IPC 7 English version G01F 5/00-G01F 25/00

IPC ⁷ English version

G01F - G01F 3/38

G01F00500-G01F02500

SECTION G – PHYSICS

G 01

MEASURING (counting G06M); TESTING

G 01 F

MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME (milk flow sensing devices in milking machines or devices A01J 5/01; measuring or recording blood flow A61B 5/02, A61B 8/06; metering media to the human body A61M 5/168; burettes or pipettes B01L 3/02; arrangements of liquid volume meters or volume-flow meters in liquid-delivering apparatus, e.g. for retail sale purposes, B67D 5/16; pumps, fluid motors, details common to measuring or metering devices and pumps or fluid motors F01 to F04; locating, determining distance or velocity using reflection or reradiation of radio waves, analogous arrangements using other waves G01S; systems for ratio control G05D 11/00) [2,5]

Measuring a proportion of the volume flow

Volume-flow measuring devices with two or more measuring ranges; Compound meters

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

Metering by volume

11/

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

11/

with measuring chambers which expand or contract during measurement

11/

of the free-piston type

11/

with provision for varying the stroke of the piston

11/

of the diaphragm or bellows type (diaphragms or bellows therefor G01F 15/16)

11/

with measuring chambers moved during operation

11/

of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements (involving the tilting or inverting of the supply vessel G01F 11/26)

11/

wherein the measuring chamber reciprocates

11/

for liquid or semiliquid

11/

for fluent solid material

11/

wherein the measuring chamber rotates or oscillates

11/

for liquid or semiliquid

11/

for fluent solid material

11/

wherein the measuring chamber is filled and emptied by tilting or inverting the supply vessel, e.g. bottle-emptying apparatus

11/

with stationary measuring chambers having constant volume during measurement (with measuring chambers which expand or contract during measurement G01F 11/02)

11/

with supply and discharge valves of the lift or plug-lift type

11/

for liquid or semiliquid

11/

for fluent solid material

11/

with supply or discharge valves of the rectilinearly-moved slide type

11/

for liquid or semiliquid

11/

for fluent or solid material

11/

with supply or discharge valves of the rotary or oscillatory type

11/

for liquid or semiliquid

11/

for fluent solid material

13/

Apparatus for measuring by volume and delivering fluids or fluent solid materials, not provided for in the preceding groups

15/

Details of, or accessories for, apparatus of the preceding groups insofar as such details or appliances are not adapted to particular types of such apparatus

15/

Compensating or correcting for variations in pressure, density, or temperature

15/

of gases to be measured

15/

Indicating or recording devices, e.g. for remote indication

15/

Integration to give total flow, e.g. using mechanically-operated integrating mechanism [2]

15/

075

using electrically-operated integrating means [2]

15/

Air or gas separators in combination with liquid meters; Liquid separators in combination with gas-meters

15/

Preventing damage by freezing or excess pressure or insufficient pressure

15/

Cleaning arrangements; Filters (filters in general B01D)

15/

Casings, e.g. of special material

15/

Diaphragms; Bellows; Mountings therefor

15/

Supports or connecting means for meters

Measuring volume

17/

Methods or apparatus for determining the capacity of containers or cavities, or the volume of solid bodies (measuring linear dimensions to determine volume G01B)

19/

Calibrated capacity measures for fluids or fluent solid material, e.g. measuring cups

22/

Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for [5]

22/

involving measurement of pressure [5]

Level indicators

23/

Indicating or measuring liquid level, or level of fluent solid material, e.g. indicating in terms of volume, indicating by means of an alarm (in wells E21B 47/04; adaptation to, or mounting on, steam boilers F22B 37/78; level regulation G05D; alarm devices G08B)

23/

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

23/

by dip members, e.g. dip-sticks

23/

by measurement of pressure (measuring pressure in general G01L)

23/

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

23/

Indicating, recording, or alarm devices actuated electrically

23/

by measurement of weight, e.g. to determine the level of stored liquefied gas (weighing in general G01G)

23/

by measurement of 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 (involving the use of floats G01F 23/30)

23/

by measuring variations of resistance of resistors due to contact with conductor fluid

23/

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

23/

by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material [6]

23/

284

Electromagnetic waves [6]

23/

288

X-rays; Gamma rays [6]

23/

292

Light [6]

23/

296

Acoustic waves [6]

23/

by floats (switches operated by floats H01H 35/18) [4]

23/

using rotatable arms or other pivotable transmission elements [4]

23/

using mechanically actuated indicating means [4]

23/

using electrically actuated indicating means [4]

23/

using magnetically actuated indicating means [4]

23/

using bands or wires as transmission elements [4]

23/

using mechanically actuated indicating means [4]

23/

using electrically actuated indicating means [4]

23/

using magnetically actuated indicating means [4]

23/

using twisted spindles as transmission elements [4]

23/

using mechanically actuated indicating means [4]

23/

using electrically actuated indicating means [4]

23/

using magnetically actuated indicating means [4]

23/

using elements rigidly fixed to, and rectilinearly moving with, the floats as transmission elements [4]

23/

using mechanically actuated indicating means [4]

23/

using electrically actuated indicating means [4]

23/

using magnetically actuated indicating means [4]

23/

of the free float type [4]

23/

using mechanically actuated indicating means [4]

23/

using electrically actuated indicating means [4]

23/

for sensing changes in level only at discrete points [4]

23/

using magnetically actuated indicating means [4]

23/

for sensing changes in level only at discrete points [4]

23/

characterised by the construction of the float [4]

25/

Testing or calibrating of apparatus for measuring volume, volume flow, or liquid level, or for metering by volume

G01F - G01F 3/38