S.I. No. 160/2007 - Legal Metrology (European Conformity Assessment of Measuring Instruments) Regulations 2007

— the definition of the metrological characteristics,

— the reproducibility of the metrological performances of produced measuring instruments when properly adjusted using appropriate intended means, and

— the integrity of the measuring instrument.

• (a) a general description of the measuring instrument;

• (b) conceptual design and manufacturing drawings and plans of components, sub-assemblies, circuits, etc;

• (c) manufacturing procedures to ensure consistent production;

• (d) if applicable, a description of the electronic devices with drawings, diagrams, flowdiagrams of the logic and general software information explaining their characteristics and operation;

• (e) descriptions and explanations necessary for the understanding of paragraphs(b), (c) and(d), including the operation of the measuring instrument;

• (f) a list of the standards and/or normative documents referred to in paragraph (1) of Regulation 8, applied in full or in part;

• (g) descriptions of the solutions adopted to meet the essential requirements referred to in paragraph (1) of Regulation 6 where the standards and/or normative documents referred to in paragraph (1) of Regulation 8 have not been applied;

• (h) results of design calculations, examinations, etc;

• (i) the appropriate test results, where necessary, to demonstrate that the type and/or measuring instruments comply with:

— the requirements of these Regulations and the appropriate specific-instrument regulations under declared rated operating conditions and under specified environmental disturbances,

— the durability specifications for gas and water meters as well as meters for liquids other than water.

• (j) the EC type-examination certificates or EC design examination certificates in respect of measuring instruments containing parts identical to those in the design.

SCHEDULE V CRITERIA TO BE SATISFIED BY NOTIFIED BODIES

The following criteria apply for the designation of bodies in accordance with Regulation 12.

• (a) sound technical and vocational training, covering all conformity assessment tasks for which the body was designated;

• (b) satisfactory knowledge of the rules governing the tasks which it carries out, and adequate experience of such tasks;

• (c) the requisite ability to draw up the certificates, records and reports demonstrating that the tasks have been carried out.

SCHEDULE MI-001 WATER METERS FOR COLD WATER

The relevant requirements of Schedule III, the specific requirements of this Schedule and the conformity assessment procedures listed in this Schedule, apply to water meters intended for the measurement of volumes of clean, cold water in residential, commercial and light industrial use.

DEFINITIONS

Water Meter

An instrument designed to measure, memorise and display the volume at metering conditions of water passing through the measurement transducer.

Minimum Flowrate (Q1)

The lowest flowrate at which the water meter provides indications that satisfy the requirements concerning the maximum permissible errors (MPEs.)

Transitional Flowrate (Q2)

The transitional flowrate is the flowrate value occurring between the permanent and minimum flowrates, at which the flowrate range is divided into two zones, the ‘upper zone’ and the ‘lower zone’. Each zone has a characteristic MPE.

Permanent Flowrate (Q3)

The highest flowrate at which the water meter operates in a satisfactory manner under normal conditions of use, i.e. under steady or intermittent flow conditions.

Overload Flowrate (Q4)

The overload flowrate is the highest flowrate at which the meter operates in a satisfactory manner for a short period of time without deteriorating.

SPECIFIC REQUIREMENTS

Rated Operating Conditions

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

The values for the flowrate range shall fulfil the following conditions:

Q 3 /Q 1 ≥ 10

Q 2 /Q 1 = 1.6

Q 4 /Q 3 = 1.25

Until 30 April 2009, the ratio Q 2 /Q 1 may be: 1.5, 2.5, 4 or 6.3.

The values for the temperature range shall fulfil the following conditions:

30°C to at least 90°C.

The meter may be designed to operate over both ranges.

MPE

2% for water having a temperature ≤ 30°C,

3% for water having a temperature > 30°C.

Permissible Effect of Disturbances

— the change in the measurement result is no greater than the critical change value as defined in 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.

— recover to operate within MPE, and

— have all measurement functions safeguarded, and

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

— 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.

