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Measurement Rules

Original Language Title: Mērvienību noteikumi

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Cabinet of Ministers Regulations No. 273 in Riga, 23 March 2010 (pr. No 15 5) measurement rules Issued in accordance with the law "on a uniformity of measurements" 3. the second paragraph of article 1. determines the units used in the Republic of Latvia, including separate measurement ways relevant dimensionless coefficient characteristics and names and spelling, as well as additional indicators.
2. the names of the Units, their explanations and script, as well as prefix to denote decimal multiples and submultiples of the rules set out in annex 1.
3. The provisions set out in annex 1 of the unit of measure applies to measuring instruments used, measurements to the measurements expressed in units and the size of the pointer.
4. in addition to the measurements and size indicators, expressed in annex 1 of these rules in specific units, has allowed the use of additional indicators if: 4.1 additional indicators are one or more measurement and size indicators, expressed in units of measurement not contained in annex 1 to these rules;
4.2. additional pointer to characters which are no larger than the characters, with the corresponding values are expressed in this provision is included in annex 1 in the units.
5. Dimensionless coefficient characteristics and names and spellings of this set of provisions in annex 2.
6. Products and equipment already placed on the market and is in use to this date of entry into force of the provisions, as well as their components and parts are allowed to use the units, which are not included in annex 1 of these rules.
7. Be declared unenforceable in the Cabinet of 31 august 1998, Regulation No 337 "rules on the physical size of the units, their English names and writing" (Latvian journal, 1998, nr. 252).
Informative reference to European Union directives, the regulations include provisions resulting from: 1) of the Council of 20 December 1979, Directive 80/181/EEC on the approximation of the laws of the Member States relating to units of measurement and on the repeal of Directive 71/354/EEC;
2) Council on 18 December 1984 directive 85/1/EEC, amending Directive 80/181/EEC on the approximation of the laws of the Member States relating to units of measurement;
3) Council of 27 November 1989 directive 89/617/EEC amending Directive 80/181/EEC on the approximation of the laws of the Member States relating to units of measurement;
4) of the European Parliament and of the Council of 24 January 2000, the provisions of Directive 1999/103/EC amending Council Directive 80/181/EEC on the approximation of the laws of the Member States relating to units of measurement;
5) of the European Parliament and of the Council of 11 March 2009. directive 2009/3/EC amending Council Directive 80/181/EEC on the approximation of the laws of the Member States relating to units of measurement.
Prime Minister v. Economic Minister Dombrovskis a. camphor annex 1 Cabinet of 23 March 2010 regulations No 273 units of measure used in Latvia, name, explanation and script, as well as prefix to denote decimal multiples and submultiples i. international system of units 1. International measurement system base: no PO box
The size of the Unit name symbol length metre m 1 2 mass kilogram kg time second s 3 4. strength of electric power amps (A) 5. Thermodynamic temperature kelvin K 6. Quantity of substance Mole mol luminous intensity in candelas 7 cd 1.1. length unit of measure – the metre is the path of light in a vacuum in 1/299 792 458 seconds.
1.2. the Mass of the kilogram is the unit of measurement of mass, and it is equal to the mass of the international prototype of the kilogram.
1.3. time-second is a unit of caesium-133 atoms 9 192 631 770 periods of the radiation corresponding to the transition between the two hyperfine at lower levels.
1.4. the strength of the electric power unit – amps have the constant power strength, which, flowing through the two 1 feet away from each other in a vacuum located parallel straight unlimited length very thin round cross-section, creating between these cables 2 x 10-7 Newton per metre of length of the force.
1.5. The thermodynamic temperature, Kelvin, unit of thermodynamic temperature, is the measure of the water triple point temperature 1/273 716 of the thermodynamic part. The definition of this water isotopic composition meets the following quantity proportions: 0.00015576 2 h to 1 h of mol mol 0.0003799 mol, 17 to 16 mol, mol and mol 0.0020052 18 on the 16th.
1.6. the units of quantity of the substance-Mole is the amount of substance in the system in which there are so many elementary particles, how atoms are 0.012 kg carbon-12. Using moles, you must list the particles-atoms, molecules, ions, electrons, other particles, or sets of these particles.
1.7. The luminous intensity unit-candela is the luminous intensity, in a given direction emits monochromatic radiation sources 540 × 1012 Hertz is the frequency and strength of radiation 1/683 Watts per steradian in this direction.
2. the international system of units derived units of measurement: PO box
