The Product Safety and Metrology etc. (Amendment etc.) (EU Exit) Regulations 2019
SPECIFIC REQUIREMENTS The manufacturer shall specify the rated operating conditions for the instrument, in particular: (1) The flowrate range of the water. The values for the flowrate range shall fulfil the following conditions: - Q₃/Q₁ ≥ 40 - Q₂/Q₁ = 1.6 - Q₄/Q₃ = 1.25 (2) The temperature range of the water. The values for the temperature range shall fulfil the following conditions: 0.1 °C to at least 30 °C (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. MPE (5) The MPE, positive or negative, on volumes delivered at flowrates between the transitional flowrate (Q₂) (included) and the overload flowrate (Q₄) is: 2 % for water having a temperature ≤ 30 °C, The meter shall not exploit the MPE or systematically favour any party. (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. The meter shall not exploit the MPE or systematically favour any party. Permissible Effect of Disturbances (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. (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, (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. 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. (9) Metered volume shall be displayed in cubic metres. (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. CONFORMITY ASSESSMENT The conformity assessment procedures specified in the modules in Schedule 1B applicable to water meters that the manufacturer can choose between are: (a) B and F; (b) B and D; or (c) H1. SCHEDULE 1D 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. DEFINITIONS
| 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. |
GAS METERS (1) Rated operating conditions The manufacturer shall specify the rated operating conditions of the gas meter, taking into account: (1) The flowrate range of the gas shall fulfil at least the following conditions:
| Class | Qmax/Qmin | Qmax/Qt | Qr/Qmax |
|---|---|---|---|
| 1.5 | ≥ 150 | ≥ 10 | 1.2 |
| 1.0 | ≥ 20 | ≥ 5 | 1.2 |
(1) The temperature range of the gas, with a minimum range of 40 °C. (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. (2) (2) The gas meter shall not exploit the MPEs or systematically favour any party.
| Class | 1.5 | 1.0 |
|---|---|---|
| Qmin ≤ Q < Qt | 3 % | 2 % |
| Qt ≤ Q ≤ Qmax | 1.5 % | 1 % |
(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. (3) (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. (3) Under installation conditions specified by the manufacturer, the effect of the flow disturbances shall not exceed one third of the MPE. (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: (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. (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. (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. (6) Metered quantity shall be displayed in cubic metre, or in kilogram. (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 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. 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 = cosφ = the cosine of the phase difference φ between I and U. |
SPECIFIC REQUIREMENTS (1) The manufacturer shall specify the class index of the meter. The class indices are defined as: Class A, B and C. (2) 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;
| ¹ For Class B electromechanical meters Imin≤ 0.4 ∙ Itr shall apply. | ¹ For Class B electromechanical meters Imin≤ 0.4 ∙ Itr shall apply. | ¹ For Class B electromechanical meters Imin≤ 0.4 ∙ Itr shall apply. | ¹ For Class B electromechanical meters Imin≤ 0.4 ∙ Itr shall apply. |
|---|---|---|---|
| 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 ∙ Itr¹ | ≤ 0.2 ∙ Itr |
| Iₙ | ₌ 20 ∙ Itr | ₌ 20 ∙ Itr | ₌ 20 ∙ Itr |
| Imax | ≥ 1.2 ∙ Iₙ | ≥ 1.2 ∙ Iₙ | ≥ 1.2 ∙ Iₙ |
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: - 0.9 ∙ Uₙ≤ U ≤ 1.1 ∙ Uₙ - 0.98 ∙ fₙ≤ f ≤ 1.02 ∙ fₙ power factor range at least from cosφ = 0.5 inductive to cosφ = 0.8 capacitive.(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: When the meter is operating under varying-load current, the percentage errors shall not exceed the limits given in Table 2.
