Decree of the Ministry of Industry and Trade No. 29 / 2002 Coll.
Decree of the Ministry of Industry and Trade laying down requirements for measuring instruments for measuring the volume weight of cereals, marked by EEC mark
Valid
Order
Effective from 21.04.2004
29
DECLARATION
Ministry of Industry and Trade
of 11 January 2002
laying down requirements for measuring instruments for measuring the bulk weight of cereals, 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:
This decree lays down the requirements for measuring instruments used for measuring the bulking weight of cereals, which are marked by the EEC mark.
Apparatus used for measuring the weight of cereals by volume may be marked with an EEC type-approval mark instead of the official marks provided for in the specific legislation1), the graphic form of which is provided for in 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:
Doc.
Annex to Decree No 29 / 2002 Coll.
I. MEASUREMENT INSTRUMENTS USED FOR MEASUREMENT OF CIVIL WEIGHT - ETALONS
1. DEFINITIONS AND BASIC PROVISIONS
1.1 The mass of cereals is the weight ratio expressed in kilograms to the volume expressed in hectolitres determined for each type of grain by measuring using apparatus and methods which comply with the provisions of this decree.
1.2. "Reference" étalon by volume mass is an etalon determined by measurement using a national étalon by volume mass constructed and used in accordance with Parts I and II.
1.3. The reference ethalon by volume of grain is expressed in kilograms per hectolitre to two decimal places.
1.4 State weight of grain by volume must be compared with the international standard in accordance with the Annex at least every 10 years and adjusted using a portable standard of the same type.
1.5 Portable weight of cereals is a device without weighing equipment, but otherwise with exactly the same characteristics as the national ethalons.
1.6 For commercial purposes, the concept of bulk weight of cereals may only be used to describe the characteristics of the grain which have been measured by instruments which comply with the requirements of this decree.
1.7 For the purpose of trade in cereals, the characteristic characteristic of the bulk weight of the grain may be only the bulking weight of the grain, which is defined above.
1.8 The measuring instruments marked with the EEC mark and used in trade to determine the bulking weight of the grain shall comply with the requirements of this decree.
These instruments shall be subject to EEC type-approval, be subjected to EEC initial verification and shall be designed and used in accordance with the conditions laid down in the EEC type-approval certificate. They shall bear EEC marks and marks.
2. REQUIREMENTS FOR CONSTRUCTION
The measuring instruments shall consist of a measuring vessel, hopper, cutting device, weighing device and filling container.
All parts of the apparatus shall be designed perfectly and carefully; all surfaces in contact with cereals shall be smooth and shall be made of stable metal, such as brass, stainless steel, and shall be of sufficient thickness to retain their shape in normal use.
3. CIVIL MEASUREMENT
3.1 The measuring vessel shall have the shape of a vertical cylinder whose upper edge is perpendicular to the axis of the container.
3.2 During filling operation, the measuring vessel is always in the same position under the hopper.
3.3 Above the measuring vessel is a filling ring mounted along the same axis and has the same internal diameter as the measuring vessel. The knife moves between these two parts with a mild will.
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4.1 The hopper consists of a filling part with a closing device and a distributor.
4.2 The hopper shall be shaped as a chamber cone to which the upper cylindrical part is attached and a low narrowing release of the hopper with the closing device.
4.3 The filling container is fixed in such a way that when filling it is vertical and coincides with the measuring vessel axis.
4.4 The divider has a precisely specified shape. It points downwards into a narrowing discharge and its position is adjustable in the vertical direction. His axis matches the axis of the hopper.
5. DEPARTMENT EQUIPMENT
5.1 The cutting device consists of a knife, guide and counterweight.
5.2 The knife is flat, horizontal and does not move when used.
5.3 The guidance device limits the movement of the knife between the lower edge of the filling ring and the upper edge of the measuring vessel.
5.4 The counterweight puts the knife in steady motion to pass through the grain.
5.5 After filling and removing the measuring vessel, the excess grain over the knife in the filling ring is poured into the container.