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

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

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

— ±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,

— ±3.5% of the metered volume between Q2 included and Q4 included for water meters intended to meter water with a temperature between 30°C and 90°C.

Suitability

Water meters not designed to measure reverse flow shall either prevent reverse flow or shall withstand an accidental reverse flow without any deterioration or change in metrological properties.

Units of Measurement

CONFORMITY ASSESSMENT

The conformity assessment procedures referred to in Regulation 7 that the manufacturer can choose between are:

B followed by F, or

B followed by D,

or H1.

SCHEDULE MI-002 SPECIFIC REQUIREMENTS FOR GAS METERS AND VOLUME CONVERSION DEVICES

The relevant requirements of Schedule III, the specific requirements of this Schedule and the conformity assessment procedures listed in this Schedule, apply to gas meters and volume conversion devices defined below, intended for residential, commercial and light industrial use.

DEFINITIONS

Gas meter

An instrument designed to measure, memorise and display the quantity of fuel gas (volume or mass) that has passed it.

Conversion device

A device fitted to a gas meter that automatically converts the quantity measured at metering conditions into a quantity at base conditions.

Minimum flowrate (Qmin)

The lowest flowrate at which the gas meter provides indications that satisfy the requirements regarding maximum permissible error (MPE.)

Maximum flowrate (Qmax)

The highest flowrate at which the gas meter provides indications that satisfy the requirements regarding MPE.

Transitional flowrate (Qt)

The transitional flowrate is the flowrate occurring between the maximum and minimum flowrates at which the flowrate range is divided into two zones, the ‘upper zone’ and the ‘lower zone’. Each zone has a characteristic MPE.

Overload Flowrate (Qr)

The overload flowrate is the highest flowrate at which the meter operates for a short period of time without deteriorating.

Base conditions

The specified conditions to which the measured quantity of fluid is converted.

PART I SPECIFIC REQUIREMENTS — GAS METERS

The manufacturer shall specify the rated operating conditions of the gas meter, taking into account:

Class	Qmax/Qmin	Qmax/Qt	Qr/Qmax
1.5	≥ 150	≥ 10	1.2
1.0	≥ 20	≥ 5	1.2

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

— the gas family or group;

— the maximum operating pressure.

Class	1.5	1.0
Qmin ≤ Q < Qt	3%	2%
Qt ≤ Q ≤ Qmax	1.5%	1%

Table 1

When the errors between Qt and Qmax all have the same sign, they shall all not exceed 1% for class 1.5 and 0.5% for Class 1.0.

— the change in the measurement result is no greater than the critical change value as defined in 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.

— recover to operate within MPE, and

— have all measurement functions safeguarded, and

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

— 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.

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

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

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

PART II SPECIFIC REQUIREMENTS — VOLUME CONVERSION DEVICES

A volume conversion device constitutes a sub-assembly of the second type according to the definition of sub-assembly given in Regulation 2.

For a volume conversion device, the essential requirements for the gas meter shall apply, if applicable. In addition, the following requirements shall apply:

The manufacturer shall specify the base conditions for converted quantities.

— 0.5% at ambient temperature 20°C ± 3°C, ambient humidity 60% ± 15%, nominal values for power supply;

— 0.7% for temperature conversion devices at rated operating conditions;

— 1% for other conversion devices at rated operating conditions.

Note: The error of the gas meter is not taken into account.

PART III PUTTING INTO USE AND CONFORMITY ASSESSMENT

Putting into use

• (b) Class 1.5 meters shall be used for measurement of commercial and/or light industrial use.

CONFORMITY ASSESSMENT

The conformity assessment procedures referred to in Regulation 7 that the manufacturer can choose between are—

B followed by F, or

B followed by D, or

H1.

SCHEDULE MI-003 ACTIVE ELECTRICAL ENERGY METERS

The relevant requirements of Schedule III, the specific requirements of this Schedule and the conformity assessment procedures listed in this Schedule, apply to active electrical energy meters intended for residential, commercial and light industrial use.

