The Measuring Instruments Regulations 2016

The flowrate range of the water.

2

The temperature range of the water.

3

The relative pressure range of the water, the range being 0.3 bar to at least 10 bar at Q₃.

4

For the power supply: the nominal value of the AC voltage supply and/or the limits of DC supply.

5

The MPE, positive or negative, on volumes delivered at flowrates between the transitional flowrate (Q₂) (included) and the overload flowrate (Q₄) is:

6

The MPE, positive or negative, on volumes delivered at flowrates between the minimum flowrate (Q₁) and the transitional flowrate (Q₂) (excluded) is 5 % for water having any temperature.

Electromagnetic immunity

7

7

The effect of an electromagnetic disturbance on a water meter shall be such that:

• — the change in the measurement result is no greater than the critical change value as defined in paragraph 7.1.3, or

• — the indication of the measurement result is such that it cannot be interpreted as a valid result, such as a momentary variation that cannot be interpreted, memorised or transmitted as a measuring result.

7

After undergoing an electromagnetic disturbance the water meter shall:

• — recover to operate within MPE, and

• — have all measurement functions safeguarded, and

• — allow recovery of all measurement data present just before the disturbance.

7

The critical change value is the smaller of the two following values:

• — the volume corresponding to half of the magnitude of the MPE in the upper zone on the measured volume;

• — the volume corresponding to the MPE on the volume corresponding to one minute at flowrate Q₃.

Durability

7

After an appropriate test, taking into account the period of time estimated by the manufacturer, has been performed, the following criteria shall be satisfied:

7

The variation of the measurement result after the durability test, when compared with the initial measurement result, shall not exceed:

• — 3 % of the metered volume between Q₁ included and Q₂ excluded;

• — 1.5 % of the metered volume between Q₂ included and Q₄ included.

7

The error of indication for the volume metered after the durability test shall not exceed:

• — ± 6 % of the metered volume between Q₁ included and Q₂ excluded;

• — ± 2.5 % of the metered volume between Q₂ included and Q₄ included for water meters intended to meter water with a temperature between 0.1 °C and 30 °C,

Suitability

8

The meter shall be able to be installed to operate in any position unless clearly marked otherwise.

8

The manufacturer shall specify whether the meter is designed to measure reverse flow. In such a case, the reverse flow volume shall either be subtracted from the cumulated volume or shall be separately recorded. The same MPE shall apply to both forward and reverse flow.

Units of Measurement

9

Metered volume shall be displayed in cubic metres.

Putting into Use

10

The requirements under paragraphs 1, 2 and 3 are determined by the utility or the person legally designated for installing the meter, so that the meter is appropriate for the accurate measurement of consumption that is foreseen or foreseeable.

SCHEDULE 1D — GAS METERS (MI-002) (Annex IV to the Directive)

The relevant requirements of Schedule 1A, the specific requirements of this Schedule and the conformity assessment procedures listed in this Schedule, apply to gas meters.

PART I — SPECIFIC REQUIREMENTS

GAS METERS

1

Rated operating conditions

1

The flowrate range of the gas shall fulfil at least the following conditions:

1

The temperature range of the gas, with a minimum range of 40 °C.

The fuel/gas related conditions

1

The gas meter shall be designed for the range of gases and supply pressures of the United Kingdom. In particular the manufacturer shall indicate:

• — the gas family or group;

• — the maximum operating pressure.

1

A minimum temperature range of 50 °C for the climatic environment.

1

The nominal value of the AC voltage supply and/or the limits of DC supply.

Maximum permissible error (MPEs)

2

Gas meter indicating the volume at metering conditions or mass

2

The gas meter shall not exploit the MPEs or systematically favour any party.

2

For a gas meter with temperature conversion, which only indicates the converted volume, the MPE of the meter is increased by 0.5 % in a range of 30 °C extending symmetrically around the temperature specified by the manufacturer that lies between 15 °C and 25 °C. Outside this range, an additional increase of 0.5 % is permitted in each interval of 10 °C.

Permissible effect of disturbances

3

Electromagnetic immunity

3

3

The effect of an electromagnetic disturbance on a gas meter shall be such that:

• — the change in the measurement result is no greater than the critical change value as defined in paragraph 3.1.3, or

• — the indication of the measurement result is such that it cannot be interpreted as a valid result, such as a momentary variation that cannot be interpreted, memorised or transmitted as a measuring result.

3

After undergoing a disturbance, the gas meter shall:

• — recover to operate within MPE, and

• — have all measurement functions safeguarded, and

• — allow recovery of all measurement data present just before the disturbance.

3

The critical change value is the smaller of the two following values:

• — the quantity corresponding to half of the magnitude of the MPE in the upper zone on the measured volume;

• — the quantity corresponding to the MPE on the quantity corresponding to one minute at maximum flowrate.

Effect of upstream-downstream flow disturbances

3

Under installation conditions specified by the manufacturer, the effect of the flow disturbances shall not exceed one third of the MPE.

