G
SECTION G — PHYSICS
  
INSTRUMENTS
 G01
MEASURING (counting G06M); TESTING
 G01K
MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR (sensing temperature changes for compensating measurements of other variables or for compensing readings of instruments for variations in temperature, see G01D or relevant subclass for variable measured; radiation pyrometry G01J; investigating or analysing materials by use of thermal means G01N 25/00; compound sensitive elements, e.g. bimetallic, G12B 1/02)
 G01K

Note(s)

  1. In this subclass, the following term is used with the meaning indicated:
    • "thermometer" includes thermally-sensitive elements not provided for in other subclasses.
  2. Attention is drawn to the Notes following the title of class G01.
 G01K 1/00
Details of thermometers
 G01K 1/02
·  Special applications of indicating or recording means, e.g. for remote indications (indicating or recording measurements in general G01D)
 G01K 1/04
·  ·  Scales
 G01K 1/06
·  ·  ·  Arrangements for facilitating reading, e.g. illumination, magnifying glass
 G01K 1/08
·  Protective devices, e.g. casings
 G01K 1/10
·  ·  for preventing chemical attack
 G01K 1/12
·  ·  for preventing damage due to heat overloading
 G01K 1/14
·  Supports; Fastening devices; Mounting thermometers in particular locations
 G01K 1/16
·  Special arrangements for conducting heat from the object to the sensitive element
 G01K 1/18
·  ·  for reducing thermal inertia
 G01K 1/20
·  Compensating for effects of temperature changes other than those to be measured, e.g. changes in ambient temperature
 G01K 1/22
·  ·  by means of fluid contained in a hollow body having parts which are deformable or displaceable under the pressure developed by the fluid
 G01K 1/24
·  ·  by means of compounded strips or plates, e.g. bimetallic strips
 G01K 1/26
·  Compensating for effects of pressure changes
 G01K 3/00
Thermometers giving results other than momentary value of temperature
 G01K 3/02
·  giving mean values; giving integrated values
 G01K 3/04
·  ·  in respect of time
 G01K 3/06
·  ·  in respect of space
 G01K 3/08
·  giving differences of values (using thermo-electric elements G01K 7/02); giving differentiated values
 G01K 3/10
·  ·  in respect of time, e.g. reacting only to a quick change of temperature
 G01K 3/12
·  ·  ·  based upon expansion or contraction of materials
 G01K 3/14
·  ·  in respect of space
 G01K 5/00
Thermometers based on the expansion or contraction of a material (G01K 9/00 takes precedence; giving other than momentary value of temperature G01K 3/00; of vapour arising from a liquid G01K 11/02; thermally-actuated switches H01H)
 G01K 5/02
·  the material being a liquid (contained in a hollow body having parts which are deformable or displaceable under the pressure developed by the material G01K 5/32)
 G01K 5/04
·  ·  Details
 G01K 5/06
·  ·  ·  Arrangements for driving back the liquid column
 G01K 5/08
·  ·  ·  Capillary tubes
 G01K 5/10
·  ·  ·  Containers for the liquid
 G01K 5/12
·  ·  ·  Selection of liquid compositions
 G01K 5/14
·  ·  the liquid displacing a further liquid column or a solid body (for maximum or minimum indication G01K 5/20)
 G01K 5/16
·  ·  with electric contacts
 G01K 5/18
·  ·  with electric conversion means for final indication
 G01K 5/20
·  ·  with means for indicating a maximum or a minimum or both (G01K 5/22 takes precedence)
 G01K 5/22
·  ·  with provision for expansion indicating over not more than a few degrees, e.g. clinical thermometer
 G01K 5/24
·  ·  with provision for measuring the difference between two temperatures
 G01K 5/26
·  ·  with provision for adjusting zero point of scale, e.g. Beckmann thermometer
 G01K 5/28
·  the material being a gas (contained in a hollow body having parts which are deformable or displaceable under the pressure developed by the material G01K 5/32)
 G01K 5/30
·  ·  the gas displacing a liquid column
 G01K 5/32
·  the material being a fluid contained in a hollow body having parts which are deformable or displaceable under the pressure developed by the material (under pressure developed by evaporation G01K 11/04; pressure-measuring devices in general G01L)
 G01K 5/34
·  ·  the body being a capsule (G01K 5/36, G01K 5/42 take precedence)
 G01K 5/36
·  ·  the body being a tubular spring, e.g. Bourdon tube
 G01K 5/38
·  ·  ·  of spiral formation
 G01K 5/40
·  ·  ·  of helical formation
 G01K 5/42
·  ·  the body being a bellows
 G01K 5/44
·  ·  the body being a cylinder and piston
 G01K 5/46
·  ·  with electric conversion means for final indication
 G01K 5/48
·  the material being a solid
 G01K 5/50
·  ·  arranged for free expansion or contraction
 G01K 5/52
·  ·  ·  with electrical conversion means for final indication
 G01K 5/54
·  ·  consisting of pivotally-connected elements
 G01K 5/56
·  ·  constrained so that expansion or contraction causes a deformation of the solid
 G01K 5/58
·  ·  ·  the solid body being constrained at more than one point, e.g. rod, plate, diaphragm (G01K 5/62 takes precedence)
 G01K 5/60
·  ·  ·  ·  the body being a flexible wire or ribbon
 G01K 5/62
·  ·  ·  the solid body being formed of compounded strips or plates, e.g. bimetallic strip
 G01K 5/64
·  ·  ·  ·  Details of the compound system
