| IPC 7 English version |
| G01R-G01R01166 |
G01R 13/00 - G01R 21/14  |
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| SECTION G – PHYSICS |
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| G 01 | MEASURING (counting G06M); TESTING |
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| G 01 R | MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (measuring physical variables of any kind by conversion into electric variables, see Note (4) following the title of class G01; measuring diffusion of ions in an electric field, e.g. electrophoresis, electro-osmosis, G01N; investigating non-electric or non-magnetic properties of materials by using electric or magnetic methods G01N; indicating correct tuning of resonant circuits H03J 3/12; monitoring electronic pulse counters H03K 21/40; monitoring operation of communication systems H04) |
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| Notes |
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| (1) | This subclass covers: |
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| – | measuring all kinds of electric or magnetic variables directly or by derivation from other electric or magnetic variables; |
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| – | measuring all kinds of electric or magnetic properties of materials; |
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| – | testing electric or magnetic devices, apparatus or networks (e.g. discharge tubes, amplifiers) or measuring their characteristics; |
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| – | indicating presence or sign of current or voltage; |
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| – | NMR, EPR or other spin-effect apparatus, not specially adapted for a particular application; [5] |
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| – | equipment for generating signals to be used for carrying out such tests and measurements. |
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| (2) | In this subclass, the following terms or expressions are used with the meanings indicated: |
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| – | "measuring" includes investigating; |
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| – | "instruments" or "measuring instruments" means electro-mechanical measuring mechanisms; |
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| – | "arrangements for measuring" means apparatus, circuits, or methods for measuring; |
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| (3) | Attention is drawn to the Notes following the title of class G01. |
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| (4) | In this subclass, group G01R 17/00 takes precedence over groups G01R 19/00 to G01R 31/00. |
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| Subclass Index |
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| ELECTRIC MEASURING INSTRUMENTS |
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| In general |
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| Details |
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| Manufacture; calibrating, testing |
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| ELECTROMECHANICAL MEASUREMENT OF TIME INTEGRAL OF POWER OR CURRENT |
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| MEASURING ELECTRIC VARIABLES |
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| Details of measuring arrangements |
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| Arrangements for displaying |
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| Involving comparison with a reference value |
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| Current or voltage; power, power factor; time integral of power or current; frequency; resistance, reactance, impedance |
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| Other variables |
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| TESTING ELECTRIC PROPERTIES OR LOCATING FAULTS |
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| MEASURING MAGNETIC VARIABLES |
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1/ | 00 | Details of instruments or arrangements of the types included in groups G01R 5/00 to G01R 13/00 (constructional details particular to arrangements for measuring the electric consumption G01R 11/02) [3] |
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1/ | 02 | . | General constructional details (details of a kind applicable to measuring arrangements not specially adapted for a specific variable G01D 7/00) |
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1/ | 04 | . | . | Housings; Supporting members; Arrangements of terminals (terminals H01R; terminal strips or boards H02B; housings for electrical apparatus H05K) |
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1/ | 06 | . | . | Measuring leads; Measuring probes (G01R 19/145, G01R 19/165 take precedence; end pieces for leads H01R 11/00) [3] |
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1/ | 067 | . | . | . | Measuring probes [3] |
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1/ | 07 | . | . | . | . | Non contact-making probes [6] |
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1/ | 073 | . | . | . | . | Multiple probes [3] |
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1/ | 08 | . | . | Pointers; Scales, Scale illumination |
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1/ | 10 | . | . | Arrangements of bearings (bearings in general F16C) |
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1/ | 12 | . | . | . | of strip or wire bearings |
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1/ | 14 | . | . | Braking arrangements; Damping arrangements |
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1/ | 16 | . | . | Magnets (in general H01F) |
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1/ | 18 | . | . | Screening arrangements against electric or magnetic fields, e.g. against earth's field |
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1/ | 20 | . | Modifications of basic electric elements for use in electric measuring instruments; Structural combinations of such elements with such instruments (instrument transformers per se H01F 38/20) |
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1/ | 22 | . | . | Tong testers acting as secondary windings of current transformers (voltage or current isolation using transformers G01R 15/18) |
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1/ | 24 | . | . | Transmission-line, e.g. waveguide, measuring sections, e.g. slotted section |
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1/ | 26 | . | . | . | with linear movement of probe |
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1/ | 28 | . | Provision in measuring instruments for reference values, e.g. standard voltage, standard waveform |
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1/ | 30 | . | Structural combination of electric measuring instruments with basic electronic circuits, e.g. with amplifier |
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1/ | 36 | . | Overload-protection arrangements or circuits for electric measuring instruments (in general H02H) |
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1/ | 38 | . | Arrangements for altering the indicating characteristic, e.g. by modifying the air gap (circuits G01D 3/02) |
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1/ | 40 | . | Modifications of instruments to indicate the maximum or the minimum value reached in a time interval, e.g. by maximum indicator pointer [3] |
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1/ | 42 | . | . | thermally operated |
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1/ | 44 | . | Modifications of instruments for temperature compensation [2] |
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3/ | 00 | Apparatus or processes specially adapted for the manufacture of measuring instruments |
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5/ | 00 | Instruments for converting a single current or a single voltage into a mechanical displacement (vibration galvanometers G01R 9/02) |
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5/ | 02 | . | Moving-coil instruments |
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5/ | 04 | . | . | with magnet external to the coil |
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5/ | 06 | . | . | with core magnet |
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5/ | 08 | . | . | specially adapted for wide angle deflection; with eccentrically-pivoted moving coil |
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5/ | 10 | . | String galvanometers |