6. SERIOUS EQUIPMENT
6.1 A measuring vessel full of grain is weighed on an isosceles weighing weight of 50 kg.
6.2 The weight of the weighing platform balances an empty measuring vessel.
7.
7.1 The various parts of the whole device, other than measuring vessels and scales, are fixed to the structure in such a way that the upper edge of the measuring vessel is in a horizontal plane when filling.
7.2 The structure of the equipment is equipped with a lead line with a minimum length of 500 mm or a liberal. This device shall be between the reference marks when the upper edge of the measuring vessel is in the horizontal position when filling.
8. DIMENSIONS OF MEASURING INSTRUMENTS
| Odměrná nádoba | |
| Vnitřní průměr | (295 ±1) mm |
| Objem | (20,00 ±0,01) l |
| Vzdálenost mezi vnitřní spodní lícní plochou nádoby a spodním okrajem dolní výpusti násypky | (500 ±2) mm |
| Vzdálenost mezi nožem a okrajem odměrné nádoby | (0,5 ±0,2) mm |
| Plnicí prstenec | |
| Vnitřní průměr | (295 ±1) mm |
| Násypka | |
| Délka osy horní válcovité části | (120 ±2) mm |
| Délka osy kuželovité části | (240 ±1) mm |
| Délka osy dolní kuželové výpusti | (80,0±0,5) mm |
| Celková délka osy zásobníku | (440±3) mm |
| Vnitřní průměr horní válcovité části | (390 ±1) mm |
| Vnitřní průměr kuželové výpusti trysky | |
| v horní části (g') | (84,5 ±0,5) mm |
| ve spodní části (g") | (86,5 ±0,5) mm |
| Rozdíl g" - g' | (2,0±0,5) mm |
| Rozdělovač | |
| Průměr dříku | (11,0±0,5) mm |
| Talíř: poloměr hrdla | (16,0±0,5) mm |
| výška | (5,0±0,5) mm |
| průměr | (33,0±0,2) mm |
| Odřezávací zařízení | |
| hmotnost protizávaží | (5,0±0,1) kg |
| Plnicí kontejner | |
| objem po kraj | (24,0±0,1) l |
9. MEASURING INDIVIDUAL WEIGHT MEASUREMENT APPARATUS
Legend to drawing
1. Measuring vessel
2. The filling ring and its cone part
3. Loading
4. Flaps and hand wheel
5. Lingerie
6. Insurance
7. Distributor
8. Release of the hopper
9. Knife
10. Guide pulleys knife
11. Shape
12. Safety latch knife
13. Counterweight
14. Guide rail support
15. Trolley lock
16. Wheelbase
17. Container
18. Cover of measuring vessel
19. Construction screws
20. Frame
II. PROCEDURE FOR USE
The apparatus shall be accompanied by a procedure for its use.
The cereals to be measured shall be free of impurities and shall have approximately ambient temperature. It must be dried by air, i.e. in hygroscopic equilibrium with ambient air. For this purpose, it is spread out in a thin layer and left free for about 10 hours before measurement. The relative humidity of the ambient air shall not exceed 60%.
The mass depends on the quantity of grain used and the way it is transported to the filling container. The following procedure should therefore be followed:
Place the measuring vessel 1 (I.9) in the filling position so that its axis matches the axis of filling ring 2 and the hopper 3, turn the lock of trolley 15 so that it locks the measuring vessel in this position by locking the trolley 16. We'll put the knife in its starting position and secure the safety latch on the 12. We set the stadch screw 19 to the justage of frame 20 so that the top edge of the measuring vessel 1 is horizontal during filling.
Now 24 litres of grain is poured into the filling container and dumped into the hopper 3 after it has been checked that the cover 4 of the hopper 8 is in a closed position. Pull back on cover 5 and open the cover 4 (which is then kept in open position with 6 flaps 4) and let the grain flow into measuring container 1 placed on trolley 14. The grain flow is protected from external influences by the conical part of the filling ring 2a. The support of the guide rails 14a prevents deformation of tracks on which the wheels of trolley 14 move.