 G01K 5/66
·  ·  ·  ·  ·  Selection of composition of the components of the system
 G01K 5/68
·  ·  ·  ·  ·  Shape of the system
 G01K 5/70
·  ·  ·  ·  specially adapted for indicating or recording
 G01K 5/72
·  ·  ·  ·  ·  with electric transmission means for final indication
 G01K 7/00
Thermometers based on the use of electric or magnetic elements directly sensitive to heat (giving results other than momentary value of temperature G01K 3/00; measuring electric or magnetic variables G01R)
 G01K 7/02
·  using thermo-electric elements, e.g. thermo-couples (thermo-electric or thermo-magnetic devices per se H01L 35/00, H01L 37/00)
 G01K 7/04
·  ·  the object to be measured not forming one of the thermo-electric materials
 G01K 7/06
·  ·  ·  the thermo-electric materials being arranged one within the other with the junction at one end exposed to the object, e.g. sheathed type
 G01K 7/08
·  ·  the object to be measured forming one of the thermo-electric materials, e.g. pointed type
 G01K 7/10
·  ·  Arrangements for compensating for auxiliary variables, e.g. length of lead
 G01K 7/12
·  ·  ·  Arrangements with respect to the cold junction, e.g. preventing influence of temperature of surrounding air
 G01K 7/14
·  ·  Arrangements for modifying the output characteristic
 G01K 7/16
·  using resistive elements (resistive elements per se H01C, H01L)
 G01K 7/18
·  ·  the element being a linear resistance, e.g. platinum resistance thermometer (G01K 7/26 takes precedence)
 G01K 7/20
·  ·  ·  in a specially-adapted circuit, e.g. bridge circuit
 G01K 7/22
·  ·  the element being a non-linear resistance, e.g. thermistor (G01K 7/26 takes precedence)
 G01K 7/24
·  ·  ·  in a specially-adapted circuit, e.g. bridge circuit
 G01K 7/26
·  ·  the element being an electrolyte
 G01K 7/28
·  ·  ·  in a specially-adapted circuit, e.g. bridge circuit
 G01K 7/30
·  using thermal noise of resistances or conductors
 G01K 7/32
·  using change of resonant frequency of a crystal
 G01K 7/34
·  using capacitative elements (capacitors per se H01G)
 G01K 7/36
·  using magnetic elements, e.g. magnets, coils (magnetic elements per se H01F)
 G01K 7/38
·  ·  the variations of temperature influencing the magnetic permeability
 G01K 7/40
·  using ionisation of gases
 G01K 9/00
Thermometers based upon movements caused by redistribution of weight, e.g. tilting thermometer (not giving momentary value of temperature G01K 3/00)
 G01K 11/00
Thermometers based upon physical or chemical changes not covered by group G01K 3/00, G01K 5/00, G01K 7/00, or G01K 9/00
 G01K 11/02
·  using evaporation or sublimation, e.g. by observing boiling
 G01K 11/04
·  ·  from material contained in a hollow body having parts which are deformable or displaceable under the pressure developed by the vapour
 G01K 11/06
·  using melting, freezing, or softening
 G01K 11/08
·  ·  of disposable test bodies, e.g. cone
 G01K 11/10
·  using sintering
 G01K 11/12
·  using change of colour or translucency (heat-sensitive sheets for use in thermography B41M 5/00)
 G01K 11/14
·  ·  of inorganic materials
 G01K 11/16
·  ·  of organic materials
 G01K 11/18
·  ·  of materials which change translucency
 G01K 11/20
·  using thermoluminescent materials
 G01K 11/22
·  using measurement of acoustic effects
 G01K 11/24
·  ·  of the velocity of propagation of sound
 G01K 11/26
·  ·  of resonant frequencies
 G01K 11/28
·  using measurements of density (measuring density in general G01N)
 G01K 13/00
Adaptations of thermometers for specific purposes
 G01K 13/02
·  for measuring temperature of moving fluids and granular materials capable of flow
 G01K 13/04
·  for measuring temperature of moving solid bodies
 G01K 13/06
·  ·  in linear movement
 G01K 13/08
·  ·  in rotary movement
 G01K 13/10
·  for measuring temperature within piled or stacked materials (by special arrangements for conducting heat from the object to the sensitive element G01K 1/16)
 G01K 13/12
·  combined with sampling devices for measuring temperatures of samples of material
 G01K 15/00
Testing or calibrating of thermometers
 G01K 17/00
Measuring quantity of heat (measuring temperature by calorimetry G01K 3/00-G01K 11/00; specially adapted for measuring thermal properties of materials, e.g. specific heat, heat of combustion, G01N)
 G01K 17/02
·  Calorimeters using transport of an indicating substance, e.g. evaporation calorimeters
 G01K 17/04
·  Calorimeters using compensation methods
 G01K 17/06
·  Measuring quantity of heat conveyed by flowing medium, e.g. in heating systems (G01K 17/02, G01K 17/04 take precedence)
 G01K 17/08
·  ·  based upon measurement of temperature difference
 G01K 17/10
·  ·  ·  between an inlet and an outlet point, combined with measurement of rate of flow of the medium
 G01K 17/12
·  ·  ·  ·  Indicating product of flow and temperature difference directly
 G01K 17/14
·  ·  ·  ·  ·  using mechnical means for both measurements
 G01K 17/16
·  ·  ·  ·  ·  using electrical means for both measurements
 G01K 17/18
·  ·  ·  ·  ·  using electrical means for one measurement and mechanical means for the other
 G01K 17/20
·  ·  ·  across a radiating surface, combined with ascertainment of the heat-transmission coefficient
 G01K 19/00
Testing or calibrating calorimeters