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5/ | 12 | . | Loop galvanometers |
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5/ | 14 | . | Moving-iron instruments |
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5/ | 16 | . | . | with pivoting magnet |
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5/ | 18 | . | . | with pivoting soft iron, e.g. needle galvanometer |
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5/ | 20 | . | Induction instruments e.g. Ferraris instruments |
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5/ | 22 | . | Thermoelectric instruments (measuring effective values of currents or voltages using thermoconverters G01R 19/03) |
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5/ | 24 | . | . | operated by elongation of a strip or wire or by expansion of a gas or fluid |
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5/ | 26 | . | . | operated by deformation of a bimetallic element |
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5/ | 28 | . | Electrostatic instruments (combined with radiation detector G01T) |
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5/ | 30 | . | . | Leaf electrometers |
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5/ | 32 | . | . | Wire electrometers; Needle electrometers |
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5/ | 34 | . | . | Quadrant electrometers |
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7/ | 00 | Instruments capable of converting two or more currents or voltages into a single mechanical displacement (G01R 9/00 takes precedence) |
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7/ | 02 | . | for forming a sum or a difference |
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7/ | 04 | . | for forming a quotient (for measuring resistance G01R 27/08) |
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7/ | 06 | . | . | moving-iron type |
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7/ | 08 | . | . | moving-coil type, e.g. crossed-coil type |
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7/ | 10 | . | . | . | having more than two moving coils |
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7/ | 12 | . | for forming product |
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7/ | 14 | . | . | moving-iron type |
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7/ | 16 | . | . | having both fixed and moving coils, i.e. dynamometers |
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7/ | 18 | . | . | . | with iron core magnetically coupling fixed and moving coils |
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9/ | 00 | Instruments employing mechanical resonance |
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9/ | 02 | . | Vibration galvanometers, e.g. for measuring current |
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9/ | 04 | . | using vibrating reeds, e.g. for measuring frequency |
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9/ | 06 | . | . | magnetically driven |
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9/ | 08 | . | . | piezo-electrically driven |
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11/ | 00 | Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption (other arrangements therefor G01R 22/00; monitoring electric consumption of electrically-propelled vehicles B60L 3/00) |
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11/ | 02 | . | Constructional details (applicable to electric measuring instruments in general G01R 1/00) |
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11/ | 04 | . | . | Housings; Supporting racks; Arrangements of terminals |
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11/ | 06 | . | . | Magnetic circuits of induction meters [2] |
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11/ | 067 | . | . | . | Coils therefor [2] |
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11/ | 073 | . | . | . | Armatures therefor [2] |
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11/ | 09 | . | . | . | . | Disc armatures [2] |
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11/ | 10 | . | . | Braking magnets; Damping arrangements |
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11/ | 12 | . | . | Arrangements of bearings (bearings in general F16C) |
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11/ | 14 | . | . | . | with magnetic relief |
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11/ | 16 | . | . | Adaptations of counters to electricity meters |
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11/ | 17 | . | . | Compensating for errors; Adjusting or regulating means therefor [2] |
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11/ | 18 | . | . | . | Compensating for variations in ambient conditions [2] |
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11/ | 185 | . | . | . | . | Temperature compensation [2] |
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11/ | 19 | . | . | . | Compensating for errors caused by disturbing torque, e.g. rotating-field errors of polyphase meters [2] |
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11/ | 20 | . | . | . | Compensating for phase errors in induction meters [2] |
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11/ | 21 | . | . | . | Compensating for errors caused by damping effects of the current, e.g. adjustment in the overload range [2] |
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11/ | 22 | . | . | . | Adjusting torque, e.g. adjusting starting torque, adjusting of polyphase meters for obtaining equal torques [2] |
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11/ | 23 | . | . | . | Compensating for errors caused by friction, e.g. adjustment in the light-load range [2] |
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11/ | 24 | . | . | Arrangements for avoiding or indicating fraudulent use [4] |
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11/ | 25 | . | . | Arrangements for indicating or signalling faults [2,4] |
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| Note |
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| Groups G01R 11/48 to G01R 11/66 take precedence over groups G01R 11/30 to G01R 11/46. [4] |
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11/ | 30 | . | Dynamo-electric motor meters |
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11/ | 32 | . | . | Watt-hour meters |
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11/ | 34 | . | . | Ampère-hour meters |
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11/ | 36 | . | Induction meters, e.g. Ferraris meters (Ferraris instruments G01R 5/20) |
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11/ | 38 | . | . | for single-phase operation |
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11/ | 40 | . | . | for polyphase operation |
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11/ | 42 | . | . | . | Circuitry therefor |
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11/ | 46 | . | Electrically-operated clockwork meters; Oscillatory meters; Pendulum meters |
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11/ | 48 | . | Meters specially adapted for measuring real or reactive components; Meters specially adapted for measuring apparent energy |
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11/ | 50 | . | . | for measuring real component |
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11/ | 52 | . | . | for measuring reactive component |
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11/ | 54 | . | . | for measuring simultaneously at least two of the following three variables: real component, reactive component, apparent energy |
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11/ | 56 | . | Special tariff meters (tariff metering in general G01D 4/00) |
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11/ | 57 | . | . | Multi-rate meters (G01R 11/63 takes precedence) [2] |
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11/ | 58 | . | . | . | Tariff-switching devices therefor [2] |
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11/ | 60 | . | . | Subtraction meters; Meters measuring maximum or minimum-load hours |
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11/ | 63 | . | . | Over-consumption meters, e.g. measuring consumption while a predetermined level of power is exceeded [2] |
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11/ | 64 | . | . | Maximum meters, e.g. tariff for a period is based on maximum demand within that period |
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11/ | 66 | . | . | . | Circuitry |
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 | G01R 13/00 - G01R 21/14 |
