On The Basic Units Of Measurement And Other Units

Original Language Title: o základních měřicích jednotkách a ostatních jednotkách

Read the untranslated law here: https://portal.gov.cz/app/zakony/download?idBiblio=49593&nr=264~2F2000~20Sb.&ft=txt

264/2000 Sb.



The DECREE



The Ministry of industry and trade



of 14 June. July 2000,



on the basic units of measurement and the other units and their

labelling



Change: 424/2009 Sb.



The Ministry of industry and trade shall determine in accordance with section 27 of Act No. 505/1990

Coll. of metrology, as amended by Act No. 119/2000 Coll. (hereinafter the "law")

for the implementation of section 2 (2). 1 of the Act:



§ 1



Basic measuring units and other units within the meaning of the Act

the units are listed in the annex to this Decree.



§ 2



Basic measuring unit and other units shall not apply to products and

the devices, which were placed on the market or put into service before the date of

the effectiveness of this Ordinance, and in the case of components or parts of the products and equipment

necessary to supplement or replace components or parts of such products,

and the device.



§ 3



The effectiveness of the



This Decree shall take effect on the date of publication.



Minister:



doc. Ing. Gregr in r.



Annex



SI UNITS AND THEIR DECIMAL MULTIPLES AND PARTS; THE UNITS THAT ARE

DEFINED ON THE BASIS OF SI UNITS BUT ARE NOT MULTIPLES OR DEKADICKÝMI

PARTS OF THESE UNITS; THE UNITS IN WHICH THE VALUES WERE,

DETERMINED EXPERIMENTALLY; UNITS AND NAMES OF UNITS PERMITTED IN ONLY

SPECIALIZED AREAS; COMPOUND UNITS



1.



SI UNITS AND THEIR DECIMAL MULTIPLES AND PARTS



1.1 Basic SI units

+----------------------+-----------------------------------------+

| Quantity | Unit |

| +---------------------+-------------------+

| | The name | The brand |

+----------------------+---------------------+-------------------+

| Length | meter | m |

+----------------------+---------------------+-------------------+

| Weight | kilogram | kg |

+----------------------+---------------------+-------------------+

|Čas | the second | s |

+----------------------+---------------------+-------------------+

| Electric current | Ampere | A |

+----------------------+---------------------+-------------------+

| Thermodynamic temperature | Kelvin | K |

+----------------------+---------------------+-------------------+

| Fabric quantities | MOL | MOL |

+----------------------+---------------------+-------------------+

| The intensity of the | candela | CD |

+----------------------+---------------------+-------------------+



Note:



Definition of the unit of thermodynamic temperature, referred to in the law, by

to the water with a plutonium isotopic assay composition defined by fabric

quantity: 0.00015576 m 2 h per mole of 1 h, 0.0003799 mol mol 16O and 17O on the

0.0020052 mol of 18O per mole of 16O.



(thirteenth CGPM (1967), resolution 4 and 23. CGPM (2007), resolution 10).



1.1.1. Special name and symbol of the unit'S system for temperature

expressing the temperature

+----------------------+-----------------------------------------+

| Quantity | Unit |

| +---------------------+-------------------+

| | The name | The brand |

+----------------------+---------------------+-------------------+

| Celsius temperature | degree Celsius | St C |

+----------------------+---------------------+-------------------+



Celsius temperature t is defined as the difference t = T-T0 between the two

thermodynamic temperatures T and T0 = 273,15 K Interval or difference

the temperature may be expressed either in kelvins or in degrees Celsius.

The unit "degree Celsius" is equal to the unit "kelvin".



1.2 derived SI units



1.2.1 the general rule for the derived SI units



Units derived from SI base units systematically expressed

as algebraic expressions in the form of products of powers of the SI base units

with the numerical factor equal to 1.



1.2.2 Derived units with special names and symbols

+----------------------------- +-------------------------+--------------------------------------+

| Quantity | Unit | Comments |

| +-------------+-----------+---------------+----------------------+

| | The name | The brand | In units | In the basic |

| | | | YOU | SI units |

+----------------------------- +-------------+-----------+---------------+----------------------+

| Plane angle | radian | rad | | m. m-1 |

+----------------------------- +-------------+-----------+---------------+----------------------+

| Solid angle | steradian | SR | | square meters. m-2 |

+----------------------------- +-------------+-----------+---------------+----------------------+

| Frequency | Hertz | Hz | | s-1 |

+----------------------------- +-------------+-----------+---------------+----------------------+

| The force | Newton | N | | m. kg. s-2 |

+----------------------------- +-------------+-----------+---------------+----------------------+

| Pressure, voltage | Pascal | PA | N. m-2 | m-1. kg. s-2 |

+----------------------------- +-------------+-----------+---------------+----------------------+

| Energy, work, quantity | | | | |

| | Joule | J | N. m | M2 kg. s-2 |

+----------------------------- +-------------+-----------+---------------+----------------------+

| 1 performance), the radiant | Watt | W | (J). s-1 | M2 kg. s-3 |

+----------------------------- +-------------+-----------+---------------+----------------------+