Note: Electrical energy meters may be used in combination with external instrument transformers, depending upon the measurement technique applied. However, this Schedule covers only electrical energy meters but not instrument transformers.

DEFINITIONS

An active electrical energy meter is a device which measures the active electrical energy consumed in a circuit.

I = the electrical current flowing through the meter;

In = the specified reference current for which the transformer operated meter has been designed;

Ist = the lowest declared value of I at which the meter registers active electrical energy at unity power factor (polyphase meters with balanced load);

Imin = the value of I above which the error lies within maximum permissible errors (MPEs) (polyphase meters with balanced load);

Itr = the value of I above which the error lies within the smallest MPE corresponding to the class index of the meter;

Imax = the maximum value of I for which the error lies within the MPEs;

U = the voltage of the electricity supplied to the meter;

Un = the specified reference voltage;

f = the frequency of the voltage supplied to the meter;

fn = the specified reference frequency;

PF = power factor = cos φ = the cosine of the phase difference φ between I and U.

SPECIFIC REQUIREMENTS

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

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

The values of fn, Un, In, Ist, Imin, Itr and Imax that apply to the meter. For the current values specified, the meter shall satisfy the conditions given in Table 1;

	Class A	Class B	Class C
For direct-connected meters	For direct-connected meters	For direct-connected meters	For direct-connected meters
Ist	≤ 0.05 Itr	≤ 0.04 Itr	≤ 0.04 Itr
Imin	≤ 0.5 Itr	≤ 0.5 Itr	≤ 0.3 Itr
Imax	≥ 50 Itr	≥ 50 Itr	≥ 50 Itr
For transformer-operated meters	For transformer-operated meters	For transformer-operated meters	For transformer-operated meters
Ist	≤ 0.06 Itr	≤ 0.04 Itr	≤ 0.02 Itr
Imin	≤ 0.4 Itr	≤ 0.2 Itr^*)	≤ 0.2 Itr
In	= 20 Itr	= 20 Itr	= 20 Itr
Imax	≥ 1.2 In	≥ 1.2 In	≥ 1.2 In

^*) For Class B electromechanical meters Imin ≤ 0.4 Itr shall apply.

Table 1

The voltage, frequency and power factor ranges within which the meter shall satisfy the MPE requirements are specified in Table 2. These ranges shall recognise the typical characteristics of electricity supplied by public distribution systems.

The voltage and frequency ranges shall be at least:

power factor range at least from cosφ = 0.5 inductive to cosφ = 0.8 capacitive.

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:

Error of measurement = [image omitted]

When the meter is operating under varying-load current, the percentage errors shall not exceed the limits given in Table 2.

For electromechanical polyphase meters the current range for single-phase load is limited to 5Itr ≤ I ≤ Imax

Table 2 — MPEs in percent at rated operating conditions and defined load current levels and operating temperature

When a meter operates in different temperature ranges the relevant MPE values shall apply.

As electrical energy meters are directly connected to the mains supply and as mains current is also one of the measurands, a special electromagnetic environment is used for electricity meters.

The meter shall comply with the electromagnetic environment E2 and the additional requirements in 4.2 and 4.3.

The electromagnetic environment and permissible effects reflect the situation that there are disturbances of long duration which shall not affect the accuracy beyond the critical change values and transient disturbances, which may cause a temporary degradation or loss of function or performance but from which the meter shall recover and shall not affect the accuracy beyond the critical change values.

When there is a foreseeable high risk due to lightning or where overhead supply networks are predominant, the metrological characteristics of the meter shall be protected.

Disturbance	Critical change values in percent for meters of class	Critical change values in percent for meters of class	Critical change values in percent for meters of class
	A	B	C
Reversed phase sequence	1. 5	1. 5	0. 3
Voltage unbalance (only applicable to polyphase meters)	4	2	1
Harmonic contents in the current circuits *	1	0. 8	0. 5
DC and harmonics in the current circuit *	6	3	1. 5
Fast transient bursts	6	4	2
Magnetic fields; HF (radiated RF) electromagnetic field; Conducted disturbances introduced by radio-frequency fields; and Oscillatory waves immunity	3	2	1

• 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.

