Decree of the Ministry of Industry and Trade No. 32 / 2002 Coll.
Decree of the Ministry of Industry and Trade laying down the requirements for weights higher than the mean accuracy class from 1 mg to 50 kg, marked by EEC mark
Valid
Order
Effective from 21.04.2004
32
DECLARATION
Ministry of Industry and Trade
of 11 January 2002
laying down requirements for weights higher than the mean accuracy class from 1 mg to 50 kg, marked by the EEC mark
The Ministry of Industry and Trade provides pursuant to § 27 of Act No. 505 / 1990 Coll., on Metrology, as amended by Act No. 119 / 2000 Coll., ("the Act ') for the implementation of § 6 (2) of the Act:
(1) This Decree lays down requirements for weights higher than the mean accuracy classes from 1 mg to 50 kg, marked by the EEC mark, hereinafter referred to as "weights'.
(2) This decree shall not apply to weights in metric carats or special weights where they are subject to specific legislation.
The weights may be marked by the EEC type-approval mark and the EEC initial verification mark, the graphic form of which is provided for by a separate legislation, (2) only if they comply with the requirements set out in the Annex which have been verified in accordance with the procedures laid down in the specific legislation.2).
This Regulation shall enter into force on the day of the publication of the sectoral annex to the Protocol to the Europe Agreement establishing an association between the Czech Republic, of the one part, and the European Communities and their Member States, of the other part, on conformity assessment and acceptance of industrial products in the Collection of International Treaties, or on the date of the entry into force of the Treaty of Accession of the Czech Republic to the European Union, if that date is earlier.
Minister:
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Annex to Decree No 32 / 2002 Coll.
Weight requirements
1. DEFINITIONS
1.1. Weight
Physical weight rate whose design and metrological characteristics are determined by shape, size, material, modification, nominal value and maximum leave error.
1.2 Set of weights
A series of weights, usually placed in a cassette, such a combination that allows weighing all loads from the minimum nominal value of the weights to the sum of all weights in the set in a sequence in which the minimum nominal value of the weights in the set is the unit.
The sequence of the weight set is as follows:
(1; 1; 2; 5) .10n kg
(1; 1; 1; 2; 5) .10n kg
(1; 2; 2; 5) .10n kg
(1; 1; 2; 2; 5) .10n kg
In this expression n represents either zero or a whole positive or negative integer.
1.3. Etalon weights
The weights used to check the scales and weights are etalon weights.
2. MEMORANDUM VALUES OF LIABILITIES
The nominal value of the weights shall be 1 x 10n kg or 2 x 10n kg or 5 x 10n kg; in this expression n is either zero or the whole positive or negative number.
3. CONVENTIONAL WEIGHT
3.1. Conventional mass is such a mass of mass in air of 1,2 kg / m3, at a temperature of 20 0C and normal barometric pressure, balanced by a reference mass of 8000 kg / m3, provided that the same units of mass are used.