Durability

4

After an appropriate test, taking into account the period of time estimated by the manufacturer, has been performed, the following criteria shall be satisfied:

Class 1.5 Gas Meters

4

4

The variation of the measurement result after the durability test when compared with the initial measurement result for the flow rates in the range Qt to Qmax shall not exceed the measurement result by more than 2 %.

4

The error of indication after the durability test shall not exceed twice the MPE in paragraph 2.

Class 1.0 Gas Meters

4

4

The variation of the measurement result after the durability test when compared with the initial measurement result shall not exceed one-third of the MPE in paragraph 2.

4

The error of indication after the durability test shall not exceed the MPE in paragraph 2.

Suitability

5

5

A gas meter powered from the mains (AC or DC) shall be provided with an emergency power supply device or other means to ensure, during a failure of the principal power source, that all measuring functions are safeguarded.

5

A dedicated power source shall have a lifetime of at least five years. After 90 % of its lifetime an appropriate warning shall be shown.

5

An indicating device shall have a sufficient number of digits to ensure that the quantity passed during 8,000 hours at Qmax does not return the digits to their initial values.

5

The gas meter shall be able to be installed to operate in any position declared by the manufacturer in its installation instruction.

5

The gas meter shall have a test element, which shall enable tests to be carried out in a reasonable time.

5

The gas meter shall respect the MPE in any flow direction or only in one flow direction clearly marked.

Units

6

Metered quantity shall be displayed in cubic metre, or in kilogram.

PART II — PUTTING INTO USE AND CONFORMITY ASSESSMENT

7

Putting into use

• (a) The measurement of residential use must be performed by means of any Class 1.5 gas meter, or by Class 1.0 gas meters which have a Qmax/Qmin ratio equal to or greater than 150.

• (b) Measurement of commercial and/or light industrial use must be performed by any Class 1.0 or Class 1.5 gas meter.

• (c) The person responsible for installing a gas meter must have regard to the requirements under paragraphs 1.2 and 1.3 of Part I of this Schedule and must ensure that the gas meter is appropriate for the accurate measurement of consumption that is foreseen or foreseeable.

CONFORMITY ASSESSMENT The conformity assessment procedures specified in the modules in Schedule 1B applicable to gas meters that the manufacturer can choose between are:

• (a) B and F;

• (b) B and D; or

• (c) H1.

SCHEDULE 1E — ACTIVE ELECTRICAL ENERGY METERS (MI-003) (Annex V to the Directive)

The relevant requirements of Schedule 1A, the specific requirements of this Schedule and the conformity assessment procedures listed in this Schedule, apply to active electrical energy meters.

Accuracy

1

The manufacturer shall specify the class index of the meter. The class indices are defined as: Class A, B and C.

Rated operating conditions

2

The manufacturer shall specify the rated operating conditions of the meter; in particular:

MPEs

3

The effects of the various measurands and influence quantities (a, b, c,…) are evaluated separately, all other measurands and influence quantities being kept relatively constant at their reference values. The error of measurement, that shall not exceed the MPE stated in Table 2, is calculated as:

4

Permissible effect of disturbances

4

General

Effect of disturbances of long duration

4

In the case of electromechanical electricity meters, no critical change values are defined for harmonic contents in the current circuits and for DC and harmonics in the current circuit.

Permissible effect of transient electromagnetic phenomena

4

4

The effect of an electromagnetic disturbance on an electrical energy meter shall be such that during and immediately after a disturbance:

and in reasonable time after the disturbance the meter shall:

• — recover to operate within the MPE limits, and

• — have all measurement functions safeguarded, and

• — allow recovery of all measurement data present prior to the disturbance, and

• — not indicate a change in the registered energy of more than the critical change value.

4

For overcurrent the critical change value is 1.5 %.

Suitability

5

5

Below the rated operating voltage the positive error of the meter shall not exceed 10 %.

5

The display of the total energy shall have a sufficient number of digits to ensure that when the meter is operated for 4,000 hours at full load (I = Imax, U = Uₙ and PF = 1) the indication does not return to its initial value and shall not be able to be reset during use.

5

In the event of loss of electricity in the circuit, the amounts of electrical energy measured shall remain available for reading during a period of at least 4 months.

Running with no load

5

When the voltage is applied with no current flowing in the current circuit (current circuit shall be open circuit), the meter shall not register energy at any voltage between 0.8 ∙ Uₙ and 1.1 Uₙ.

Starting

5

The meter shall start and continue to register at Uₙ, PF = 1 (polyphase meter with balanced loads) and a current which is equal to Ist.

Units

6

The electrical energy measured shall be displayed in kilowatt-hours or in megawatt-hours.

Putting into use

7

• (a) Subject to sub-paragraph (b), measurement may be performed by means of any active electrical energy meter provided that the temperature range to which an active electrical energy meter is exposed is not wider than the range specified by the manufacturer in relation to that active electrical energy meter in accordance with paragraph 1.3.1 and Table 1 in Schedule 1A to these Regulations.

• (b) Class A active electrical energy meters may not be used when operating outside the temperature range of an upper temperature limit of 30°C to a lower temperature limit of 5°C.

