IPC 7 English version G01D !A-G01D 7/12

IPC ⁷ English version

G01D-G01D00712

G01D 9/00 - G01D 21/02

SECTION G – PHYSICS

G 01

MEASURING (counting G06M); TESTING

G 01 D

MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED BY A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR (means structurally associated with lightning or other overvoltage discharging apparatus for recording the operation thereof G01R; displaying information in general G09F; recording in a way which requires playback through a transducer G11B)

Notes

(1)

This subclass covers:

–

devices for indicating or recording the results of measurements, not peculiar to variables covered by a single other subclass;

–

analogous arrangements but in which the input is not a variable to be measured, e.g. a hand operation;

–

details of measuring instruments, which are of general interest;

–

measurement transducers not adapted solely for the measurement of a single specified variable and not provided for elsewhere, i.e. means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting;

–

measuring or testing not otherwise provided for.

(2)

Attention is drawn to the Notes following the title of class G01.

Subclass Index

MEASURING ARRANGEMENTS IN GENERAL

With data restitution in other form than their instantaneous value

G01D 1/00

With provision for special purposes

G01D 3/00

Transferring and converting arrangements, prevailing means used

G01D 5/00

Component parts

G01D 11/00

INDICATING; COMPONENT PARTS OF INDICATORS

G01D 7/00, G01D 13/00

RECORDING; COMPONENT PARTS OF RECORDERS

G01D 9/00, G01D 15/00

TESTING OR CALIBRATING

G01D 18/00

MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR

G01D 21/00

TARIFF METERING

G01D 4/00

Measuring arrangements giving results other than momentary value of variable, of general application (G01D 3/00 takes precedence; in tariff metering apparatus G01D 4/00; transducers not specially adapted for a specific variable G01D 5/00; computing G06)

giving mean values, e.g. root mean square values (measuring root mean square values of currents or voltages G01R 19/02)

giving integrated values (giving mean values G01D 1/02)

by intermittent summation

over fixed periods of time

giving differentiated values

giving a maximum or minimum of a value

giving a distribution function of a value, i.e. number of times the value comes within specified ranges of amplitude

giving a value which is a function of two or more values, e.g. product, ratio

with arrangements for signalling that a predetermined value of an unspecified parameter has been exceeded (G01D 1/14 takes precedence; for a specified parameter, see the subclass relevant to this parameter, e.g. level of a liquid exceeded G01F, temperature exceeded G01K) [3]

Measuring arrangements with provision for the special purposes referred to in the subgroups of this group

with provision for altering or correcting the transfer function

024

for range change; Arrangements for substituting one sensing member by another [6]

028

mitigating undesired influences, e.g. temperature, pressure [6]

032

affecting incoming signal, e.g. by averaging; gating undesired signals [6]

036

on measuring arrangements themselves [6]

with provision for operation by a null method

with provision for safeguarding the apparatus, e.g. against abnormal operation, against breakdown

with provision for switching-in of additional or auxiliary indicators or recorders

Tariff metering apparatus (tariff meters for measuring the time integral of electric power or current G01R 11/56; in taximeters G07B 13/00; coin-freed mechanisms therefor G07F)

Details

Resetting-mechanisms, e.g. for indicating members (for mechanical counters G06M 1/28)

Arrangement of clutches between driving and indicating member, e.g. of hysteresis clutch (G01D 4/04 takes precedence)

Transfer of indication from a counter into a summing counter (mechanical counters G06M)

Maximum indicating or recording apparatus, i.e. where the tariff for a period is based on a maximum demand within that period

Apparatus for indicating or recording progressive maximum

Fixed-demand indicating or recording apparatus, i.e. where indication is made when a predetermined quantity has been consumed during a time interval greater or less than a predetermined time interval

Apparatus for indicating or recording maximum or minimum load hours

Apparatus for indicating or recording overconsumption with opposing torque which comes into effect when a predetermined level is exceeded, e.g. subtraction meters

Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable (G01D 3/00 takes precedence; specially adapted for apparatus giving results other than momentary value of variable G01D 1/00; sensing members, see the relevant subclasses, e.g. of G01, H01; for converting a single current or a single voltage into a mechanical displacement G01R 5/00; specially adapted for high-voltage or high-current measuring arrangements G01R 15/04, G01R 15/14; measuring currents or voltages using digital measurement techniques G01R 19/25; transmission systems for measured values, control or similar signals G08C, e.g. electrical signals G08C 19/00) [6]

Note

The subgroups of this main group are distinguished by the means which is of major importance. Thus the mere application of other means for giving a final indication does not affect the classification.

using mechanical means

using levers; using cams; using gearing (gearing in general F16)

acting through a wall or enclosure, e.g. by bellows, by magnetic coupling (in general F16)

Reducing the effects of friction, e.g. by applying vibrations

Applying external forces to increase force available for operation of indicating or recording part

using electric or magnetic means (G01D 5/06 takes precedence) [3]

influencing the magnitude of a current or voltage

by varying resistance

165

by relative movement of a point of contact and a resistive track [6]

by varying effective impedance of discharge tubes or semiconductor devices

by varying inductance, e.g. by a movable armature

differentially influencing two coils

by varying capacitance

241

by relative movement of capacitor electrodes [6]

242

by varying output of an electrodynamic device, e.g. of a tachodynamo

243

influencing the phase or frequency of ac

244

influencing characteristics of pulses or pulse trains; generating pulses or pulse trains [6]

245

using a variable number of pulses in a train

246

by varying the duration of individual pulses

247

using time shifts of pulses

248

by varying pulse repetition frequency

249

using pulse code

Selecting one or more conductors or channels from a plurality of conductors or channels, e.g. by closing contacts

251

one conductor or channel

252

a combination of conductors or channels

using optical means, i.e. using infra-red, visible or ultra-violet light

with deflection of beams of light, e.g. for direct optical indication (G01D 5/40 takes precedence)

the beams of light being detected by photocells

with attenuation or whole or partial obturation of beams of light (G01D 5/40 takes precedence)

the beams of light being detected by photocells

347

using displacement encoding scales [6]

353

influencing the transmission properties of an optical fibre [6]

Forming the light into pulses

by diffraction gratings

Scanning a visible indication of the measured value and reproducing this indication at a remote place, e.g. on the screen of a cathode-ray tube

specially adapted for use with infra-red light

using fluid means

using jets of fluid

by deflecting or throttling the flow

using wave or particle radiation means (G01D 5/26 takes precedence)

derived from a radioactive source

detected by a counter tube

using means specified in two or more of groups G01D 5/02, G01D 5/12, G01D 5/26, G01D 5/42, and G01D 5/48

Notes

(1)

For a combination of two or more of the means specified, the first applicable one of the subgroups below takes precedence over any others of these groups.

(2)

Classification is made in this group only if no other group can be selected as being predominantly applicable.

using electric or magnetic means

using optical means, i.e. using infra-red, visible or ultra-violet light

using fluid means

using wave or particle radiation means not covered by group G01D 5/58

Indicating measured values

Indicating value of two or more variables simultaneously

using a separate indicating element for each variable

Luminous indications projected on a common screen

using a common indicating element for two or more variables

giving indication in co-ordinate form

Audible indication of meter readings, e.g. for the blind [2]

G01D 9/00 - G01D 21/02