3.2. The maximum permissible errors referred to in point 4 refer to the conventional weight.
4. MAXIMAL IMPORTED HAIR IN THE FIRST EEC VERIFICATION
4.1 The maximum permissible positive or negative error for each individual weight is given in mg in the table below:
| Jmenovité hodnoty | Třída E1 | Třída E2 | Třída F1 | Třída F2 | Třída M1 |
|---|---|---|---|---|---|
| 50 kg | 25 | 75 | 250 | 750 | 2500 |
| 20 kg | 10 | 30 | 100 | 300 | 1000 |
| 10 kg | 5 | 15 | 50 | 150 | 500 |
| 5 kg | 2,5 | 7,5 | 25 | 75 | 250 |
| 2 kg | 1,0 | 3,0 | 10 | 30 | 100 |
| 1 kg | 0,50 | 1.5 | 5 | 15 | 50 |
| 500 g | 0,25 | 0,75 | 2,5 | 7,5 | 25 |
| 200 g | 0,10 | 0,30 | 1,0 | 3,0 | 10 |
| 100 g | 0.05 | 0,15 | 0,5 | 1,5 | 5 |
| 50 g | 0,030 | 0,10 | 0,30 | 1,0 | 3,0 |
| 20 g | 0,025 | 0,080 | 0,25 | 0,8 | 2,5 |
| 10 g | 0,020 | 0,060 | 0,20 | 0.6 | 2,0 |
| 5 g | 0,015 | 0,050 | 0,15 | 0.5 | 1,5 |
| 2 g | 0,012 | 0,040 | 0,12 | 0,4 | 1,2 |
| 1 g | 0,010 | 0,030 | 0,10 | 0,3 | 1,0 |
| 500 mg | 0,008 | 0,025 | 0,08 | 0,25 | 0,8 |
| 200 mg | 0,006 | 0,020 | 0,06 | 0,20 | 0,6 |
| 100 mg | 0,005 | 0,015 | 0,05 | 0,15 | 0,5 |
| 50 mg | 0,004 | 0,012 | 0,04 | 0,12 | 0,4 |
| 20 mg | 0,003 | 0,010 | 0,03 | 0,10 | 0,3 |
| 10 mg | 0,002 | 0,008 | 0,025 | 0,08 | 0,25 |
| 5 mg | 0,002 | 0,006 | 0,020 | 0,06 | 0,20 |
| 2 mg | 0.002 | 0,006 | 0,020 | 0,06 | 0,20 |
| 1 mg | 0,002 | 0,006 | 0,020 | 0,06 | 0,20 |
5. GENERAL CONSIDERATION
5.1. Weight per gram and weight per gram
5.1.1. The mass of Class M1 shall be the weight of the mean accuracy class.
5.1.2. The weights of other accuracy classes may have outer dimensions of the weights of the mean accuracy class. The weights from 10 kg to 1 g may also be cylindrical or the shape of a slightly chamber cone with the head.
5.1.2.1. The height of the body shall be approximately equal to the mean diameter, the allowed difference between the mean diameter and the height shall be between 3 / 4 and 5 / 4 of this diameter.
5.1.2.2. For all weights the head height shall lie between the mean diameter and half of the mean diameter of the body.
5.1.3. The weights of Class E1, E2 and F1 shall not have a head; can be formed by a simple cylindrical body.
5.1.4 The weights of Class E1 and E2 shall be cast from one piece; other weights may have a cavity closed by the head or by any other appropriate means. The volume of the juicing cavity shall not exceed 1 / 5 of the total volume of the weights.
5.2. Weight per gram and parts per gram
The weight of one gram and the parts of the weights of one gram shall be a multiangular flat sheet or wire, of a suitable shape to facilitate handling.
The shape of the weights shall indicate their nominal value.
Multiangular flat moulds, their shape and values:
triangle (1 - 10 - 100 - 1000) mg
square (2 - 20 - 200) mg
pentagon (5 - 50 - 500) mg
Multiangular wires and their values:
1 segment (1 - 10 - 100 - 1000) mg
2 segments (2 - 20 - 200) mg
5 segments (5 - 50 - 500) mg
Where two or three weights in the set are identical, they shall be distinguished by one or two stars or dots in the case of moulds and one or two turns in the case of wires.
5.3 A mass of 20 kg and 50 kg, other than M1, may be of suitable shape according to the handling method.
6. COMPLIANCE OF THE UNDERTAKINGS
6.1 The load shall be made of metal or metal alloy. The metal or alloy shall be of such quality that, under normal conditions of use, the wear on the weights is negligible due to the maximum permissible errors of its accuracy class.
6.1.1. The mass shall be made of pure metal or alloy of such density that the density deviation of the weights is such that the air density deviation by 10% relative to the specified density (1,2 kg / m3) does not cause an error greater than 1 / 4 of the maximum permissible error.
The metal or alloy of Class E1, E2 and F1 weights shall be non-magnetic.