| Operating temperatures | Operating temperatures | Operating temperatures | Operating temperatures | Operating temperatures | Operating temperatures | Operating temperatures | Operating temperatures | Operating temperatures | Operating temperatures | Operating temperatures | Operating temperatures | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MPEs in percent at rated operating conditions and defined load current levels and operating temperature | MPEs in percent at rated operating conditions and defined load current levels and operating temperature | MPEs in percent at rated operating conditions and defined load current levels and operating temperature | MPEs in percent at rated operating conditions and defined load current levels and operating temperature | MPEs in percent at rated operating conditions and defined load current levels and operating temperature | MPEs in percent at rated operating conditions and defined load current levels and operating temperature | MPEs in percent at rated operating conditions and defined load current levels and operating temperature | MPEs in percent at rated operating conditions and defined load current levels and operating temperature | MPEs in percent at rated operating conditions and defined load current levels and operating temperature | MPEs in percent at rated operating conditions and defined load current levels and operating temperature | MPEs in percent at rated operating conditions and defined load current levels and operating temperature | MPEs in percent at rated operating conditions and defined load current levels and operating temperature | MPEs in percent at rated operating conditions and defined load current levels and operating temperature |
| Operating temperatures | Operating temperatures | Operating temperatures | Operating temperatures | Operating temperatures | Operating temperatures | Operating temperatures | Operating temperatures | Operating temperatures | Operating temperatures | Operating temperatures | Operating temperatures | |
| + 5 °C … + 30 °C | + 5 °C … + 30 °C | + 5 °C … + 30 °C | – 10 °C … + 5 °Cor+ 30 °C … + 40 °C | – 10 °C … + 5 °Cor+ 30 °C … + 40 °C | – 10 °C … + 5 °Cor+ 30 °C … + 40 °C | – 25 °C … – 10 °Cor+ 40 °C … + 55 °C | – 25 °C … – 10 °Cor+ 40 °C … + 55 °C | – 25 °C … – 10 °Cor+ 40 °C … + 55 °C | – 40 °C … – 25 °Cor+ 55 °C … + 70 °C | – 40 °C … – 25 °Cor+ 55 °C … + 70 °C | – 40 °C … – 25 °Cor+ 55 °C … + 70 °C | |
| Meter class | A | B | C | A | B | C | A | B | C | A | B | C |
| Single phase meter; polyphase meter if operating with balanced loads | Single phase meter; polyphase meter if operating with balanced loads | Single phase meter; polyphase meter if operating with balanced loads | Single phase meter; polyphase meter if operating with balanced loads | Single phase meter; polyphase meter if operating with balanced loads | Single phase meter; polyphase meter if operating with balanced loads | Single phase meter; polyphase meter if operating with balanced loads | Single phase meter; polyphase meter if operating with balanced loads | Single phase meter; polyphase meter if operating with balanced loads | Single phase meter; polyphase meter if operating with balanced loads | Single phase meter; polyphase meter if operating with balanced loads | Single phase meter; polyphase meter if operating with balanced loads | Single phase meter; polyphase meter if operating with balanced loads |
| Imin ≤ I < Itr | 3.5 | 2 | 1 | 5 | 2.5 | 1.3 | 7 | 3.5 | 1.7 | 9 | 4 | 2 |
| Itr ≤ I < Imax | 3.5 | 2 | 0 | 4.5 | 2.5 | 1 | 7 | 3.5 | 1.3 | 9 | 4 | 1.5 |
| Polyphase meter if operating with single phase load | Polyphase meter if operating with single phase load | Polyphase meter if operating with single phase load | Polyphase meter if operating with single phase load | Polyphase meter if operating with single phase load | Polyphase meter if operating with single phase load | Polyphase meter if operating with single phase load | Polyphase meter if operating with single phase load | Polyphase meter if operating with single phase load | Polyphase meter if operating with single phase load | Polyphase meter if operating with single phase load | Polyphase meter if operating with single phase load | Polyphase meter if operating with single phase load |
| Itr ≤ I < Imax, see exception below | 4 | 2.5 | 1 | 5 | 3 | 1.3 | 7 | 4 | 1.7 | 9 | 4.5 | 2 |