Table 3

Critical change values for disturbances of long duration

— any output intended for testing the accuracy of the meter does not produce pulses or signals corresponding to an energy of more than the critical change value 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.

The critical change value in kWh is m . Un . Imax . 10-6

(m being the number of measuring elements of the meter, Un in Volts and Imax in Amps).

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.

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.

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

• (a) For residential use, Class A meters may be used. For specified purposes, Class B meters may be required.

• (b) For commercial and / or light industrial use, Class B meters may be used. For specified purposes, Class C meters may be required.

• (c) The current range shall be determined by the distributor 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.

CONFORMITY ASSESSMENT

The conformity assessment procedures referred to in Regulation 7 that the manufacturer can choose between are—

B followed by F, or

B followed by D, or

H1.

SCHEDULE MI-005 MEASURING SYSTEMS FOR THE CONTINUOUS AND DYNAMIC MEASUREMENT OF QUANTITIES OF LIQUIDS OTHER THAN WATER

The relevant essential requirements of Schedule III, 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 as given in Table 1. If appropriate, the terms ‘volume, and L’ in this Schedule can be read as ‘mass and kg’.

DEFINITIONS

Meter

An instrument designed to measure continuously, memorise and display the quantity at metering conditions of liquid flowing through the measurement transducer in a closed, fully charged conduit.

Calculator

A part of a meter that receives the output signals from the measurement transducer(s) and possibly, from associated measuring instruments and displays the measurement results.

Associated measuring instrument

An instrument connected to the calculator for measuring certain quantities which are characteristic of the liquid, with a view to make a correction and/or conversion.

Conversion Device

A part of the calculator which by taking account of the characteristics of the liquid (temperature, density, etc.) measured using associated measuring instruments, or stored in a memory, automatically converts:

— the volume of the liquid measured at metering conditions into a volume at base conditions and/or into mass, or

— the mass of the liquid measured at metering conditions into a volume at metering conditions and/or into a volume at base conditions

Note: A conversion device includes the relevant associated measuring instruments.

Base conditions

The specified conditions to which the measured quantity of liquid at metering conditions is converted.

Measuring System

A system that comprises the meter itself and all devices required to ensure correct measurement or intended to facilitate the measuring operations.

Fuel dispenser

A measuring system intended for the refuelling of motor vehicles, small boats and small aircraft.

Self-service arrangement

An arrangement that allows the customer to use a measuring system for the purpose of obtaining liquid for his own use.

Self-service device

A specific device that is part of a self-service arrangement and which allows one of more measuring systems to perform in this self-service arrangement.

Minimum measured quantity (MMQ)

The smallest quantity of liquid for which the measurement is metrologically acceptable for the measuring system.

Direct indication

The indication, either volume or mass, corresponding to the measure and that the meter is physically capable of measuring.

Note: The direct indication may be converted into another quantity using a conversion device.

Interruptible/non interruptible

A measuring system is considered as interruptible/non interruptible when the liquid flow can/cannot be stopped easily and rapidly.

Flowrate range

The range between the minimum flowrate (Qmin) and maximum flowrate (Qmax).

SPECIFIC REQUIREMENTS

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

The flowrate range 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
—Measuring systems on road tankers for liquid fuel	Liquid fuel or milk	4 : 1
—Measuring systems for milk

Table 1

— Temperature range;

— Pressure range;

— Density range;

— Viscosity range.

Note: Paragraph 1.4 is without prejudice to the Member States’ obligations to require use of a temperature of either 15°C in accordance with Article 3(1) of Council Directive 92/81/EEC of 19 October 1992 on the harmonisation of the structures of excise duties on mineral oil ² or, for heavy fuel oils, LPG and methane, another temperature pursuant to Article 3(2) of that Directive.