6.2 Resistance to corrosion and deflection of metal or alloy of rectangular weights of 5 kg to 50 kg of Class M1 shall be at least the same as grey cast iron.
6.3 Class M1 cylindrical weights of nominal values less than or equal to 10 kg shall be made of brass or quality material at least equivalent to brass.
6.4 The characteristics set out in points 6.2 and 6.3 may be obtained by appropriate surface treatment.
_
7.1 All external surfaces of the weights, including the base and edges, shall be completely smooth. The surface of Class E1, E2, F1 and F2 weights shall show no pores to the naked eye and be carefully polished.
The surface of cylindrical weights of Class M1 from 10 kg to 1 kg shall be polished and shall not show porosity during inspection with the naked eye. The surface quality of rectangular masses of 50 kg, 20 kg, 10 kg and 5 kg of M1 shall be comparable to grey cast iron to sand form.
7.2 The surface of single-gram weights and their multiples of classes E1, E2, F1 and F2 may be protected by plating.
7.3 The surface of single-gram weights and their multiples of Class M1 may be protected by appropriate coating.
8. JUSTMENT MATERIALS
The weight of Class F1 and F2 with a juicing cavity shall be justified either by the material from which they are produced or by pure tin or molybdenum.
Class M1 weights may be justified by lead.
9. TAPS
9.1 Pulley or wire weights of a nominal value less than or equal to one gram shall not bear the marking of the nominal value.
9.2. Weights of nominal value equal to or greater than one gram:
- in class E1 and E2, they shall not bear any marking of the nominal value,
- in Class F1, bear only the designation of the nominal value as laid down in paragraph 9.2.1., the marking must be made by means of riveting or engraving,
- in Class F2, they must bear the same inscriptions as for Class F1, supplemented by the letter F,
- in Class M1, bear a numerical indication of the nominal value on the upper surface of the body or on the head followed by the symbol of the unit concerned, either in depth or as relief.
The cylinder mass shall be marked with the letter: M either deepened or performed as relief; the rectangular mass shall be marked with the letter M, which may be carried out by any of these means.
9.2.1 The nominal values of the weights shall be indicated in:
- kilograms for weights of 1 kg or more,
- grams for weights from 1 g to 500 g.
9.2.2 The weights that occur in the series twice or three times shall be distinguished by one or two stars or dots.
10. MARK OF FIRST EEC VERIFICATION
Cassettes containing weights of classes E1, E2, F1 and all cassettes containing gram weights and parts thereof shall be sealed with the mark of the initial EEC verification.
For Class F2 weights, the EEC initial verification mark shall be placed on the cover of the juicing cavity and, where there is no juicing cavity, on the base of the weights. In the case of Class M1 weights of between 1 g and 50 kg, the mark of the initial EEC verification shall be placed on the lead seal of the juicing cavity or, in the case of weights without a juicing cavity on the base.
11. CLAIMING
11.1 Separate weights and series of weights of class E1, E2, F1 and F2 shall be stored in cartridges.
11.2 For Class M1
- a separate weight or series of weights up to 500 g must be stored in cartridges,
- weights having a nominal value of more than 500 g may be stored in cartridges, shelves or individually without protection.
11.3 The cassette lids shall be marked with a class of weights in the cassettes: E1; E2; F1; F2; M1.
1) Decree No. 262 / 2000 Coll., which ensures uniformity and correctness of meters and measurements.
2) Decree No. 332 / 2000 Coll., laying down certain procedures for the approval and verification of certain EEC-marked measuring instruments.
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Regulation Information
| Citation | Decree of the Ministry of Industry and Trade No. 32 / 2002 Coll., laying down requirements for weights higher than the mean accuracy class from 1 mg to 50 kg, marked by EEC mark |
|---|---|
| Regulation Type | Order |
| Author | - |
| Collection | Code of Laws |
| Date of Promulgation | 29.01.2002 |
|---|---|
| Effective from | 21.04.2004 |
| Effective until | - |
| Status | Valid |
The regulation text is for informational purposes only.
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