| For electromechanical polyphase meters the current range for single-phase load is limited to 5Itr ≤ I ≤ Imax | For electromechanical polyphase meters the current range for single-phase load is limited to 5Itr ≤ I ≤ Imax | For electromechanical polyphase meters the current range for single-phase load is limited to 5Itr ≤ I ≤ Imax | For electromechanical polyphase meters the current range for single-phase load is limited to 5Itr ≤ I ≤ Imax | For electromechanical polyphase meters the current range for single-phase load is limited to 5Itr ≤ I ≤ Imax | For electromechanical polyphase meters the current range for single-phase load is limited to 5Itr ≤ I ≤ Imax | For electromechanical polyphase meters the current range for single-phase load is limited to 5Itr ≤ I ≤ Imax | For electromechanical polyphase meters the current range for single-phase load is limited to 5Itr ≤ I ≤ Imax | For electromechanical polyphase meters the current range for single-phase load is limited to 5Itr ≤ I ≤ Imax | For electromechanical polyphase meters the current range for single-phase load is limited to 5Itr ≤ I ≤ Imax | For electromechanical polyphase meters the current range for single-phase load is limited to 5Itr ≤ I ≤ Imax | For electromechanical polyphase meters the current range for single-phase load is limited to 5Itr ≤ I ≤ Imax | For electromechanical polyphase meters the current range for single-phase load is limited to 5Itr ≤ I ≤ Imax |
When a meter operates in different temperature ranges the relevant MPE values shall apply. The meter shall not exploit the MPEs or systematically favour any party.(4) Permissible effect of disturbances (4) General 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 paragraphs 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. (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.
| Critical change values for disturbances of long duration | Critical change values for disturbances of long duration | Critical change values for disturbances of long duration | Critical change values for disturbances of long duration |
|---|---|---|---|
| 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 |
| Disturbance | 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 |
(4) (4) The effect of an electromagnetic disturbance on an electrical energy meter shall be such that during and immediately after a disturbance: — 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. (m being the number of measuring elements of the meter, Un in Volts and Imax in Amps). (4) For overcurrent the critical change value is 1.5 %. (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. (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. (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. (6) The electrical energy measured shall be displayed in kilowatt-hours or in megawatt-hours. (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. CONFORMITY ASSESSMENT The conformity assessment procedures specified in the modules in Schedule 1B applicable to active electrical energy meters that the manufacturer can choose between are: (a) B and F; (b) B and D; or (c) H1. SCHEDULE 1F 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’. 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 regulated 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 regulated 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 conditionsNote: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. |
| Direct indication | |
| Direct indication | Note: |
| Direct indication | 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 (1) The manufacturer shall specify the rated operating conditions for the instrument, in particular; (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. This is without prejudice to the Secretary of State's obligations to require use of a temperature of 15 °C in accordance with section 12(1) of the Finance Act 1993 . (2) (2) For quantities equal to or greater than 2 litres the MPE on indications is:
| Accuracy Class | Accuracy Class | Accuracy Class | Accuracy Class | Accuracy Class | |
|---|---|---|---|---|---|
| Accuracy Class | Accuracy Class | Accuracy Class | Accuracy Class | Accuracy Class | |
| 0.3 | 0.5 | 1.0 | 1.5 | 2.5 | |
| Measuring systems (A) | 0.3 % | 0.5 % | 1.0 % | 1.5 % | 2.5 % |
| Meters (B) | 0.2 % | 0.3 % | 0.6 % | 1.0 % | 1.5 % |
(2) For quantities less than two litres the MPE on indications is:
| Measured volume V | MPE |
|---|---|
| V < 0.1 L | 4 × value in Table 2, applied to 0.1 L |
| 0.1 L ≤ V < 0.2 L | 4 × value in Table 2 |
| 0.2 L ≤ V < 0.4 L | 2 × value in Table 2, applied to 0.4 L |
| 0.4 L ≤ V < 1 L | 2 × value in Table 2 |
| 1 L ≤ V < 2 L | Value in Table 2, applied to 2 L |
(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: 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. (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. (2) In the case of a converted indication the MPEs are as in line A of Table 2. (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 regulated measuring instruments Associated regulated measuring instruments shall have an accuracy at least as good as the values in Table 4:
| MPE on Measurements | Accuracy classes of the measuring system | Accuracy classes of the measuring system | Accuracy classes of the measuring system | Accuracy classes of the measuring system | Accuracy classes of the measuring system |
|---|---|---|---|---|---|
| MPE on Measurements | 0.3 | 0.5 | 1.0 | 1.5 | 2.5 |
| Temperature | ± 0.3 °C | ± 0.5 °C | ± 0.5 °C | ± 0.5 °C | ± 1.0 °C |
| Pressure | Less than 1 MPa: ± 50 kPaFrom 1 to 4 MPa: ± 5 %Over 4 MPa: ± 200 kPa | Less than 1 MPa: ± 50 kPaFrom 1 to 4 MPa: ± 5 %Over 4 MPa: ± 200 kPa | Less than 1 MPa: ± 50 kPaFrom 1 to 4 MPa: ± 5 %Over 4 MPa: ± 200 kPa | Less than 1 MPa: ± 50 kPaFrom 1 to 4 MPa: ± 5 %Over 4 MPa: ± 200 kPa | Less than 1 MPa: ± 50 kPaFrom 1 to 4 MPa: ± 5 %Over 4 MPa: ± 200 kPa |
| Density | ± 1 kg/m³ | ± 1 kg/m³ | ± 2 kg/m³ | ± 2 kg/m³ | ± 5 kg/m³ |
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).(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. (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. (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: 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. (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. However, in the case of a self-service arrangement the scale intervals of the main indicating device on the measuring system and the scale intervals of the self-service device shall be the same and results of measurement shall not deviate one from another. (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. However, the allowed variation shall never be smaller than 1 % of MMQ. This value applies in the case of air or gas pockets. (5) (5) A measuring system for direct sales shall be provided with means for resetting the display to zero. It shall not be possible to divert the measured quantity. (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. (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. (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. (7)
| Accuracy class | Types of Measuring system | Types of Measuring system |
|---|---|---|
| 0.3 | Measuring systems on pipeline | Measuring systems on pipeline |
| 0.5 | All measuring systems if not differently stated elsewhere in this Table, in particular: | All measuring systems if not differently stated elsewhere in this Table, in particular: |
| 0.5 | fuel dispensers (not for liquefied gases), | |
| 0.5 | measuring systems on road tankers for liquids of low viscosity (< 20 mPa.s) | |
| 1.0 | Measuring systems for liquefied gases under pressure measured at a temperature equal to or above – 10 °C | Measuring systems for liquefied gases under pressure measured at a temperature equal to or above – 10 °C |
| 1.0 | Measuring systems normally in class 0.3 or 0.5 but used for liquids | Measuring systems normally in class 0.3 or 0.5 but used for liquids |
| 1.0 | whose temperature is less than – 10 °C or greater than 50 °C | |
| 1.0 | whose dynamic viscosity is higher than 1,000 mPa.s | |
| 1.0 | whose maximum volumetric flowrate is not higher than 20 L/h | |
| 1.5 | Measuring systems for liquefied gases under pressure measured at a temperature below – 10 °C (other than cryogenic liquids) | Measuring systems for liquefied gases under pressure measured at a temperature below – 10 °C (other than cryogenic liquids) |
| 2.5 | Measuring systems for cryogenic liquids (temperature below – 153 °C) | Measuring systems for cryogenic liquids (temperature below – 153 °C) |
(8) The metered quantity shall be displayed in millilitres, cubic centimetres, litres, cubic metres, grams, kilograms or tonnes. CONFORMITY ASSESSMENT The conformity assessment procedures specified in the modules in Schedule 1B applicable to measuring systems for the continuous and dynamic measurement of quantities of liquids other than water that the manufacturer can choose between are: (a) B and F; (b) B and D; (c) H1; or (d) G. SCHEDULE 1G 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. 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 prepackages) or single loads of loose material. |
| 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. |
| Rail-weighbridge | An automatic weighing instrument having a load receptor inclusive of rails for conveying railway vehicles. |
SPECIFIC REQUIREMENTS (1) The manufacturer shall specify the rated operating conditions for the instrument as follows: (1) For the measurand: The measuring range in terms of its maximum and minimum capacity. (1) For the electrical supply influence quantities:
| 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. |
