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 compensating readings of instruments for variation in temperature, see G01D or relevant sub-class for variable measured; radiation pyrometry G01J; testing or determining physical or chemical properties of materials by measuring temperatures G01N; compound sensitive elements, e.g. bimetallic, G12B 1/02)
 G01K

Note(s)

  1. Attention is drawn to the notes immediately following the class title (G01).
  2. In this sub-class, the word "thermometer" includes thermally-sensitive elements not provided for in other sub-classes.
 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 H01V)
 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