Measuring standards

NAME OF STANDARDS MEASUREMENT RANGE ERROR
1. National reference standard of unit of length 0.1 to 100 mm ± (0.02÷0.03) μm
2. National reference standard for unit of mass from 1 mg to 20 kg ± (0.03÷1) mg
3. National reference standard for units of time and frequency “5 MHz; 100 MHz; 1 Hz; 5 MHz and 100 MHz, (1 ± 0.2) V” ± 1∙10-12
4. National reference standard for the unit of electrical capacity “from 1000 to 100000 pF” “from 2.0∙10-2 to 2.0∙10-1%”

 

5. National reference standard for the unit of inductance 0.1 μH to 1.0 H ± (0.2÷0.5)%
6. National reference standard of pressure unit 0.02 to 60 MPa (0.2 to 600 bar) 5∙10-4
7. National reference standard for AC voltage unit 0.1÷300 V ± 5∙10-4%
8. National reference standard for unit of flow and quantity of liquid from 0.02 to 200 m3/h 0.3%
9. National reference standard for units of mass fraction of ammonia, hydrocyanic acid, nitrogen dioxide, sulfur dioxide and chlorine in air 0.5 to 20 mg/m3, 2 to 20 mg/m3, 1 to 10 mg/m3, 1 to 100 mg/m3, 0.15 to 1.50 mg/m3

 

“± 8%, ± 5%”
10. National reference standard for spectral directional transmittance and optical density “from 185 to 3300 nm, from -6 to 6 Abs” ± 0.003 Abs
11. National standard of units of kerma in air, exposure dose and their rates of X-ray and gamma radiation “from 7 ∙ 10–9 to 3 ∙ 106 Gy from 7 ∙ 10–10 to 45 Gy/s from 33 to 1250 keV” ± 0.5%
12. National reference standard for temperature unit-Kelvin “from minus 38.8344 °С to 961.78 °С” (0.0002 ÷ 0.01) °С
13. Standard unit of absolute pressure 1 10-8-4 105 Pa 0.310-2 – 0.3 Pa

 

14. Platinum resistance thermometers for reference purposes 0-630.74 °C 0.01 °C
15. Standard unit of pressure 0.007 – 7 MPa 3 10-4 MPa
16. An exemplary force measuring unit 20 – 1000 kN 0.02%
17. Comparator for checking and calibrating gage blocks up to 100 mm 1st rank
18. Sample for photometric measurements 175 — 3300 nm ±0,0003 А