| The quantity of electrical energy | | | | |

| electric charge | Coulomb | C | | with the. A |

+----------------------------- +-------------+-----------+---------------+----------------------+

| Electric potential difference | | | | |

electrical potentials, | | | | | |

| electromotive force | Volt | V | W. And-1 | M2 kg. s-3. And-1 |

+----------------------------- +-------------+-----------+---------------+----------------------+

| Electrical resistance | ohm | Omega | In the. And-1 | M2 kg. s-3. And-2 |

+----------------------------- +-------------+-----------+---------------+----------------------+

| Electrical conductivity | Siemens | S | And the. In-1 | m-2. kg-1. S3. A2 |

+----------------------------- +-------------+-----------+---------------+----------------------+

| Electric capacity | farad | F | (C). In-1 | m-2. kg-1. S4. A2 |

+----------------------------- +-------------+-----------+---------------+----------------------+

| Magnetic flux | Weber | WB | In the. with | the M2. kg. s-2. And-1 |

+----------------------------- +-------------+-----------+---------------+----------------------+

| Magnetic induction | Tesla | T | WB. m-2 | kg-2. And-1 |

+----------------------------- +-------------+-----------+---------------+----------------------+

| Inductance | Henry | H | WB. And-1 | M2 kg. s-2. And-2 |

+----------------------------- +-------------+-----------+---------------+----------------------+

| Luminous flux | lumen | LM | the CD. SR | cd |

+----------------------------- +-------------+-----------+---------------+----------------------+

| Lighting | Lux | LX | LM. m-2 | m-2. cd |

+----------------------------- +-------------+-----------+---------------+----------------------+

| Activity (of a radionuclide) | Becquerel | Bq | | s-1 |

+----------------------------- +-------------+-----------+---------------+----------------------+

| Absorbed dose, specific | | | | |

| (by weight) by energy | | | | |

kerma, absorbed by index | benefits | Gray | Gy | (J). kg-1 | M2.-2 |

+----------------------------- +-------------+-----------+---------------+----------------------+

| The dose equivalent | sievert | SV | (J). kg-1 | M2.-2 |

+----------------------------- +-------------+-----------+---------------+----------------------+

| Catalytic activity | katal | Kat | | MOL. s-2 |

+----------------------------- +-------------+-----------+---------------+----------------------+

' |1 ') Special names for the unit of power: the name volt-ampere (symbol "VA"), if used, |

| expresses the apparent power of alternating electric current, and var (symbol "var") |

| If used, the idle power. The unit of the var is not included in the resolutions |

| meeting of the CGPM. |

+----------------------------- -----------------------------------------------------------------+



Units derived from SI base units can be expressed using the

the units specified in point 1.



Derived SI units may be expressed by the special names and brands

listed in the table above; for example, a unit of dynamic viscosity may be

expressed as m-1. kg. s-1 or N. with the. m-2 or Pa. with the.



1.3. Prefixes and their symbols used to designate certain

decimal multiples and submultiples

+---------+----------+----------+---------+-----------+---------+

| Factor | The prefix | The brand | Factor | The prefix | The brand |

+---------+----------+----------+---------+-----------+---------+

| 1024 | Yotta | Y | 10-1 | Deci | d |

+---------+----------+----------+---------+-----------+---------+

| 1021 | zetta | Z | 10-2 | centi | c |

+---------+----------+----------+---------+-----------+---------+

| 1018 | EXA | E | 10-3 | Mili | m |
+---------+----------+----------+---------+-----------+---------+

| 1015 | PETA | P | 10-6 | micro | micro |

+---------+----------+----------+---------+-----------+---------+

| 1012 | Tera | T | 10-9 | Nano | n |

+---------+----------+----------+---------+-----------+---------+

| 109 | Giga | G | 10-12 | piko | p |

+---------+----------+----------+---------+-----------+---------+

| 106 | Mega | M | 10-15 | Femto | f |

+---------+----------+----------+---------+-----------+---------+

| 103 | kilo | k | 10-18 | Atta | a |

+---------+----------+----------+---------+-----------+---------+

| 102 | hecto | h | 10-21 | zepto | z |

+---------+----------+----------+---------+-----------+---------+

| 101 | Quilt | da | 10-24 | yocto-| y |

+---------+----------+----------+---------+-----------+---------+



Names and symbols of decimal multiples and submultiples of the unit weight is created

appending the prefix to the word "gram" and their brands to brand the "g".



Where are derived units expressed as a fraction, to their

decimal multiples and submultiples connection to the unit prefix in the

the numerator or the denominator, or both of these parts.



Compound prefix, it means the prefix, which are created by the merging of

several of the above prefixes should not be used.