• (c) The person responsible for installing the active electrical energy meter must determine the correct current range and assess the climatic environment.

SCHEDULE 1F — MEASURING SYSTEMS FOR THE CONTINUOUS AND DYNAMIC MEASUREMENT OF QUANTITIES OF LIQUIDS OTHER THAN WATER (MI-005) (Annex VII to the Directive)

The relevant essential requirements of Schedule 1A, the specific requirements of this Schedule and the conformity assessment procedures listed in this Schedule, apply to measuring systems intended for the continuous and dynamic measurement of quantities (volumes or masses) of liquids other than water. If appropriate, the terms ‘volume, and L’ in this Schedule can be read as: ‘mass and kg’.

Rated operating conditions

1

The manufacturer shall specify the rated operating conditions for the instrument, in particular;

The flowrate range

1

The flowrate ran ge is subject to the following conditions:

• (i) the flowrate range of a measuring system shall be within the flowrate range of each of its elements, in particular the meter.

• (ii) meter and measuring system:

Specific measuring system	Characteristic of liquid	Minimum ratio of Qmax: Qmin
Fuel dispensers	Not Liquefied gases	10: 1
Fuel dispensers	Liquefied gases	5: 1
Measuring system	Cryogenic liquids	5: 1
Measuring systems on pipeline and systems for loading ships	All liquids	Suitable for use
All other measuring systems	All liquids	4: 1

1

The properties of the liquid to be measured by the instrument by specifying the name or type of the liquid or its relevant characteristics, for example:

• — Temperature range;

• — Pressure range;

• — Density range;

• — Viscosity range.

1

The nominal value of the AC voltage supply and/or limits of the DC voltage supply.

1

The base conditions for converted values.

Accuracy classification and maximum permissible errors (MPEs)

2

2

For quantities equal to or greater than 2 litres the MPE on indications is:

2

For quantities less than two litres the MPE on indications is:

2

However, no matter what the measured quantity may be, the magnitude of the MPE is given by the greater of the following two values:

• — the absolute value of the MPE given in Table 2 or Table 3,

• — the absolute value of the MPE for the minimum measured quantity (Emin).

2

For minimum measured quantities greater than or equal to 2 litres the following conditions apply:

2

For minimum measured quantities of less than two litres, the above mentioned condition 1 applies and Emin is twice the value specified in Table 3, and related to line A of Table 2.

Converted indication

2

In the case of a converted indication the MPEs are as in line A of Table 2.

Conversion devices

2

MPEs on converted indications due to a conversion device are equal to ± (A — B), A and B being the values specified in Table 2.

2

The requirement (a) in paragraph 2.6 applies to any calculation, not only conversion.

2

The measuring system shall not exploit the MPEs or systematically favour any party.

Maximum permissible effect of disturbances

3

3

The effect of an electromagnetic disturbance on a measuring system shall be one of the following:

• — the change in the measurement result is not greater than the critical change value as defined in paragraph 3.2, or

• — the indication of the measurement result shows a momentary variation that cannot be interpreted, memorised or transmitted as a measuring result. Furthermore, in the case of an interruptible system, this can also mean the impossibility to perform any measurement, or

• — the change in the measurement result is greater than the critical change value, in which case the measuring system shall permit the retrieval of the measuring result just before the critical change value occurred and cut off the flow.

3

The critical change value is the greater of MPE/5 for a particular measured quantity or Emin.

Durability

4

After an appropriate test, taking into account the period of time estimated by the manufacturer, has been performed, the following criterion shall be satisfied:

Suitability

5

5

For any measured quantity relating to the same measurement, the indications provided by various devices shall not deviate one from another by more than one scale interval where devices have the same scale interval. In the case where the devices have different scale intervals, the deviation shall not be more than that of the greatest scale interval.

5

It shall not be possible to divert the measured quantity in normal conditions of use unless it is readily apparent.

5

Any percentage of air or gas not easily detectable in the liquid shall not lead to a variation of error greater than:

• — 0.5 % for liquids other than potable liquids and for liquids of a viscosity not exceeding 1 mPa.s, or

• — 1 % for potable liquids and for liquids of a viscosity exceeding 1 mPa.s.

Instruments for direct sales

5

5

A measuring system for direct sales shall be provided with means for resetting the display to zero.

5

The display of the quantity on which the transaction is based shall be permanent until all parties in the transaction have accepted the measurement result.

5

Measuring systems for direct sales shall be interruptible.

5

Any percentage of air or gas in the liquid shall not lead to a variation of error greater than the values specified in paragraph 5.3.

Fuel Dispensers

5

5

Displays on fuel dispensers shall not be capable of being reset to zero during a measurement.

5

The start of a new measurement shall be inhibited until the display has been reset to zero.

5

Where a measuring system is fitted with a price display, the difference between the indicated price and the price calculated from the unit price and the indicated quantity shall not exceed the price corresponding to EminHowever this difference need not be less than the smallest monetary value.

