G
SECTION G — PHYSICS
  
INSTRUMENTS
 G01
MEASURING (counting G06M); TESTING
 G01F
MEASURING VOLUME, VOLUME FLOW, OR LIQUID LEVEL; METERING BY VOLUME (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-F04)
 G01F

Note(s)

Attention is drawn to the notes immediately following the class title (G01).

 G01F 1/00 - 
G01F 9/00
Measuring volume flow
 G01F 1/00
Measuring the volume 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 G01F 5/00; measuring speed of flow G01P 5/00; indicating presence or absence of flow G01P 13/00; regulating quantity or ratio G05D)
 G01F 1/02
·  Integration to give total flow, e.g. using mechanically-operated integrating mechanism
 G01F 1/04
·  ·  using electrically-operated integrating means
 G01F 1/06
·  by rotating vanes, e.g. with tangential admission
 G01F 1/08
·  ·  Adjusting, correcting, or compensating means therefor (for vanes with axial admission G01F 1/12)
 G01F 1/10
·  ·  with axial admission
 G01F 1/12
·  ·  ·  Adjusting, correcting, or compensating means therefor
 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 (measuring a proportion of the volume flow G01F 5/00)
 G01F 3/02
·  with measuring chambers which expand or contract during measurement
 G01F 3/04
·  ·  having rigid movable walls
 G01F 3/06
·  ·  ·  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
·  ·  ·  comprising reciprocating pistons, e.g. reciprocating in a rotating body
 G01F 3/16
·  ·  ·  ·  in stationary cylinders
 G01F 3/18
·  ·  ·  ·  ·  involving two or more cylinders
 G01F 3/20
·  ·  having flexible movable walls, e.g. diaphragms, bellows (diaphragms and bellows therefor G01F 15/16)
 G01F 3/22
·  ·  ·  for gases
 G01F 3/24
·  with measuring chambers moved during operation (wet gas-meters G01F 3/30)
 G01F 3/26
·  ·  Tilting-trap meters
 G01F 3/28
·  ·  on carriers rotated by the weight of the liquid in the measuring chambers
 G01F 3/30
·  Wet gas-meters
 G01F 3/32
·  ·  comprising partitioned drums rotating or nutating in a liquid
 G01F 3/34
·  ·  comprising bells reciprocating in a liquid
 G01F 3/36
·  with stationary measuring chambers having constant volume during measurement (with measuring chambers which expand or contract during measurement G01F 3/02)
 G01F 3/38
·  ·  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
·  wherein the other variable is the speed of a vehicle
 G01F 11/00 - 
G01F 13/00
Metering by volume
 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
·  with measuring chambers which expand or contract during measurement
 G01F 11/04
·  ·  of the free-piston type
 G01F 11/06
·  ·  ·  with provision for varying the stroke of the piston
 G01F 11/08
·  ·  of the diaphragm or bellows type (diaphragms or bellows therefor G01F 15/16)
 G01F 11/10
·  with measuring chambers moved during operation
 G01F 11/12
·  ·  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)
 G01F 11/14
·  ·  ·  wherein the measuring chamber reciprocates
 G01F 11/16
·  ·  ·  ·  for liquid or semiliquid
 G01F 11/18
·  ·  ·  ·  for fluent solid material
 G01F 11/20
·  ·  ·  wherein the measuring chamber rotates or oscillates
 G01F 11/22
·  ·  ·  ·  for liquid or semiliquid
 G01F 11/24
·  ·  ·  ·  for fluent solid material
 G01F 11/26
·  ·  wherein the measuring chamber is filled and emptied by tilting or inverting the supply vessel, e.g. bottle-emptying apparatus
 G01F 11/28
·  with stationary measuring chambers having constant volume during measurement (with measuring chambers which expand or contract during measurement G01F 11/02)
 G01F 11/30
·  ·  with supply and discharge valves of the lift or plug-lift type
 G01F 11/32
·  ·  ·  for liquid or semiliquid
 G01F 11/34
·  ·  ·  for fluent solid material
 G01F 11/36
·  ·  with supply and discharge valves of the rectilinearly-moved slide type
 G01F 11/38
·  ·  ·  for liquid or semiliquid
 G01F 11/40
·  ·  ·  for fluent or solid material
 G01F 11/42
·  ·  with supply and discharge valves of the rotary or oscillatory type
 G01F 11/44
·  ·  ·  for liquid or semiliquid
 G01F 11/46
·  ·  ·  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
Details of, or accessories for, apparatus of the preceding groups in so far 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
·  ·  of gases to be measured
 G01F 15/06
·  Indicating or recording devices, e.g. for remote indication (indicating or recording in general G01D)
 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 (filters in general B01D)
 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 17/00 - 
G01F 19/00
Measuring volume
 G01F 17/00
Determining the capacity of containers or cavities; Determining the volume of solid bodies (measuring linear dimensions to determine volume G01B)
 G01F 19/00
Measures of capacity, e.g. measuring-cups (in German "Messbecher")
 G01F 23/00
Level indicators
 G01F 23/00
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 F 22 F 1/00; indicating and recording in general G01D; level regulation G05D; alarm devices G08B)
 G01F 23/02
·  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
·  by dip members, e.g. dip-sticks
 G01F 23/06
·  by floats
 G01F 23/08
·  ·  actuating indicating, recording, or alarm devices by mechanical means
 G01F 23/10
·  ·  actuating indicating, recording, or alarm devices electrically
 G01F 23/12
·  ·  actuating indicating, recording, or alarm devices by magnetic means
 G01F 23/14
·  by measurement of pressure (measuring pressure in general G01L)
 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
·  by measurement of weight, e.g. to determine the level of stored liquefied gas (weighing in general G01G)
 G01F 23/22
·  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 23/06)
 G01F 23/24
·  ·  by measuring variations of resistance of resistors due to contact with conductor fluid
 G01F 23/26
·  ·  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
·  ·  by measuring the variations of parameters of electromagnetic, sonic, or ultrasonic waves applied directly to the liquid or fluent solid material
 G01F 25/00
Testing or calibrating apparatus for measuring volume, volume flow, or liquid level, or for metering by volume