1.4. Special authorized names and symbols of decimal multiples and submultiples

SI units

+------------------+---------------------------------------------+

| Quantity | Unit |

| +--------+------------+-----------------------+

| | The name | The brand | The value of |

+------------------+--------+------------+-----------------------+

| Volume | Lite | l or L 1) | 1 l = 1 dm3 = 10-3 m3 |

+------------------+--------+------------+-----------------------+

| Weight | ton | t | 1 t = 1 Mg = 103 kg |

+------------------+--------+------------+-----------------------+

| Pressure, voltage | bar | bar 2) | 1 bar = 105 Pa |

+------------------+--------+------------+-----------------------+



1) for the unit litre it is possible to use two tags: the "l" or "L".



(16. meeting of the CGPM (1979), resolution 5).



2), the units listed in the brochure of the International Bureau of weights and measures between the

units which are allowed temporarily.



Note: the prefixes and their symbols listed in 1.3 may be used in

conjunction with the units and symbols contained in table 1.4.



2.



UNITS WHICH ARE DEFINED ON THE BASIS OF SI UNITS BUT ARE NOT

DEKADICKÝMI MULTIPLES OR PARTS OF THESE UNITS

+-------------+--------------------------------------------------+

| Quantity | Unit |

| +-----------------+--------+-----------------------+

| | The name | The brand | The value of |

+-------------+-----------------+--------+-----------------------+

| Plane angle | circulation * 1)) | ' |1 ' circulation = 2 pi rad |

+-------------+-----------------+--------+-----------------------+

| grad or gon * | * | GON * | pí |

| | | ' |1 ' gon =--rad |

| | | | 200 |

+-------------+-----------------+--------+-----------------------+

| | level | degree | PI |

| | | 1 degree =-|--rad |

| | | | 180 |

+-------------+-----------------+--------+-----------------------+

| angular minute | | minute | PI |

| | | | 1 minute =-----rad |

| | | | 10800 |

+-------------+-----------------+--------+-----------------------+

| |-angle second | second | PI |

| | | | 1 second =------rad |

| | | | 648,000 |

+-------------+-----------------+--------+-----------------------+

| Time | minutes | min | 1 min = 60 s |

+-------------+-----------------+--------+-----------------------+

| | hour | (h) ' |1 ' h = 3 600 with |

+-------------+-----------------+--------+-----------------------+

| | day | 1 d = d | 86 400 s |

+-------------+-----------------+--------+-----------------------+

| 1) mark (*), which are followed by the name or mark of drive |

| indicates that this drive does not appear in the lists drawn up |

| CGPM, CIPM, or BIPM. This is true for the whole of this annex. |

|, and) there is no international brand. |

+----------------------------------------------------------------+



Note: the prefixes listed in 1.3 may be used only in

connection with the names "degree" or "gon" and the symbol "gon".



3.



THE UNITS USED IN THE SI, WHOSE VALUES HAVE BEEN DETERMINED EXPERIMENTALLY

+-----------+---------------------------+------------------------------------+

| | Unit |

| Veličina +--------------+------------+------------------------------------|

| | The name | The brand | The definition |

+-----------+--------------+------------+------------------------------------+

| Energy | the electronvolt | EV | The electronvolt is the kinetic energy |

| | | | which gets the electron pass |

| | | | a potential difference of 1 volt in |

| | | | vacuum |

+-----------+--------------+------------+------------------------------------+

| Weight | Unified | u | The unified atomic mass |

| | Atomic | | a unit equal to 1/12 of the mass |

| | mass | | an atom of the nuclide 12 6 C |

| | Unit | | |

| | | | |

+-----------+--------------+------------+------------------------------------+



Note: the prefixes and their symbols listed in 1.3 may be used in

conjunction with these two units and with their symbols.



4.



UNITS AND NAMES OF UNITS PERMITTED IN SPECIALIZED FIELDS ONLY

+-----------------------+--------------------------------------------------+

| Quantity | Unit |

| +-----------------+--------+-----------------------+

| | The name | The brand | The value of |

+-----------------------+-----------------+--------+-----------------------+

| Optical power | | | |

optical systems | | diopters | | 1 diopters = 1 m-1 |

+-----------------------+-----------------+--------+-----------------------+

| The weight of precious metals | | metric carat = | 1 |

| and stones | Carat | |-4 kg 2.10 |

+-----------------------+-----------------+--------+-----------------------+

| Agricultural area | | | |

and building plots | | AR | and 1 ar = 102 m2 |

+-----------------------+-----------------+--------+-----------------------+

| The weight of the textile | | | |

yarn and outline the ' | ' | | | |

| unit length | TeX | TeX | 1 tex = 10-6 kg m-1 |

+-----------------------+-----------------+--------+-----------------------+

| Blood pressure and other | mm | | |

| body fluids | Mercury | mm Hg | 1 mm Hg = 133.322 Pa |

+-----------------------+-----------------+--------+-----------------------+

| The area of the effective | | | |

| slicer | barn | (b) | 1 b = 10-28 m2 |

+-----------------------+-----------------+--------+-----------------------+



The prefixes and their symbols listed in 1.3 may be used in conjunction with

the above units and symbols, with the exception of the millimetre of mercury and its

the brand. Multiple of 102 aru, however, called a "hectare".



5.



COMPOUND UNITS



The combination of the units listed in chapter I to form compound units.