Power supply failure

6

A measuring system shall either be provided with an emergency power supply device that will safeguard all measuring functions during the failure of the main power supply device or be equipped with means to save and display the data present in order to permit the conclusion of the transaction in progress and with means to stop the flow at the moment of the failure of the main power supply device.

Putting into use

7

Units of measurement

8

The metered quantity shall be displayed in millilitres, cubic centimetres, litres, cubic metres, grams, kilograms or tonnes.

SCHEDULE 1G — AUTOMATIC WEIGHING INSTRUMENTS (MI-006) (Annex VIII to the Directive)

The relevant essential requirements of Schedule 1A, the specific requirements of this Schedule and the conformity assessment procedures listed in Chapter I of this Schedule, apply to automatic weighing instruments defined below, intended to determine the mass of a body by using the action of gravity on that body.

CHAPTER I — Requirements common to all types of automatic weighing instruments

Rated Operating Conditions

1

The manufacturer shall specify the rated operating conditions for the instrument as follows:

1

For the measurand:

1

For the electrical supply influence quantities:

1

For the mechanical and climatic influence quantities:

1

For other influence quantities (if applicable):

• The rate(s) of operation.

• The characteristics of the product(s) to be weighed.

2

Permissible effect of disturbances — Electromagnetic environment

Suitability

3

3

Means shall be provided to limit the effects of tilt, loading and rate of operation such that maximum permissible errors (MPEs) are not exceeded in normal operation.

3

Adequate material handling facilities shall be provided to enable the instrument to respect the MPEs during normal operation.

3

Any operator control interface shall be clear and effective.

3

The integrity of the display (where present) shall be verifiable by the operator.

3

Adequate zero setting capability shall be provided to enable the instrument to respect the MPEs during normal operation.

3

Any result outside the measurement range shall be identified as such, where a printout is possible.

Conformity assessment

4

The conformity assessment procedures specified in the modules in Schedule 1B applicable to automatic weighing instruments that the manufacturer can choose between are:

• (a) For mechanical systems:

• (i) B and D;

• (ii) B and E;

• (iii) B and F;

• (iv) D1;

• (v) F1;

• (vi) G; or

• (vii) H1.

• (b) For electromechanical instruments:

• (i) B and D;

• (ii) B and E;

• (iii) B and F;

• (iv) G; or

• (v) H1.

• (c) For electronic systems or systems containing software:

• (i) B and D;

• (ii) B and F;

• (iii) G; or

• (iv) H1.

CHAPTER II — Automatic Catchweighers

1

These categories are divided into four accuracy classes:

which shall be specified by the manufacturer.

MPE

2

2

MPE Category Y instruments

Verification scale interval — single interval instruments

2

Verification scale interval — multi-interval instruments

2

Where:

• i = 1, 2, … r

• i = partial weighing range

• r = total number of partial ranges

Measurement Range

3

In specifying the measurement range for class Y instruments the manufacturer shall take account that the minimum capacity shall not be less than:

Dynamic Setting

4

4

The dynamic setting facility shall operate within a load range specified by the manufacturer.

4

When fitted, a dynamic setting facility that compensates for the dynamic effects of the load in motion shall be inhibited from operating outside the load range, and shall be capable of being secured.

Performance Under Influence Factors And Electromagnetic Disturbances

5

5

The MPEs due to influence factors are:

5

For category Y instruments

• — For each load in automatic operation; as specified in Table 1,

• — For static weighing in non-automatic operation; as specified in Table 1.

5

The critical change value due to a disturbance is one verification scale interval.

5

Temperature range:

• — For class Y(I) the minimum range is 5 °C,

• — For class Y(II) the minimum range is 15 °C.

CHAPTER III — Automatic Gravimetric Filling Instruments

Accuracy classes

1

1

The manufacturer shall specify both the reference accuracy class Ref(x) and the operational accuracy class(es) X(x).

1

An instrument type is designated a reference accuracy class, Ref(x), corresponding to the best possible accuracy for instruments of the type. After installation, individual instruments are designated for one or more operational accuracy classes, X(x), having taken account of the specific products to be weighed. The class designation factor (x) shall be ≤ 2, and in the form 1 × 10k, 2 × 10k or 5 × 10k where k is a negative whole number or zero.

1

The reference accuracy class, Ref(x) is applicable for static loads.

1

For the operational accuracy class X(x), X is a regime relating accuracy to load weight and (x) is a multiplier for the limits of error specified for class X(1) in paragraph 2.2.

MPE

2

Static weighing error

2

2

For static loads under rated operating conditions, the MPE for reference accuracy class Ref(x), shall be 0.312 of the maximum permissible deviation of each fill from the average; as specified in Table 5; multiplied by the class designation factor (x).

2

For instruments where the fill may be made up from more than one load (e.g. cumulative or selective combination weighers) the MPE for static loads shall be the accuracy required for the fill as specified in paragraph 2.2 (i.e. not the sum of the maximum permissible deviation for the individual loads).

Deviation from average fill

2

Note:

Error relative to pre-set value (setting error)

2

For instruments where it is possible to pre-set a fill weight; the maximum difference between the pre-set value and the average mass of the fills shall not exceed 0.312 of the maximum permissible deviation of each fill from the average, as specified in Table 4.

