English: G 01 N 25/ 58 25/ 60 25/ 62 25/ 64 25/ 66 25/ 68 25/ 70 25/ 72 27 / 00 . . by measuring changes of properties of the material due to heat, cold, or expansion . . . for determining the wetness of steam . . by psychrometric means, e.g. wet-and-dry-bulb thermometers . . . using electric temperature-responsive elements . . by investigating dew-point . . . by varying the temperature of a condensing surface . . . by varying the temperature of the material, e.g. by compression, by expansion . Investigating presence of flaws (by investigating thermal conductivity 25/18) Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means (3/00 to 25/00 take precedence; measurement or testing of electric or magnetic variables or of electric or magnetic properties of materials G 01 R) . by investigating impedance . . by investigating resistance . . . of a liquid (involving electrolysis 27/26; involving polarography 27/48; measuring electric resistance of fluids G 01 R 27/22) . . . . Construction of measuring vessels; Electrodes therefor [2] . . . . which is flowing continuously . . . . . Investigation or analysis specially adapted for controlling or monitoring operations or for signalling (regulating G 05 D) . . . of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid . . . of an electrically-heated body in dependence upon change of temperature . . . . caused by burning or catalytic oxidation of surrounding material to be tested, e.g. of gas . . . . caused by changes in the thermal conductivity of a surrounding material to be tested (27/20 takes precedence) . . . Investigating the presence of flaws . . by investigating capacitance . . . Investigating the presence of flaws . by investigating electrochemical variables; by using electrolysis or electrophoresis (investigating resistance to corrosion 17/00; investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography, 30/00; immunoelectrophoresis 33/561; electrochemical processes or apparatus in general B 01 J; standard cells H 01 M 6/28) [5] . . Association of two or more measuring systems or cells, each measuring a different parameter, where the measurement results may be either used independently, the systems or cells being physically associated, or combined to produce a value for a further parameter [5] . . Electrolytic cell components . . . Electrodes, e.g. test electrodes; Half-cells (27/414 takes precedence) [5] 27/ 31 . . . . Half-cells with permeable membranes, e.g. semi-porous or perm-selective membranes [5] . . . . Calomel electrodes . . . . Biochemical electrodes [5] . . . . Ion-selective electrodes or membranes (glass electrodes 27/36) [5] . . . . Dropping-mercury electrodes . . . . Glass electrodes . . . . Cleaning of electrodes . . . Semi-permeable membranes or partitions . . . Salt-bridge leaks; Liquid junctions [5] . . Cells and electrode assemblies [5] . . . Cells with anode, cathode and cell electrolyte on the same side of a permeable membrane which separates them from the sample fluid [5] . . . Cells and probes with solid electrolytes [5] . . . . for investigating or analysing gases [5] . . . . . Oxygen concentration cells [5] . . . . . Oxygen pumping cells [5] . . . . for investigating or analysing of liquid metals [5] . . . Concentration cells using liquid electrolytes [5] . . . Ion-sensitive or chemical field-effect transistors, i.e. ISFETS or CHEMFETS [5] . . Systems (27/27 takes precedence) [5] . . . using cells and probes with solid electrolytes [5] . . . . Measuring voltages or currents with a combination of oxygen pumping cells and oxygen concentration cells [5] . . . Measuring deposition or liberation of materials from an electrolyte; Coulometry, i.e. measuring coulomb-equivalent of material in an electrolyte [5] . . . . using electrolysis to generate a reagent, e.g. for titration [5] . . . using electrophoresis [5] . . . . Cells therefor [5] . . . using polarography, i.e. measuring changes in current under a slowly-varying voltage . . . Systems involving the determination of the current at a single specific value, or small range of values, of applied voltage for producing selective measurement of one or more particular ionic species [5] . by investigating electrostatic variables (by investigating capacitance 27/22) . . Investigating the presence of flaws [3] . by investigating the ionisation of gases; by investigating electric discharges, e.g. emission of cathode (particle spectrometers H 01 J 49/00) . . using wave or particle radiation to ionise a gas, e.g. in an ionisation chamber . . . and measuring current or voltage . . using electric discharge to ionise a gas
French: ISFETS ou CHEMFETS [5] . . Systèmes (27/27 a priorité) [5] . . . utilisant des cellules et des sondes à électrolyte solide [5] . . . . Mesure des tensions ou des courants par une combinaison de cellules de concentration d’oxygène et de cellules à pompage d’oxygène [5] . . . Mesure du dépôt ou de la libération de matériaux d’un électrolyte; Coulométrie, c. à d. mesure de l’équivalent de Coulomb du matériau dans un électrolyte [5] . . . . utilisant l’électrolyse pour engendrer un réactif, p.ex. pour un dosage [5] . . . utilisant l’électrophorèse [5] . . . . Cellules à cet effet [5] . . . utilisant la polarographie, c. à d. la mesure des variations d’intensité sous une tension qui varie lentement . . . Systèmes impliquant la détermination du courant à une valeur unique spécifique, ou dans une petite plage de valeurs, pour une tension appliquée afin de produire la mesure sélective d’une ou plusieurs espèces ioniques particulières [5] . en recherchant les variables électrostatiques (en recherchant la capacité 27/22) . . Recherche de la présence de criques [3] . en recherchant l’ionisation des gaz; en recherchant les décharges électriques, p.ex. l’émission cathodique (spectromètres de particules H 01 J 49/00) . . Utilisation de l’onde ou de la radiation des particules pour ioniser un gaz, p.ex. dans une chambre d’ionisation . . . et mesure de l’intensité ou de la tension électriques . . Utilisation de la décharge électrique pour ioniser un gaz