Measuring steady or quasi-steady pressure of a fluid or a 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

GPHYSICS G01Measuring instruments G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE

G01L9/00Measuring steady or quasi-steady pressure of a fluid or a 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

G01L9/0001Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means G01L9/0002using variations in ohmic resistance G01L9/0004using variations in inductance G01L9/0005using variations in capacitance G01L9/0007using photoelectric means G01L9/0008using vibrations G01L9/001of an element not provided for in the following subgroups of G01L9/0008 G01L9/0011Optical excitation or measuring G01L9/0013of a string G01L9/0014Optical excitation or measuring of vibrations G01L9/0016of a diaphragm G01L9/0017Optical excitation or measuring G01L9/0019of a semiconductive element G01L9/002Optical excitation or measuring G01L9/0022of a piezoelectric element G01L9/0023Optical excitation or measuring G01L9/0025with acoustic surface waves G01L9/0026Transmitting or indicating the displacement of flexible, deformable tubes by electric, electro-mechanical, magnetic or electro-magnetic means G01L9/0027using variations in ohmic resistance G01L9/0029using variations in inductance G01L9/003using variations in capacitance G01L9/0032using photoelectric means G01L9/0033Transmitting or indicating the displacement of bellows by electric, electro-mechanical, magnetic, or electro-magnetic means G01L9/0035using variations in ohmic resistance G01L9/0036using variations in inductance G01L9/0038using variations in capacitance G01L9/0039using photoelectric means G01L9/0041Transmitting or indicating the displacement of flexible diaphragms G01L9/0042Constructional details associated with semiconductive diaphragm sensors G01L9/0044Constructional details of non-semiconductive diaphragms G01L9/0045Diaphragm associated with a buried cavity G01L9/0047Diaphragm with non uniform thickness G01L9/0048Details about the mounting of the diaphragm to its support or about the diaphragm edges G01L9/005Non square semiconductive diaphragm G01L9/0051using variations in ohmic resistance G01L9/0052of piezoresistive elements G01L9/0054integral with a semiconducting diaphragm G01L9/0055bonded on a diaphragm G01L9/0057of potentiometers G01L9/0058of pressure sensitive conductive solid or liquid material G01L9/006of metallic strain gauges fixed to an element other than the pressure transmitting diaphragm G01L9/0061using unbounded-wire-type strain gauges G01L9/0064the element and the diaphragm being in intimate contact G01L9/007using variations in inductance G01L9/0072using variations in capacitance G01L9/0073using a semiconductive diaphragm G01L9/0075using a ceramic diaphragm G01L9/0076using photoelectric means G01L9/0077for measuring reflected light G01L9/0079with Fabry-Perot arrangements G01L9/008using piezoelectric devices G01L9/0082Transmitting or indicating the displacement of capsules by electric, electro-mechanical, magnetic, or electro-mechanical means G01L9/0083using variations in ohmic resistance G01L9/0085using variations in inductance G01L9/0086using variations in capacitance G01L9/0088using photoelectric means G01L9/0089Transmitting or indicating the displacement of pistons by electrical, electro-mechanical, magnetic or electro-magnetic means G01L9/0091Transmitting or indicating the displacement of liquid mediums by electrical, electro-mechanical, magnetic or electro-magnetic means G01L9/0092using variations in ohmic resistance G01L9/0094using variations in inductance G01L9/0095using variations in capacitance G01L9/0097using photoelectric means G01L9/0098using semiconductor body comprising at least one PN junction as detecting element G01L9/02by making use of variation in ohmic resistance, e.g. of potentiometers G01L9/025with temperature compensating means G01L9/04of resistance-strain gauges G01L9/045with electric temperature compensating means G01L9/06of piezo-resistive devices G01L9/065with temperature compensating means G01L9/08by making use of piezo-electric devices G01L9/085with temperature compensating means G01L9/10by making use of variation in inductance G01L9/105with temperature compensating means G01L9/12by making use of variation in capacitance G01L9/125with temperature compensating means G01L9/14involving the displacement of magnets G01L9/16by making use of variations in the magnetic properties of material resulting from the application of stress G01L9/18by making use of electrokinetic cells