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IPC 7
 
G01D-G01D00712
  G01D 9/00 - G01D 21/02  

SECTION G – PHYSICS


G 01MEASURING (counting G06M); TESTING


G 01 DMEASURING 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 



1/

00Measuring 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)

1/

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

1/

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

1/

06..by intermittent summation

1/

08...over fixed periods of time

1/

10.giving differentiated values

1/

12.giving a maximum or minimum of a value

1/

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

1/

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

1/

18.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]


3/

00Measuring arrangements with provision for the special purposes referred to in the subgroups of this group

3/

02.with provision for altering or correcting the transfer function

3/

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

3/

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

3/

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

3/

036..on measuring arrangements themselves  [6]

3/

06.with provision for operation by a null method

3/

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

3/

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


4/

00Tariff 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)

4/

02.Details

4/

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

4/

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

4/

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

4/

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

4/

12..Apparatus for indicating or recording progressive maximum

4/

14..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

4/

16.Apparatus for indicating or recording maximum or minimum load hours

4/

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


5/

00Mechanical 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.

5/

02.using mechanical means

5/

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

5/

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

5/

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

5/

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

5/

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

5/

14..influencing the magnitude of a current or voltage

5/

16...by varying resistance

5/

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

5/

18...by varying effective impedance of discharge tubes or semiconductor devices

5/

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

5/

22....differentially influencing two coils

5/

24...by varying capacitance

5/

241....by relative movement of capacitor electrodes  [6]

5/

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

5/

243..influencing the phase or frequency of ac

5/

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

5/

245...using a variable number of pulses in a train

5/

246...by varying the duration of individual pulses

5/

247...using time shifts of pulses

5/

248...by varying pulse repetition frequency

5/

249...using pulse code

5/

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

5/

251...one conductor or channel

5/

252...a combination of conductors or channels

5/

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

5/

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

5/

30...the beams of light being detected by photocells

5/

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

5/

34...the beams of light being detected by photocells

5/

347....using displacement encoding scales  [6]

5/

353....influencing the transmission properties of an optical fibre  [6]

5/

36....Forming the light into pulses

5/

38.....by diffraction gratings

5/

39..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

5/

40..specially adapted for use with infra-red light

5/

42.using fluid means

5/

44..using jets of fluid

5/

46...by deflecting or throttling the flow

5/

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

5/

50..derived from a radioactive source

5/

52...detected by a counter tube

5/

54.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.

5/

56..using electric or magnetic means

5/

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

5/

60..using fluid means

5/

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


7/

00Indicating measured values

7/

02.Indicating value of two or more variables simultaneously

7/

04..using a separate indicating element for each variable

7/

06...Luminous indications projected on a common screen

7/

08..using a common indicating element for two or more variables

7/

10...giving indication in co-ordinate form

7/

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

   G01D 9/00 - G01D 21/02  
 

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