|
G01F 23/76
|
Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats characterised by the construction of the float |
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G01F 23/80
|
Arrangements for signal processing |
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G01F 23/263
|
Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors |
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G01F 23/284
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Electromagnetic waves |
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G01F 23/288
|
X-rays; Gamma rays |
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G01F 23/292
|
Light |
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G01F 23/296
|
Acoustic waves |
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G01F 23/2962
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Measuring transit time of reflected waves |
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G01F 23/2965
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Measuring attenuation of transmitted waves |
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G01F 25/00
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Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume |
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G01F 25/10
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Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters |
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G01F 25/17
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Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters using calibrated reservoirs |
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G01F 25/20
|
Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of apparatus for measuring liquid level |
