Cabinet of Ministers Regulations No. 1010 Riga 2006 (19 December. No. 68, § 28) the provisions on the national list of Issued benchmark unit in accordance with the law "on a uniformity of measurements" 5. the second paragraph of article 1. approve the national measurement benchmark list.
2. The national reference of the unit are as follows: no PO box
benchmark name physical size range of measurement uncertainty interval 1.
A set of measures of length URNr.LNE 01 (0.1 ÷ 1000) mm (25 ÷ 43) nm (0.040 ÷ 0.110) µm 2.
Optical scale URNr.LNE 02 (0 ÷ 200) mm 26 nm 3.
Etalonmēr of URNr.LNE a stripe 03 length (0 ÷ 1000) mm 0.008 mm (0 ÷ 20) m + (+ 10-6 1.2 L 0.01) L – length in mm in mm 4.
Etalonplak brings a granite base with Length measuring system URNr.LNE 04-deviation from 0 ÷ 3000 mm of straight 0.2 µm/m 5.
Surface roughness length of etalonmēr in URNr.LNE 05-surface roughness height Ra µm Rz 3.62 1.62 ÷ ÷ 0.058 12.82 µm 5% 6.
Optical interference plane URNr.LNE 06 length-flatness (0 ÷ 200) mm 0.01 µm 7.
Optical Prism faces 24 URNr.LNE 07 plane angle (0 ÷ 360) ° ± 0.10 "8.
Etalonmas of a kilogram with a set of weights of 1 kg Mass URNr.LNE 08 1 ÷ 500 g 1 ÷ 500 mg 10 kg 20 kg 500 kg 0.050 mg (0.0018 ÷ 0.028) mg (0.00040 ÷ 0.0014) mg 1.5 mg mg 2.5 5.0 g 9.
Caesium frequency benchmark URNr.LNE 09 electro magnetic oscillation frequency is 1 MHz, 5 MHz, 10 MHz ± 1.4 10-13 10.
Orlando tour benchmark water triple point temperature of 12 Celsius URNr.LNE 0.01 ° C 0.0001 ° C 11.
Platinum resistance thermocouple Builder URNr.LNE temperature 13 Celsius (-39 ÷ + 420) ° C ± 0.001 ° C 12.
Platinum-platīnrodij thermo electric converter URNr.LNE 14 temperature Celsius (300 ÷ 1200) ° C ± (0.25 ÷ 0.6) ° C 13.
Electrical resistance measurement Kit URNr.LNE electric resistance Ω 0.001 15 ÷ 100 MΩ (1 ± 0.5 to 10-6) mΩ ÷ (1 ± 7 10-6) 14 MΩ.
The Līdzspr of the subject URNr.LNE etalons gum 16 Līdzspr the gums 1.018 V 10 V ± 0.5 15 µV.
The gum and Maiņspr AC URNr.LNE the topic of etalons 16 voltage (0.01 ÷ 1000) g (0.01 ÷ 1000) kHz ± ÷ 80 mV power 2.2 µV (0.01 ÷ 1) A (0.04 ÷ 10) kHz ± 150 nA ÷ 30 16 µA.
The energy and the activity of gamma radiation measuring 18 URNr.LNE activity (0.1 ÷ 106) 3.0 ÷ 5.5% Bq (point sources) 3.0 ÷ 6.5% (spatial) power (0.05 ÷ 2.7) 0.001 MeV 17 MeV.
Dosimeters and the theme of the etalons radiometer URNr.LNE 19 radioactive µGy absorbed dose 1 ÷ 1200 Gy (2.0 ÷ 7.5) absorbed dose capacity 0.1 ÷ 2.2 µGy/h Gy/h 3. Be declared unenforceable in the Cabinet of 31 august 1998, Regulation No 333 "national unit of measure benchmark list" (Latvian journal, 1998, nr. 252).
Prime Minister a. Halloween economic Minister j. Malcolm Editorial Note: the entry into force of the provisions by 23 December 2006.