1 OJ L 316, 31.10.1992, p. 12. Directive repealed by Directive 2003/96/EC (OJ L 283, 31.10.2003, p. 51).

	Accuracy Class 0.5
Measuring systems (A)	0. 5%
Meters (B)	0. 3%

Table 2

Measured volume V	MPE
V < 0.1 L	4 x value in Table 2, applied to 0.1 L
0. 1 L ≤ V < 0.2 L	4 x value in Table 2
0. 2 L ≤ V < 0.4 L	2 x value in Table 2, applied to 0.4 L
0. 4 L ≤ V < 1 L	2 x value in Table 2
1 L ≤ V < 2 L	Value in Table 2, applied to 2 L

Table 3

— 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).

Condition 1

Emin shall fulfil the condition: Emin ≥ 2 R, where R is the smallest scale interval of the indication device.

Condition 2

Emin is given by the formula: Emin = (2MMQ) x (A/100), where:

— MMQ is the minimum measured quantity,

— A is the numerical value specified in line A of Table 2.

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

Parts of conversion devices that can be tested separately

• (a) Calculator

MPEs on quantities of liquid indications applicable to calculation, positive or negative, are equal to one-tenth of the MPEs as defined in line A of Table 2.

• (b) Associated measuring instruments

Associated measuring instruments shall have an accuracy at least as good as the values in Table 4:

MPE on Measurements for measuring system of 0.5%	MPE on Measurements for measuring system of 0.5%
Temperature	± 0.5°C
Pressure	Less than 1 MPa: ± 50 kPa
	From 1 to 4 MPa: ± 5%
	Over 4 MPa: ± 200 kPa
Density	± 1 kg/m^3

Table 4

These values apply to the indication of the characteristic quantities of the liquid displayed by the conversion device.

• (c) Accuracy for calculating function

The MPE for the calculation of each characteristic quantity of the liquid, positive or negative, is equal to two fifths of the value fixed in (b).

— 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.

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

The variation of the measurement result after the durability test, when compared with the initial measurement result, shall not exceed the value for meters specified in line B of table 2.

— 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.

However, the allowed variation shall never be smaller than 1% of MMQ. This value applies in the case of air or gas pockets.

It shall not be possible to divert the measured quantity.

However this difference need not be less than the smallest monetary value.

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.

7. Putting into use

Accuracy Class	Types of Measuring system
0. 5	— fuel dispensers (not for liquefied gases),
	— measuring systems on road tankers for liquid fuel
	— measuring systems for milk

Table 5

Note: However, the manufacturer may specify a better accuracy for a certain type of measuring system.

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

CONFORMITY ASSESSMENT

The conformity assessment procedures referred to in Regulation 7 that the manufacturer can choose between are—

B followed by F, or

B followed by D, or

H1, or

G.

SCHEDULE MI-006 AUTOMATIC WEIGHING INSTRUMENTS

The relevant essential requirements of Schedule III, 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.

DEFINITIONS

Automatic weighing instrument

An instrument that determines the mass of a product without the intervention of an operator and follows a predetermined programme of automatic processes characteristic of the instrument.

Automatic catchweigher

An automatic weighing instrument that determines the mass of pre-assembled discrete loads (for example pre-packages) or single loads of loose material.

Automatic checkweigher

An automatic catchweigher that subdivides articles of different mass into two or more subgroups according to the value of the difference of their mass and a nominal set-point.

Weight labeller

An automatic catchweigher that labels individual articles with the weight value.

Weight/price labeller

An automatic catchweigher that labels individual articles with the weight value, and price information.

Automatic gravimetric filling instrument

An automatic weighing instrument that fills containers with a predetermined and virtually constant mass of product from bulk.

Discontinuous totaliser (totalising hopper weigher)

An automatic weighing instrument that determines the mass of a bulk product by dividing it into discrete loads. The mass of each discrete load is determined in sequence and summed. Each discrete load is then delivered to bulk.

Continuous totaliser

An automatic weighing instrument that continuously determines the mass of a bulk product on a conveyor belt, without systematic subdivision of the product and without interrupting the movement of the conveyor belt.