Performance Under Influence Factor And Electromagnetic Disturbance

3

3

The MPE due to influence factors shall be as specified in paragraph 2.1.

3

The critical change value due to a disturbance is a change of the static weight indication equal to the MPE as specified in paragraph 2.1 calculated for the rated minimum fill, or a change that would give equivalent effect on the fill in the case of instruments where the fill consists of multiple loads. The calculated critical change value shall be rounded to the next higher scale interval (d).

3

The manufacturer shall specify the value of the rated minimum fill.

CHAPTER IV — Discontinuous Totalisers

1

Accuracy Classes

2

MPEs

Totalisation scale interval

3

The totalisation scale interval (dt) shall be in the range: 0.01 % Max ≤ dt ≤ 0.2 % Max

Minimum Totalised Load (Σmin)

4

The minimum totalised load (Σmin) shall be not less than the load at which the MPE is equal to the totalisation scale interval (dt) and not less than the minimum load as specified by the manufacturer.

Zero Setting

5

Instruments that do not tare weigh after each discharge shall have a zero setting device. Automatic operation shall be inhibited if zero indication varies by:

• — 1 dt on instruments with automatic zero setting device;

• — 0.5 dt on instruments with a semi-automatic, or non-automatic, zero setting device

Operator Interface

6

Operator adjustments and reset function shall be inhibited during automatic operation.

Printout

7

On instruments equipped with a printing device, the reset of the total shall be inhibited until the total is printed. The printout of the total shall occur if automatic operation is interrupted.

Performance under influence factors and electromagnetic disturbances

8

8

The MPEs due to influence factors shall be as specified in Table 6.

8

The critical change value due to a disturbance is one totalisation scale interval for any weight indication and any stored total.

CHAPTER V

Accuracy classes

1

Instruments are divided into three accuracy classes as follows: 0.5; 1; 2.

Measurement Range

2

2

The manufacturer shall specify the measurement range, the ratio between the minimum net load on the weighing unit and the maximum capacity, and the minimum totalised load.

2

The minimum totalised load Σmin shall not be less than

• 800 d for class 0.5,

• 400 d for class 1,

• 200 d for class 2.

MPE

3

Speed of the belt

4

The speed of the belt shall be specified by the manufacturer. For single-speed beltweighers, and variable-speed beltweighers having a manual speed setting control, the speed shall not vary by more than 5 % of the nominal value. The product shall not have a different speed than the speed of the belt.

General Totalisation Device

5

It shall not be possible to reset the general totalisation device to zero.

Performance under influence factors and electromagnetic disturbances

6

6

The MPE due to influence factor, for a load not less than the Σmin, shall be 0.7 times the appropriate value specified in Table 7, rounded to the nearest totalisation scale interval (d).

6

The critical change value due to a disturbance shall be 0.7 times the appropriate value specified in Table 7, for a load equal to Σmin, for the designated class of the beltweigher; rounded up to the next higher totalisation scale interval (d).

CHAPTER VI — Automatic Rail Weighbridges

Accuracy classes

1

Instruments are divided into four accuracy classes as follows: 0.2; 0.5; 1; 2.

MPE

2

2

The MPEs for weighing-in-motion of a single wagon or a total train are shown in Table 8.

2

The MPEs for the weight of coupled or uncoupled wagons weighing-in-motion shall be one of the following values, whichever is the greatest:

• — the value calculated according to Table 8, rounded to the nearest scale interval;

• — the value calculated according to Table 8, rounded to the nearest scale interval for a weight equal to 35 % of the maximum wagon weight (as inscribed on the descriptive markings);

• — one scale interval (d).

2

The MPEs for the weight of train weighing-in-motion shall be one of the following values, whichever is the greatest:

• — the value calculated according to Table 9, rounded to the nearest scale interval;

• — the value calculated according to Table 9, for the weight of a single wagon equal to 35 % of the maximum wagon weight (as inscribed on the descriptive markings) multiplied by the number of reference wagons (not exceeding 10) in the train, and rounded to the nearest scale interval;

• — one scale interval (d) for each wagon in the train, but not exceeding 10 d.

2

When weighing coupled wagons; the errors of not more than 10 % of the weighing results taken from one or more passes of the train may exceed the appropriate MPE given in paragraph 2.2, but shall not exceed twice the MPE.

Scale interval (d)

3

The relationship between the accuracy class and the scale interval shall be as specified in Table 9.

Measurement range

4

4

The minimum capacity shall not be less than 1 t, and not greater than the value of the result of the minimum wagon weight divided by the number of partial weighings.

4

The minimum wagon weight shall not be less than 50 d.

Performance under influence factor and electromagnetic disturbance

5

5

The MPE due to an influence factor shall be as specified in Table 10.

5

The critical change value due to a disturbance is one scale interval.