Size unit of measure expression name symbol in other units of the international system of measurement of the international measurement system base units of Celsius Temperature 1 degree Celsius ° C * 2. Plane angle radian rad m m-1 3 ∙. 3-d angle steradian sr m2 ∙ m-frequency Hertz Hz 2 4. s-1 5. Force Newton N m kg s-2 6 ∙ ∙. Pressure, motor voltage Pascal By N m-2 m-1 ∙ ∙ kg ∙ s-energy 2 7. , work; the quantity of heat Joule J N m ∙ ∙ ∙ kg m2 s-2 8. Power **, radiant flux Watt W J ∙ ∙ ∙ kg m2 s-1 s-3 9. Electricity, electric charge Coulomb C's electric potential A ∙ 10., the potential difference (voltage) volts V W elektrodzinējspēk ∙ ∙ ∙ (A)-1 kg m2 s-3 ∙ A-1 11. Electrical resistance ohm Ω ∙ V ∙ ∙ (A)-1 kg m2 s-3 A-2 12 ∙. Electrical conductivity Siemens S (A) ∙ ∙ V-1 m2 kg-1 ∙ S3 A2 ∙ 13. electrical capacitance farad F ∙ V C-1 m-2 kg-1 ∙ ∙ ∙ s4 A2 14. Magnetic flux Weber Wb ∙ V ∙ ∙ kg m2 s-2 s-1 15 A ∙. Magnetic flow density Tesla T Wb ∙ ∙ kg m-2 s-2, A-1 16 ∙. Inductance Henry H ∙ ∙ the Wb (A)-1 kg m2 s-2 ∙ ∙ A-2 17. Light flow lumen lm cd ∙ Sri cd 18. Lighting in the luxury lx lm m-2 m-2 ∙ ∙ cd
19. Radioactivity (ionizing radiation) becquerel Bq s-1 20. Absorbed dose, kerma, absorbed dose rate gray Gy (J) ∙ ∙ kg m2 s-2 21-1. Equivalent dose the sievert Sv (J) ∙ kg-1 s-2 22 m2 ∙. Catalytic activity katal kat mol ∙ s-1 notes. 1. the Celsius temperature t is defined as the difference t = T-T0 between the two thermodynamic temperatures T and T0 where T0 = 273.15 k. Temperature interval or difference can be expressed either in kelvins or in degrees Celsius. The unit "degree Celsius" is equal to the unit "kelvin".
2. Special power units name volt-ampere (symbol "VA") used to express the apparent AC power, and may (symbol "can") used to express reactive electric power. "Can" is not included in the weight and measures of the General Conference resolutions.
3. the Prefix and symbols specific to denote decimal multiples and submultiples: no PO box
Factor multiples and part name symbol 1.
1024 jota Y 2.
1021 Zeta Z 3.
1018 Exo E 4.
PETA P 1015 5.
1012 Tera T 6.
109 Giga G 7.
106 mega M 8.
103 kilo k 9.
102. the h 10 hekt
Deca da 11 10.
10-1 dec (d) 12.
10-2 cents (c) 13.
10-mil in 3 m 14.
10-6 micro µ 15.
10-9 Nano n 16.
10-12 Pico p 17.
10-15 f femt 18.
10-18 at a 19.
zepto z 10-21 20.
10-24 jokt-y notes. 1. Mass measurement decimal multiples and submultiples names and symbols created by adding a prefix to the word "gram" and its symbol, the symbol "g".
2. If the derived units expressed as a fraction, its decimal multiples and parts can be designated by adding a prefix to units in the meter or the denominator, or both of these parts.
3. in paragraph 3 of this chapter, these prefixes and their symbols can be used in conjunction with point 1 of chapter II of the existing units and symbols, with the names "(metric) degree" or "gone" and the symbol "gon", in relation to chapter II, paragraphs 3 and 4 of the existing units and symbols, with the exception of the millimetre of mercury and its symbol, but a multiple of 102 is called a "hectare".
4. You may not use the compound to more of those prefixes.
II. units of measurement which are not included in the international measurement system and its relationship to the system of Special Units 1 decimal multiples and submultiples names and symbols (units of measure, which are not included in the international measurement system, but are associated with it): size Unit name symbol value volume litre l or L 1 l = 1 dm3 = 10-3 m3/ton Mass t 1 t = 1 Mg = 103 kg pressure , motor voltage bar the bar 1 bar = 105 Pa * notes. 1 litre unit can use either symbols "l" and "L".
2. Unit of measurement included in the International Bureau of weights and measures for the time allowed the unit list.
2. units of measurement that are defined on the basis of the international system of measurement units, but not their decimal multiples or Unit name: size symbol value plane angle rotation speed * 1 = 2 π rad metric degree or gone gone 200 degree = π π rad angle 180 ° 10 minute ' 1 ' = π rad 10800 angle second '' 1 '' = π rad time 648000 minutes min 1 min = 60 s = 3600 h 1 hour h s

24 d 1 d = 86400 s note. * There is no international symbol.
3. units of measurement which are not included in the international measurement system, but are associated with it, and that the values obtained experimentally: the size of the symbol name definition units energy electronvolt eV electronvolt is the kinetic energy, the electron vacuum across the potential difference V 1 Unified atomic mass unit u unified atomic mass unit is equal to the mass of a 12 c atom of the isotope 1/12 part 4. units of measurement that are only permitted in specific sectors name of Units: size symbol value optical strength 1 diopter diopter = 1 m-1 metric carat gemstone weight 1 metric carat = 2 m, 4 kg of agricultural land and building land area out of a 1 a = 102 m2, the linear mass density of the Fibres in the TeX text 1 text = 10-6 kg · m-1 blood pressure and pressure of other body fluids mercury Torr mmHg 1 mmHg = 133.322 Pa effective vents barn b 1 b = 10-28 m2 5. Complex units: units of measure creates Complex, connecting the units mentioned in this annex.
Economic Minister a. camphor annex 2 Cabinet of 23 March 2010. the Regulation No. 273 Dimensionless characteristics and factors of Economy Minister a. camphor