SPECIFIC REQUIREMENTS

CHAPTER I Requirements common to all types of automatic weighing instruments

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

The measuring range in terms of its maximum and minimum capacity.

In case of AC voltage supply:	the nominal AC voltage supply, or the AC voltage limits.
In case of DC voltage supply:	the nominal and minimum DC voltage supply, or the DC voltage limits.

The minimum temperature range is 30°C unless specified otherwise in the following chapters of this Schedule.

The mechanical environment classes according to Schedule III, paragraph 1.3.2 are not applicable. For instruments which are used under special mechanical strain, e.g. instruments incorporated into vehicles, the manufacturer shall define the mechanical conditions of use.

— The rate(s) of operation.

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

The required performance and the critical change value are given in the relevant Chapter of this Schedule for each type of instrument.

The conformity assessment procedures referred to in Regulation 7 that the manufacturer can choose between are:

For mechanical systems:

B followed by D, or

B followed by E, or

B followed by F, or

D1, or

F1, or

G, or

H1.

For electromechanical instruments:

B followed by D, or

B followed by E, or

B followed by F, or

G, or

H1.

For electronic systems or systems containing software:

B followed by D, or

B followed by F, or

G, or

H1.

CHAPTER II Automatic Catchweigher

X or Y as specified by the manufacturer.

XI, XII, XIII & XIV and

Y(I), Y(II), Y(a) & Y(b)

which shall be specified by the manufacturer.

1 OJ L 42, 15.2.1975, p. 1. Directive as last amended by Directive 89/676/EEC (OJ L 398, 30.12.1989, p. 18).

2 OJ L 46, 21.2.1976, p. 1. Directive as last amended by the EEA Agreement.

The manufacturer shall specify the factor (x), where (x) shall be ≤ 2 and in the form 1 x 10k, 2 x 10k or 5 x 10k, where k is a negative whole number or zero.

Category Y applies to all other automatic catchweighers.

Table 1

Maximum permissible value for the standard deviation of a class X (x) instrument is the result of the multiplication of the factor (x) by the value in Table 2 below.

Net Load (m)	Maximum permissible standard deviation for class X(1)
m ≤ 50 g	0.48%
50 g < m ≤ 100 g	0.24 g
100 g < m ≤ 200 g	0.24%
200 g < m ≤ 300 g	0.48 g
300 g < m ≤ 500 g	0.16%
500 g < m ≤ 1,000 g	0.8 g
1,000 g < m ≤ 10,000 g	0.08%
10,000 g < m ≤ 15,000 g	8 g
15,000 g < m	0. 053%
For class XI and XII (x) shall be less than 1.	For class XI and XII (x) shall be less than 1.
For class XIII (x) shall be not greater than 1.	For class XIII (x) shall be not greater than 1.
For class XIV (x) shall be greater than 1.	For class XIV (x) shall be greater than 1.

Table 2

Accuracy classes	Accuracy classes	Verification scale interval	Number of verification scale intervals n = Max/e	Number of verification scale intervals n = Max/e
Minimum	Maximum
XI	Y(I)	0.001 g ≤ e	50,000	—
XII	Y(II)	0.001 g ≤ e ≤ 0.05 g	100	100,000
		0.1 g ≤ e	5,000	100,000
XIII	Y(a)	0.1 g ≤ e ≤ 2 g	100	10,000
		5 g ≤ e	500	10,000
XIV	Y(b)	5 g ≤ e	100	1,000

Table 3

Accuracy classes	Accuracy classes	Verification scale interval	Number of verification scale intervals n = Max/e	Number of verification scale intervals n = Max/e
Minimum value^(1) n =Maxi/e(i+1)	Maximum valuen = Maxi/ei
XI	Y(I)	0.001 g ≤ ei	50,000	—
XII	Y(II)	0.001 g ≤ ei ≤ 0.05 g	5,000	100,000
		0.1 g ≤ ei	5,000	100,000
XIII	Y(a)	0.1 g ≤ ei	500	10,000
XIV	Y(b)	5 g ≤ ei	50	1,000

Where: i = 1, 2,... r

i = partial weighing range

r = total number of partial ranges

• (1) For i = r the corresponding column of Table 3 applies with e replaced by er.