(1) For the mechanical and climatic influence quantities: The minimum temperature range is 30 °C unless specified otherwise in the following chapters of this Schedule. The mechanical environment classes according to Schedule 1A, 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. (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 The required performance and the critical change value are given in the relevant Chapter of this Schedule for each type of instrument. (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. (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. (1) These categories are divided into four accuracy classes: Y(I), Y(II), Y(a) & Y(b) which shall be specified by the manufacturer. (2) (2) MPE Category Y instruments
| Net Load (m) in verification scale intervals (e) | Net Load (m) in verification scale intervals (e) | Net Load (m) in verification scale intervals (e) | Net Load (m) in verification scale intervals (e) | Maximum permissible mean error | Maximum permissible error |
|---|---|---|---|---|---|
| Y(I) | Y(II) | Y(a) | Y(b) | Static | Automatic |
| 0 < m ≤ 50,000 | 0 < m ≤ 5,000 | 0 < m ≤ 500 | 0 < m ≤ 50 | ± 0.5 e | ± 1 e |
| 50,000 < m ≤ 200,000 | 5,000 < m ≤ 20,000 | 500 < m ≤ 2,000 | 50 < m ≤ 200 | ± 1.0 e | ± 1.5 e |
| 200,000 < m | 20,000 < m ≤ 100,000 | 2,000 < m ≤ 10,000 | 200 < m ≤ 1,000 | ± 1.5 | ± 2 e |
(2)
| Accuracy classes | Accuracy classes | Verification scale interval | Number of verification scale intervalsn = Max/e | Number of verification scale intervalsn = Max/e |
|---|---|---|---|---|
| Minimum | Maximum | |||
| 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 | ||
| XIIII | Y(b) | 5 g ≤ e | 100 | 1,000 |
(2) Where:
| ¹ For i = r the corresponding column of Table 2 applies with e replaced by er. | ¹ For i = r the corresponding column of Table 2 applies with e replaced by er. | ¹ For i = r the corresponding column of Table 2 applies with e replaced by er. | ¹ For i = r the corresponding column of Table 2 applies with e replaced by er. |
|---|---|---|---|
| Verification scale interval | Verification scale interval | Number of verification scale intervalsn = Max/e | Number of verification scale intervalsn = Max/e |
| Minimum value¹n = Maxi /e(i+1)For i = r the corresponding column of Table 2 applies with e replaced by er. | Maximum valuen = Maxi /ei | ||
| Y(I) | 0.001 g ≤ ei | 50,000 | |
| Y(II) | 0.001 g ≤ ei≤ 0.05 g | 5,000 | 100,000 |
| 0.1 g ≤ ei | 5,000 | 100,000 | |
| Y(a) | 0.1 g ≤ ei | 500 | 10,000 |
| Y(b) | 5 g ≤ ei | 50 | 1 000 |
- i = 1, 2, … r
- i = partial weighing range
- r = total number of partial ranges (3) 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 garbage weighers | : | 5 e |
(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. (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. (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. (2) (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). (2) Note:
| 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 % |
The calculated deviation of each fill from the average may be adjusted to take account for the effect of material particle size. (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. (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. (1) Accuracy Classes Instruments are divided into four accuracy classes as follows: 0.2; 0.5; 1; 2. (2) MPEs
| Accuracy class | MPE of totalised load |
|---|---|
| 0.2 | ± 0.10 % |
| 0.5 | ± 0.25 % |
| 1 | ± 0.50 % |
| 2 | ± 1.00 % |
(3) The totalisation scale interval (dt) shall be in the range: 0.01 % Max ≤ dt ≤ 0.2 % Max (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. (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 (6) Operator adjustments and reset function shall be inhibited during automatic operation. (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. (8) (8) The MPEs due to influence factors shall be as specified in Table 6.
| 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 |
(8) The critical change value due to a disturbance is one totalisation scale interval for any weight indication and any stored total. (1) Instruments are divided into three accuracy classes as follows: 0.5; 1; 2. (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. Where d is the totalisation scale interval of the general totalisation device. (3)
| Accuracy class | MPE for totalised load |
|---|---|
| 0.5 | ± 0.25 % |
| 1 | ± 0.5 % |
| 2 | ± 1.0 % |
(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. (5) It shall not be possible to reset the general totalisation device to zero. (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). (1) Instruments are divided into four accuracy classes as follows: 0.2; 0.5; 1; 2. (2) (2) The MPEs for weighing-in-motion of a single wagon or a total train are shown in Table 8.