SCHEDULE 1H — TAXIMETERS (MI-007) (Annex IX to the Directive)

The relevant requirements of Schedule 1A, the specific requirements of this Schedule and the conformity assessment procedures listed in this Schedule apply to taximeters.

1

The taximeter shall be designed to calculate the distance and to measure the duration of a trip.

2

The taximeter shall be designed to calculate and display the fare, incrementing in steps equal to the resolution fixed by the appropriate licensing authority in the operation position ‘Hired’. The taximeter shall also be designed to display the final value for the trip in the operating position ‘Stopped’.

3

A taximeter shall be able to apply the normal calculation modes S and D. It shall be possible to choose between these calculation modes by a secured setting.

4

A taximeter shall be able to supply the following data through an appropriate secured interface(s):

• — operation position: ‘For Hire’, ‘Hired’ or ‘Stopped’;

• — totaliser data according to paragraph 15.1;

• — general information: constant of the distance signal generator, date of securing, taxi identifier, real time, identification of the tariff;

• — fare information for a trip: total charged, fare, calculation of the fare, supplement charge, date, start time, finish time, distance travelled;

• — tariff(s) information: parameters of tariff(s).

5

If relevant, it shall be possible to adjust a taximeter for the constant of the distance signal generator to which it is to be connected and to secure the adjustment.

6

The mechanical environment class that applies is M3.

6

The manufacturer shall specify the rated operating conditions for the instrument, in particular:

• — a minimum temperature range of 80 °C for the climatic environment;

• — the limits of the DC power supply for which the instrument has been designed.

7

The MPE, excluding any errors due to application of the taximeter in a taxi, are:

• — For the time elapsed: ± 0.1 %

• minimum value of mpe: 0.2 s;

• minimum value of mpe: 4 m;

• minimum, including rounding: corresponding to the least significant digit of the fare indication.

PERMISSIBLE EFFECT OF DISTURBANCES

8

Electromagnetic immunity

8

The electromagnetic class that applies is E3.

8

The MPE laid down in paragraph 7 shall also be respected in the presence of an electromagnetic disturbance. POWER SUPPLY FAILURE

9

In case of a reduction of the voltage supply to a value below the lower operating limit as specified by the manufacturer, the taximeter shall:

• — continue to work correctly or resume its correct functioning without loss of data available before the voltage drop if the voltage drop is temporary, i.e. due to restarting the engine;

• — abort an existing measurement and return to the position ‘For Hire’ if the voltage drop is for a longer period.

OTHER REQUIREMENTS

10

The conditions for the compatibility between the taximeter and the distance signal generator shall be specified by the manufacturer of the taximeter.

11

If there is a supplement charge for an extra service, entered by the driver on manual command, this shall be excluded from the fare displayed. However, in that case a taximeter may display temporarily the value of the fare including the supplementary charge.

12

If the fare is calculated according to calculation mode D a taximeter may have an additional display mode in which only the total distance and duration of the trip are displayed in real time.

13

All values displayed for the passenger shall be suitably identified. These values as well as their identification shall be clearly readable under daylight and night conditions.

14

If the fare to be paid or the measures to be taken against fraudulent use can be affected by the choice of functionality from a pre-programmed setting or by free data setting, it shall be possible to secure the instrument settings and data entered.

14

The securing possibilities available in a taximeter shall be such that separate securing of the settings is possible.

14

The provisions in paragraph 8.3 of Schedule 1A apply also to the tariffs.

15

A taximeter shall be fitted with non-resettable totalisers for all of the following values:

• — The total distance travelled by the taxi;

• — The total distance travelled when hired;

• — The total number of hirings;

• — The total amount of money charged as supplements;

• — The total amount of money charged as fare.

15

If disconnected from power, a taximeter shall allow the totalised values to be stored for one year for the purpose of reading out the values from the taximeter to another medium.

15

Adequate measures shall be taken to prevent the display of totalised values from being used to deceive passengers.

16

Automatic change of tariffs is allowed due to the:

• — distance of the trip;

• — duration of the trip;

• — time of the day;

• — date;

• — day of the week.

17

If properties of the taxi are important for the correctness of the taximeter, the taximeter shall provide means to secure the connection of the taximeter to the taxi in which it is installed.

18

For the purpose of testing after installation, the taximeter shall be equipped with the possibility to test separately the accuracy of time and distance measurement and the accuracy of the calculation.

19

A taximeter and its installation instructions specified by the manufacturer shall be such that, if installed according to the manufacturer's instructions, fraudulent alterations of the measurement signal representing the distance travelled are sufficiently excluded.

20

The general essential requirement dealing with fraudulent use shall be fulfilled in such a way that the interests of the customer, the driver, the driver's employer and the fiscal authorities are protected.

21

A taximeter shall be designed so that it can respect the MPEs without adjustment during a period of one year of normal use.

22

The taximeter shall be equipped with a real-time clock by means of which the time of the day and the date are kept, one or both can be used for automatic change of tariffs. The requirements for the real-time clock are:

• — the timekeeping shall have an accuracy of 0.02 %;

• — the correction possibility of the clock shall be not more than 2 minutes per week. Correction for summer and wintertime shall be performed automatically;

• — correction, automatic or manually, during a trip shall be prevented.