Table 4

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

class Y(I):	100 e
class Y(II):	20 e for 0.001 g ≤ e ≤ 0.05 g
	and 50 e for 0.1 g ≤ e
class Y(a):	20 e
class Y(b):	10 e
Scales used for grading,
e.g. postal scales and waste weighers:	5 e

— For automatic operation; as specified in Tables 1 and 2,

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

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

— For static weighing in non-automatic operation; as specified for category X in Table 1.

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

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

CHAPTER III Automatic Gravimetric Filling Instruments

Value of the mass, m (g), of the fills	Maximum permissible deviation of each fill from the average for class X(1)
m ≤ 50	7.2%
50 < m ≤ 100	3.6 g
100 < m ≤ 200	3.6%
200 < m ≤ 300	7.2 g
300 < m ≤ 500	2.4%
500 < m ≤ 1,000	12 g
1,000 < m ≤ 10,000	1.2%
10,000 < m ≤ 15,000	120 g
15,000 < m	0.8%
Note: The calculated deviation of each fill from the average may be adjusted to take account for the effect of material particle size.	Note: The calculated deviation of each fill from the average may be adjusted to take account for the effect of material particle size.

Table 5

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 5.

CHAPTER IV Discontinuous Totalisers

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

Accuracy class	MPE of totalised load
0.2	± 0.10%
0.5	± 0.25%
1	± 0.50%
2	± 1.00%

Table 6

The totalisation scale interval (dt) shall be in the range—

0.01% Max ≤ dt ≤ 0.2% Max

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.

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 adjustments and reset function shall be inhibited during automatic operation.

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.

Load (m) in totalisation scale intervals (dt)	MPE
0 < m ≤ 500	± 0.5 dt
500 < m ≤ 2,000	± 1.0 dt
2,000 < m ≤ 10,000	± 1.5 dt

Table 7

CHAPTER V Continuous Totalisers

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

800 d for class 0.5,

400 d for class 1,

200 d for class 2.

Where d is the totalisation scale interval of the general totalisation device.

Accuracy class	MPE for totalised load
0.5	± 0.25%
1	± 0.5%
2	± 1.0%

Table 8

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.

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

SCHEDULE MI-007 TAXIMETERS

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

DEFINITIONS

Taximeter

A device that works together with a signal generator ⁵ to make a measuring instrument.

1 The distance signal generator is outside the scope of these Regulations.

This device measures duration, calculates distance on the basis of a signal delivered by the distance signal generator.

Additionally, it calculates and displays the fare to be paid for a trip on the basis of the calculated distance and/or the measured duration of the trip.

Fare

The total amount of money due for a trip based on a fixed initial hire fee and/or the length and/or the duration of the trip. The fare does not include a supplement charged for extra services.

Cross-over speed

The speed value found by division of a time tariff value by a distance tariff value.

Normal calculation mode S (single application of tariff)

Fare calculation based on application of the time tariff below the cross-over speed and application of the distance tariff above the cross-over speed.

Normal calculation mode D (double application of tariff)

Fare calculation based on simultaneous application of time tariff and distance tariff over the whole trip.

Operating position

The different modes in which a taximeter fulfils the different parts of its functioning. The operating positions are distinguished by the following indications:

‘For Hire’: The operating position in which the fare calculation is disabled

‘Hired’: The operating position in which the fare calculation takes place on the basis of a possible initial charge and a tariff for distance travelled and/or time of the trip

‘Stopped’: The operating position in which the fare due for the trip is indicated and at least the fare calculation based on time is disabled.

DESIGN REQUIREMENTS

— 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).

National legislation may require certain devices to be connected to the interface(s) of a taximeter. Where such a device is required; it shall be possible, by secured setting, to inhibit automatically the operation of the taximeter for reasons of the non-presence or improper functioning of the required device.