| Accuracy class | MPE |
|---|---|
| 0.2 | ± 0.1 % |
| 0.5 | ± 0.25 % |
| 1 | ± 0.5 % |
| 2 | ± 1.0 % |
(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. (3) The relationship between the accuracy class and the scale interval shall be as specified in Table 9.
| Accuracy class | Scale interval (d) |
|---|---|
| 0.2 | d ≤ 50 kg |
| 0.5 | d ≤ 100 kg |
| 1 | d ≤ 200 kg |
| 2 | d ≤ 500 kg |
(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. (5) (5) The MPE due to an influence factor shall be as specified in Table 10.
| Load (m) in verification scale intervals (d) | MPE |
|---|---|
| 0 < m ≤ 500 | ± 0.5 d |
| 500 < m ≤ 2,000 | ± 1.0 d |
| 2,000 < m ≤ 10,000 | ± 1.5 d |
(5) The critical change value due to a disturbance is one scale interval. SCHEDULE 1H The relevant requirements of Schedule 1A, the specific requirements of this Schedule and the conformity assessment procedures listed in this Schedule apply to taximeters. DEFINITIONS Appropriate Licensing Authority Within this Schedule, “appropriate licensing authority” means – (a) in relation to the area to which the Metropolitan Public Carriage Act 1869 applies, Transport for London; (b) in relation to any other area in England and Wales, the authority responsible for licensing taxis in that area; (c) in relation to Scotland, the district or islands council responsible for licensing taxis in that area; (d) and in relation to Northern Ireland, the Department of the Environment for Northern Ireland. Taximeter A device that works together with a signal generator to make a regulated measuring instrument. 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 (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). Where a device is required to be connected to the interface(s) of a taximeter, it shall be possible, by way of a secured setting, to inhibit automatically the operation of the taximeter for reasons of the non-presence or improper functioning of the required device. (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. RATED OPERATING CONDITIONS (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. MAXIMUM PERMISSIBLE ERRORS (MPEs) (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. The totalised values shall include the values saved according to paragraph 9 under conditions of loss of power supply. (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: Distance travelled: - — kilometres; - — miles. 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 specified in the modules in Schedule 1B applicable to taximeters that the manufacturer can choose between are: (a) B and F; (b) B and D; or (c) H1. SCHEDULE 1I 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. SPECIFIC REQUIREMENTS (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. (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. 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 |
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 |
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.(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. (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. CONFORMITY ASSESSMENT The conformity assessment procedures specified in the modules in Schedule 1B applicable to material measures of length that the manufacturer can choose between are: (a) F1; (b) D1; (c) B and D; (d) H; or (e) G. 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. DEFINITIONS
| 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. |
SPECIFIC REQUIREMENTS (1) (1) Temperature: the reference temperature for measurement of capacity is 20 °C. (1) Position for correct indication: free standing on a level surface. (2)
| Line | Brim | |
|---|---|---|
| Transfer measures | ||
| Transfer measures | ||
| < 100 ml | ± 2 ml | – 0 |
| < 100 ml | ± 2 ml | + 4 ml |
| ≥ 100 ml | ± 3 % | – 0 |
| ≥ 100 ml | ± 3 % | + 6 % |
| Serving measures | ||
| < 200 ml | ± 5 % | – 0 |
| < 200 ml | ± 5 % | + 10 % |
| ≥ 200 ml | ± (5 ml + 2.5 %) | – 0 |
| ≥ 200 ml | ± (5 ml + 2.5 %) | + 10 ml + 5 % |
(3) Capacity serving measures shall be made of material which is sufficiently rigid and dimensionally stable to maintain capacity within the MPE. (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. (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. CONFORMITY ASSESSMENT The conformity assessment procedures specified in the modules in Schedule 1B applicable to capacity serving measures that the manufacturer can choose between are: (a) A2; (b) F1; (c) D1; (d) E1; (e) B and E; (f) B and D; or (g) H. SCHEDULE 1J 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. The volume fractions of the exhaust gas components are expressed as a percentage (% vol) for carbon monoxide (CO), carbon dioxide (CO₂) and oxygen (O₂) and in parts per million (ppm vol) for hydrocarbons (HC). The content of HC has to be expressed as concentration of n-hexane (C₆H₁₄), measured with near-infrared absorption techniques. DEFINITIONS
| Lambda | Lambda is a dimensionless value representative of the burning efficiency of an engine in terms of air/fuel ratio in the exhaust gases. |
|---|---|
SPECIFIC REQUIREMENTS (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.