23

The values of distance travelled and time elapsed, when displayed or printed in accordance with these Regulations, shall use the following units:

SCHEDULE 1I — MATERIAL MEASURES (MI-008) (Annex X to the Directive)

CHAPTER 1 — Material measures of length

The relevant essential requirements of Schedule 1A, the specific requirements of this Schedule and the conformity assessment procedures listed in this chapter, apply to material measures of length defined below. However, the requirement for the supply of a copy of declarations of conformity may be interpreted as applying to a batch or consignment rather than each individual instrument.

Reference Conditions

1

For tapes of length equal to or greater than 5 metres, the maximum permissible errors (MPEs) are to be met when a tractive force of fifty newtons or other force values as specified by the manufacturer and marked on the tape accordingly, or in the case of rigid or semi-rigid measures no tractive force is needed, is applied.

1

The reference temperature is 20 °C unless otherwise specified by the manufacturer and marked on the measure accordingly.

MPEs

2

The MPE, positive or negative in mm, between two non-consecutive scale marks is (a + bL), where:

• — L is the value of the length rounded up to the next whole metre; and

• — a and b are given in Table 1 below.

Materials

3

Materials used for material measures shall be such that length variations due to temperature excursions up to ± 8 °C about the reference temperature do not exceed the MPE.

3

Measures made from material whose dimensions may alter materially when subjected to a wide range of relative humidity, may only be included in Classes II or III.

Markings

4

The nominal value shall be marked on the measure. Millimetre scales shall be numbered every centimetre and measures with a scale interval greater than 2 cm shall have all scale marks numbered.

CHAPTER II — Capacity serving measures

The relevant essential requirements of Schedule 1A, and the specific requirements and the conformity assessment procedures listed in this chapter, apply to capacity serving measures defined below. However, the requirement for the supply of a copy of declarations of conformity may be interpreted as applying to a batch or consignment rather than each individual instrument. Also, the requirement for the instrument to bear information in respect of its accuracy shall not apply.

Line measure	A capacity serving measure marked with a line to indicate nominal capacity.
Brim measure	A capacity serving measure for which the internal volume is equal to the nominal capacity.
Transfer measure	A capacity serving measure from which it is intended that the liquid is decanted prior to consumption.
Capacity	The capacity is the internal volume for brim measures or internal volume to a filling mark for line measures.

Reference Conditions

1

1

Temperature: the reference temperature for measurement of capacity is 20 °C.

1

Position for correct indication: free standing on a level surface.

MPEs

2

Materials

3

Capacity serving measures shall be made of material which is sufficiently rigid and dimensionally stable to maintain capacity within the MPE.

Shape

4

4

Transfer measures shall be designed so that a change of contents equal to the MPE causes a change in level of at least 2 mm at the brim or filling mark.

4

Transfer measures shall be designed so that the complete discharge of the liquid being measured will not be impeded.

Marking

5

5

The nominal capacity declared shall be clearly and indelibly marked on the measure.

5

Capacity serving measures may also be marked with up to three clearly distinguishable capacities, none of which shall lead to confusion one to the other.

5

All filling marks shall be sufficiently clear and durable to ensure that MPEs are not exceeded in use.

SCHEDULE 1J — EXHAUST GAS ANALYSERS (MI-010) (Annex XII to the Directive)

The relevant requirements of Schedule 1A, the specific requirements of this Schedule and the conformity assessment procedures listed in this Schedule, apply to exhaust gas analysers to the extent that they are also regulated measuring instruments.

Instrument Classes

1

Two classes (0 and I) are being defined for exhaust gas analysers. The relevant minimum measuring ranges for these classes are shown in Table 1.

Rated operating conditions

2

The values of the operating conditions shall be specified by the manufacturer as follows:

2

For the climatic and mechanical influence quantities:

• — a minimum temperature range of 35 °C for the climatic environment;

• — the mechanical environment class that applies is M1.

2

For the electrical power influence quantities:

• — the voltage and frequency range for the AC voltage supply

• — the limits of the DC voltage supply.

2

For the ambient pressure:

Maximum permissible errors (MPEs)

3

The MPEs are defined as follows:

3

For each of the fractions measured, the maximum error value permitted under rated operating conditions according to paragraph 1.1 of Schedule 1A is the greater of the two values shown in Table 2. Absolute values are expressed in % vol or ppm vol, percentage values are percent of the true value.

3

The MPE on lambda calculation is 0.3 %. The conventional true value is calculated according to the formula set out in point 5.3.7.3 of Regulation No 83 of the Economic Commission for Europe of the United Nations (UN/ECE).

Permissible effect of disturbances

4

For each of the volume fractions measured by the instrument, the critical change value is equal to the MPE for the parameter concerned.

5

The effect of an electromagnetic disturbance shall be such that:

• — either the change in the measurement result is not greater than the critical change value laid down in paragraph 4; or

• — the presentation of the measurement result is such that it cannot be taken for a valid result.