RATED OPERATING CONDITIONS

— 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.

MAXIMUM PERMISSIBLE ERRORS (MPEs)

— For the time elapsed:± 0.1%

minimum value of mpe: 0.2s;

— For the distance travelled:± 0.2%

minimum value of mpe: 4 m;

— For the calculation of the fare:± 0.1%

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

PERMISSIBLE EFFECT OF DISTURBANCES

POWER SUPPLY FAILURE

— 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

— 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.

The totalised values shall include the values saved according to paragraph 9 under conditions of loss of power supply.

— distance of the trip;

— duration of the trip;

— time of the day;

— date;

— day of the week.

— 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.

Distance travelled:

— in the United Kingdom and Ireland: until the date which will be fixed by these Member States according to Article (1)(b) of Directive 80/181/EEC: kilometres or miles;

— in all other Member States: kilometres.

Time elapsed:

— seconds, minutes or hours, as may be suitable; keeping in mind the necessary resolution and the need to prevent misunderstandings.

CONFORMITY ASSESSMENT

The conformity assessment procedures referred to in Regulation 7 that the manufacturer can choose between are:

B followed by F, or

B followed by D, or

H1.

SCHEDULE MI-008A MATERIAL MEASURES of LENGTH

The relevant essential requirements of Schedule III, the specific requirements of this Schedule and the conformity assessment procedures listed in this Schedule, 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.

DEFINITIONS

Material measure of length

An instrument comprising scale marks whose distances are given in legal units of length.

SPECIFIC REQUIREMENTS

Reference Conditions

MPEs

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

— a and b are given in Table 1 below.

When a terminal interval is bounded by a surface, the MPE for any distance beginning at this point is increased by the value c given in Table 1.

Accuracy Class	a (mm)	b	c (mm)
I	0.1	0.1	0.1
II	0.3	0.2	0.2
III	0.6	0.4	0.3
D — special class for dipping tapes^(1) Up to and including 30 m ^(2)	1.5	zero	zero
S — special class for tank strapping tapes For each 30 m length when the tape is supported on a flat surface	1.5	zero	zero

• (1) Applies to the tape/dip weight combinations.

• (2) If the nominal tape length exceeds 30 m, an additional mpe of 0.75 mm shall be permitted for each 30 m of tape length.

Table 1

Dip tapes may also be of Classes I or II in which case for any length between two scale marks, one of which is on the sinker and the other on the tape, the mpe is ± 0.6 mm when application of the formula gives a value of less than 0.6 mm.

The MPE for the length between consecutive scale marks, and the maximum permissible difference between two consecutive intervals, are given in Table 2 below.

Length i of the interval	MPE or difference in millimetres according to accuracy class	MPE or difference in millimetres according to accuracy class	MPE or difference in millimetres according to accuracy class
	I	II	III
i ≤ 1 mm	0. 1	0.2	0.3
1 mm < i ≤ 1 cm	0.2	0.4	0.6

Table 2

Where a rule is of the folding type, the jointing shall be such as not to cause any errors, supplementary to those above, exceeding: 0.3 mm for Class II, and 0.5 mm for Class III.

Materials

Markings

CONFORMITY ASSESSMENT

The conformity assessment procedures referred to in Regulation 7 that the manufacturer can choose between are:

F1, or

D1, or

B followed by D, or

H, or

G.

SCHEDULE MI-008B CAPACITY SERVING MEASURES

The relevant essential requirements of Schedule III, the specific requirements of this Schedule and the conformity assessment procedures listed in this Schedule, 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.

DEFINITIONS

Capacity serving measure

A capacity measure (such as a drinking glass, jug or thimble measure) designed to determine a specified volume of a liquid (other than a pharmaceutical product) which is sold for immediate consumption.

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 be decanted prior to consumption.

Capacity

The capacity is the internal volume for brim measures or internal volume to a filling mark for line measures.

SPECIFIC REQUIREMENTS