| Classes and measuring ranges | Classes and measuring ranges |
|---|---|
| Parameter | Classes 0 and I |
| CO fraction | from 0 to 5 % vol |
| CO₂ fraction | from 0 to 16 % vol |
| HC fraction | from 0 to 2,000 ppm vol |
| O₂ fraction | from 0 to 21 % vol |
| λ | from 0.8 to 1.2 |
(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: — the minimum and the maximum values of the ambient pressure are for both classes: pmin ≤ 860 hPa, pmax ≥ 1,060 hPa. (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.
| Parameter | Class 0 | Class I |
|---|---|---|
| MPEs | MPEs | MPEs |
| CO fraction | ± 0.03 % vol± 5 % | ± 0.06 % vol± 5 % |
| CO₂ fraction | ± 0.5 % vol | ± 0.5 % vol |
| ±5 % | ± 5 % | |
| HC fraction | ± 10 ppm vol | ± 12 ppm vol |
| ± 5 % | ± 5 % | |
| O₂ fraction | ± 0.1 % vol | ± 0.1 % vol |
| ± 5 % | ± 5 % |
(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). For this purpose, the values displayed by the instrument are used for calculation. (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. (6) The resolution shall be equal to or of one order of magnitude higher than the values shown in Table 3.
| Resolution | Resolution | Resolution | Resolution | Resolution |
|---|---|---|---|---|
| CO | CO₂ | O₂ | HC | |
| Class O and class I | 0.01 % vol | 0.1 % vol | 0.01 % vol for measurand values below or equal to 4 % vol, otherwise 0.1 % vol. | 1 ppm vol |
The lambda value shall be displayed with a resolution of 0.001. The standard deviation of 20 measurements shall not be greater than one third of the modulus of the MPE for each applicable gas volume fraction.(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. CONFORMITY ASSESSMENT The conformity assessment procedures specified in the modules in Schedule 1B applicable to exhaust gas analysers that the manufacturer can choose between are: (a) B and F; (b) B and D; o (c) H1. SCHEDULE 1K (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: Signed for and on behalf of: (place and date of issue): (name, function) (signature):
Amendment to Schedule 3
50
In Schedule 3 (revocations and transitional and consequential provisions)—
- (a) after paragraph 2, insert—
(2A) (1) In this regulation— “pre-exit period” means the period beginning with the commencement date and ending immediately before IP completion day; (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) Where during the pre-exit period— (a) a regulated measuring instrument has not been placed on the market; and (b) a manufacturer has taken any action under regulation 39 as it had effect immediately before IP completion day in relation to that regulated measuring instrument, that action has effect as if it had been done under regulation 39 as it had effect on and after IP completion day.
- (b) in paragraph 4—
- (i) in sub-paragraphs (4)(a), (4)(b), (6)(c)(i) and (6)(c)(ii), for “Annex IV to the Directive”, substitute “ Schedule 1D to the Measuring Instruments Regulations 2016 ” in each place it occurs;
- (ii) in sub-paragraphs (4)(b), (6)(c)(i) and (6)(c)(ii), for “Annex IV”, substitute “ Schedule 1D to the Measuring Instruments Regulations 2016 ”;
- (c) in paragraph 5—
- (i) in sub-paragraphs (4)(a) and (4)(b) for “Annex IV to the Directive”, substitute “ Schedule 1D to the Measuring Instruments Regulations 2016 ” in each place it occurs;
- (ii) in sub-paragraphs (4)(a) and (4)(b), for “Annex IV”, substitute “ Schedule 1D to the Measuring Instruments Regulations 2016 ” in each place it occurs;
- (d) in paragraphs 6 and 7, for “Annex V to the Directive”, substitute “ Schedule 1E of the Measuring Instruments Regulations 2016 ” in each place it occurs.