Other requirements

6

The resolution shall be equal to or of one order of magnitude higher than the values shown in Table 3.

8

For measuring CO, CO₂ and HC, the instrument, including the specified gas handling system, must indicate 95 % of the final value as determined with calibration gases within 15 seconds after changing from a gas with zero content, e.g. fresh air. For measuring O₂, the instrument under similar conditions must indicate a value differing less than 0.1 % vol from zero within 60 seconds after changing from fresh air to an oxygen-free gas.

9

The components in the exhaust gas, other than the components whose values are subject to the measurement, shall not affect the measurement results by more than the half of the modulus of the MPEs when those components are present in the following maximum volume fractions:

• 6 % vol CO,

• 16 % vol CO₂,

• 10 % vol O₂,

• 5 % vol H₂,

• 0.3 % vol NO,

• 2,000 ppm vol HC (as n-hexane),

water vapour up to saturation.

10

An exhaust gas analyser shall have an adjustment facility that provides operations for zero-setting, gas calibration and internal adjustment. The adjustment facility for zero-setting and internal adjustment shall be automatic.

11

For automatic or semi-automatic adjustment facilities, the instrument shall be unable to make a measurement as long as the adjustments have not been made.

12

An exhaust gas analyser shall detect hydrocarbon residues in the gas handling system. It shall not be possible to carry out a measurement if the hydrocarbon residues, present before any measurement, exceed 20 ppm vol.

13

An exhaust gas analyser shall have a device for automatically recognising any malfunctioning of the sensor of the oxygen channel due to wear or a break in the connecting line.

14

If the exhaust gas analyser is capable to operate with different fuels (e.g. petrol or liquefied gas), there shall be the possibility to select the suitable coefficients for the Lambda calculation without ambiguity concerning the appropriate formula.

SCHEDULE 1K — Declaration of Conformity

Declaration of Conformity (No. XXXX)

1

Instrument model/instrument (product, type, batch or serial number):

2

Name and address of the manufacturer and, where applicable, his authorised representative:

3

This declaration of conformity is issued under the sole responsibility of the manufacturer.

4

Object of the declaration (identification of the instrument allowing traceability; it may, where necessary for the identification of the instrument, include an image):

5

The object of the declaration described above is in conformity with the relevant statutory requirements:

6

References to the relevant designated standards or normative documents used or references to the other technical specifications in relation to which conformity is declared:

7

The approved body (name, number) performed … (description of intervention) and issued the certificate:

8

Additional information:

Transitional provisions relating to UK withdrawal from the EU

2A

• (1) In this regulation—

• (2) Subject to paragraph (3), where a regulated measuring instrument was made available on the market during the pre-exit period, despite the amendments made by Schedule 27 of the Product Safety and Metrology (Amendment etc.) (EU Exit) Regulations 2019, any obligation to which a person was subject under these Regulations as they had effect immediately before IP completion day, continues to have effect as it did immediately before IP completion day, in relation to that regulated measuring instrument.

• (3) Paragraph (2) does not apply to—

• (a) any obligation of any competent authority to inform the European Commission or Member States of any matter; or

• (b) any obligation to take action outside of the United Kingdom in respect of that regulated measuring instrument.

• (4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

• (5) Where paragraph (6) applies to a regulated measuring instrument, regulations 72 and 73 have effect in relation to that instrument, subject to the modifications set out in paragraph (7).

• (6) This paragraph applies to a regulated measuring instrument that has been placed on the market—

• (a) during the pre-exit period; or

• (b) pursuant to Article 41 of the EU withdrawal agreement.

• (7) The modifications referred to in paragraph (5) are that—

• (a) the reference in regulation 72(2)(a) to “UK marking” is to be read as a reference to the CE marking within the meaning of Article 4(22) of the Directive;

• (b) the reference in regulation 72(2)(b) to “M marking” is to be read as a reference to the supplementary metrology marking as described in Article 21(2) of the Directive.

• (c) the reference in regulation 72(2)(c) to “approved body” is to be read as a reference to the body that undertook the conformity assessment procedure in accordance with Article 17 of the Directive;

• (d) the references in regulations 72(3)(b) and 73(3)(b) to “type examination certificate” are to be read as references to an “EU-type examination certificate” issued under the conformity assessment procedure set out under the heading “MODULE B: EU-TYPE EXAMINATION” in Annex II to the Directive; and

• (e) the references in regulations 72(3)(b) and 73(3)(b) to “design examination certificate” are to be read as references to an EU-design examination certificate issued in accordance with the conformity assessment procedure set out under the heading “MODULE H1: CONFORMITY BASED ON FULL QUALITY ASSURANCE PLUS DESIGN EXAMINATION” in Annex II to the Directive.

• (8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

• (9) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Amendments to the Consumer Rights Act 2015

Modifications to the application of the Electricity (Northern Ireland) Order 1992

SCHEDULE A1 — Disqualification and re-qualification marks

Disqualification mark

1

A disqualification mark must have the following form—

Re-qualification mark

2

A re-qualification mark must have the following form—

Further use of UK marking