The excess grain (approximately 4 l), which has been moved to hopper 3 to ensure uniform filling of the measuring vessel, remains in filling ring 2 when the measuring vessel is fully filled. To remove this excess from the measuring vessel 1, remove the pin of the knife 12, which rotates on the spindle fixed on the shape 11 to release the knife 9. The front edge of the knife 9, which is set in motion by the weight of the counterweight 13, is sharp enough to cut the grain at the edge of the measuring vessel 1, which could prevent the normal correct cutting. When the knife reaches the final position, remove the trolley lock 15 and remove the measuring vessel 1 from trolley 14, remove it from the trolley, put the measuring vessel on the scale and weigh its contents to within ± 5 g.
We return knife 9 to its initial position so that the excess grain lying on the knife falls into container 17; scattered grains of grain are directed into container housing measuring vessel 18. After release of Fuse 6 by turning around with a hand wheel 4a, fasten the cover 4.
If further measurements are to be made on the same sample, grain from the measuring vessel should be thoroughly mixed with grain from the container.
We receive the mass in kg / hl when the value The N indicated by the weighing device is divided by 0.2 hl. and the N indicated by the weighing device.
III. TESTING AND APPARATUS OF MEASUREMENT
1. MEASURING DIMENSIONS
The dimensions and volumes referred to in point 8 shall be checked by instruments of adequate accuracy.
2. CALIBRATION MEASUREMENT
The measuring instruments shall be connected to the state etalon and adjusted accordingly by means of a portable etalon instrument.
2.1 For the purpose of this test, pure Manitoba wheat, the grains of which are approximately spherical, is used. It shall be at least 80 kg / hl by volume and be in hygroscopic equilibrium with ambient air. Six measurement operations are carried out in accordance with the guidelines in Section II. If P denotes the measuring instrument to be verified and N shall be measured as follows:
| Porovnávací číslo | 1 | 2 | 3 | 4 | 5 | 6 |
| Sled přístrojů | NP | PN | NP | PN | NP | PN |
2.1.1. Differences between values P and their mean value shall not exceed ± 10 g.
2.1.2. The instrument error is the difference between the mean value of six P values and the mean value of six N data. The maximum permissible error is ± 10 g.
2.1.3. If the maximum permissible errors referred to in point 2.1.1 or 2.1.2 are exceeded, this may be due to the fact that the crop is not sufficiently homogeneous. Therefore, it shall be left spread out for another 10 hours at the measuring site after which the test described in paragraph 2.1 is repeated.
2.1.4. If only the maximum permissible error specified in paragraph 2.1.2 is exceeded, the apparatus shall be adjusted.
The data provided by the apparatus may be changed by adjusting the plate on the distributor 7 to a higher or lower position.
The position of the distributor is changed and the test described in paragraph 2.1 is repeated.
3. SERIOUS EQUIPMENT
3.1. For loads between 10 and 20 kg, the balance error shall not exceed ± 0,01% of the load.
3.2. The sum of errors in the weights used shall not exceed ± 0,02 per cent of their nominal mass.
IV. MEASURING INSTRUMENTS USED FOR MEASUREMENT OF CIVIL WEIGHT
1. The measuring instruments used for measuring the bulking weight of cereals shall have the following characteristics:
(a) are designed and manufactured in such a way as to ensure satisfactory repeatability and reproducibility of measurements;
(b) the maximum permissible error in volume mass is ± 0,005 of the result measured by the etalon apparatus;
(c) the maximum permissible relative error in the volume of the vessel used is ± 0,002;
(d) the maximum permissible relative error of the weighing instrument is ± 0,001;
(e) the difference between each result obtained for a given crop and the mean volumetric mass determined from six consecutive measurements shall not exceed ± 0,003 of this mean value.
2. Each apparatus shall have a clearly visible descriptive label indicating in a legible and unremovable form the following information:
(a) the EEC type-approval mark,
(b) the identification mark or name of the manufacturer;
(c) where appropriate, additional marking from the manufacturer;
(d) identification number and year of manufacture;
(e) the nominal volume of the measuring vessel and either the procedure for use or the reference thereto.
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. 29 / 2002 Coll., laying down requirements for measuring instruments for measuring the volume weight of cereals, 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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