Amendment to Schedule 4
51
In Schedule 4 (operational obligations of notified bodies)—
- (a) in paragraphs 3, 4 and 6 for “a notified” substitute “ an approved ”;
- (b) in all places in which it occurs (other than the paragraphs referred to in paragraph 51(a)) including in the heading, for “notified” substitute “ approved ”;
- (c) in paragraph 7—
- (i) for “notifying authority” substitute “ Secretary of State ”; and
- (ii) in subparagraphs (b) and (d) for “notification” substitute “ approval ” in both places in which it occurs;
- (d) in paragraph 8—
- (i) after “bodies”, the second time it occurs, insert “ approved ”;
- (ii) for “this Directive” substitute “ these Regulations ”; and
- (e) in paragraph 9 omit from “convened” to “Directive”.
Amendment to Schedule 5
52
In Schedule 5 (requirements related to notified bodies)—
- (a) in paragraph 1 for “under the national law of an EEA state” substitute “ in the United Kingdom ”;
- (b) in paragraph 5(1) for “1” substitute “ 1B ”;
- (c) in paragraph 6(c)(ii) for “harmonised” substitute “ designated ”;
- (d) in paragraph 6(c)(iii)—
- (i) omit “of Union harmonisation legislation and”;
- (ii) for “national” substitute “ applicable ”;
- (e) in paragraph 9(1) omit from “except” to “carried out”;
- (f) in paragraph 10 for “under the relevant Union harmonisation legislation” substitute “ by the Secretary of State ”; and
- (g) in paragraph 5(2)(c) for “a notified” substitute “ an approved ”;
- (h) in all places in which it occurs, including in the heading, for “notified” substitute “ approved ”.
Amendment to Schedule 6
53
In Schedule 6 (in service requirements for certain regulated measuring instruments in Great Britain), Part 5, paragraph 14 for “the Directive” substitute “ Schedule 1G ”.
SCHEDULE 28 — Amendment of the Recreational Craft Regulations 2017 and related amendment
PART 1 — Amendment to the Recreational Craft Regulations 2017
Introduction
1
The Recreational Craft Regulations 2017 are amended in accordance with paragraphs 2 to 54.
Amendment to regulation 2
2
- (1) Regulation 2 (interpretation) is amended as follows.
- (2) In paragraph (1)—
- (a) omit the definition of “accreditation”;
- (b) omit the definition of “accreditation certificate”;
- (c) after the definition of “adaptor” insert—
“approved body” has the meaning given to it in regulation 55 (approved bodies);
- (d) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- (e) omit the definition of “CE marking”;
- (f) omit the definition of “competent national authority”;
- (g) in the definition of “components” omit “EU”;
- (h) after the definition of “conformity assessment body” insert—
“declaration of conformity” means the declaration required to be drawn up in accordance with regulation 10; “designated standard” has the meaning given to it in regulation 2A;
- (i) omit the definition of “Decision 768/2008”;
- (j) in the definition of the “Directive” at the end insert “ (as it had effect immediately before IP completion day) ”;
- (k) omit the definition of “EU declaration of conformity”;
- (l) omit the definition of “harmonised standard”;
- (m) in the definition of “hull length” for “harmonised” substitute “ designated ”;
- (n) for the definition of “importer” substitute—
“importer” means a person who— (a) is established in the United Kingdom and places a product from a country outside of the United Kingdom on the market; or (b) is established in Northern Ireland and places a product on the market that has been supplied to them for distribution, consumption or use in the course of a commercial activity, whether in return for payment or free of charge, from an EEA state;
- (o) in the definition of “making available on the market” for “EU market” substitute “market of Great Britain”;
- (p) omit the definition of “national accreditation body”;
- (q) omit the definition of “notified body requirements”;
- (r) in the definition of “placing on the market” for “EU market” substitute “market of Great Britain”;
- (s) for the definition of “private importer” substitute—
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