Classifications

• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
  • G01R17/00—Measuring arrangements involving comparison with a reference value, e.g. bridge
  • G01R17/02—Arrangements in which the value to be measured is automatically compared with a reference value
  • G01R17/06—Automatic balancing arrangements
  • G01R17/08—Automatic balancing arrangements in which a force or torque representing the measured value is balanced by a force or torque representing the reference value
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
  • G01K3/00—Thermometers giving results other than momentary value of temperature
  • G01K3/08—Thermometers giving results other than momentary value of temperature giving differences of values; giving differentiated values
  • G01K3/10—Thermometers giving results other than momentary value of temperature giving differences of values; giving differentiated values in respect of time, e.g. reacting only to a quick change of temperature
  • G01K3/12—Thermometers giving results other than momentary value of temperature giving differences of values; giving differentiated values in respect of time, e.g. reacting only to a quick change of temperature based upon expansion or contraction of materials
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
  • G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
  • G01L11/004—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00 by the use of counterbalancing forces
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
  • G01L13/00—Devices or apparatus for measuring differences of two or more fluid pressure values
  • G01L13/02—Devices or apparatus for measuring differences of two or more fluid pressure values using elastically-deformable members or pistons as sensing elements
  • G01L13/023—Devices or apparatus for measuring differences of two or more fluid pressure values using elastically-deformable members or pistons as sensing elements using bellows
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
  • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
  • G01L9/0026—Transmitting or indicating the displacement of flexible, deformable tubes by electric, electromechanical, magnetic or electromagnetic means
  • G01L9/0032—Transmitting or indicating the displacement of flexible, deformable tubes by electric, electromechanical, magnetic or electromagnetic means using photoelectric means

Landscapes

• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Electromagnetism (AREA)
• Measuring Fluid Pressure (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=22069040

Family Applications (1)

Country Status (10)

Families Citing this family (7)

• 1970
  • 1970-08-24 US US66366A patent/US3625062A/en not_active Expired - Lifetime
• 1971
  • 1971-07-21 CA CA118,774A patent/CA942965A/en not_active Expired
  • 1971-07-28 AU AU31738/71A patent/AU463284B2/en not_active Expired
  • 1971-08-09 DE DE19712140660 patent/DE2140660A1/de active Pending
  • 1971-08-19 NL NL7111424A patent/NL7111424A/xx unknown
  • 1971-08-20 GB GB3918371A patent/GB1336943A/en not_active Expired
  • 1971-08-23 ES ES0394462A patent/ES394462A1/es not_active Expired
  • 1971-08-23 CH CH1233471A patent/CH542435A/fr not_active IP Right Cessation
  • 1971-08-24 FR FR7130630A patent/FR2105951A5/fr not_active Expired
  • 1971-08-24 BE BE771714A patent/BE771714A/xx unknown

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