ГЭТ 108-2019 (НИО 253)
Standard name:
- ГЭТ 108-2019 State primary special standard of the unit of angular velocity
Type of measurement:
- Measurements of mechanical quantities
Structural division: name НИО\НИЛ:
- Research Department of Standards in the Fields of Measurement of Motion Parameters, Torque, Force and Gravimetry
Guardian Scientist:
- Pukhov Dmitry Borisovich
Year of creation:
- 1977
Year of re-confirmation:
- 2019
Operating principle:
The standard is based on a method of reproducing angular velocity using a controlled precision electric drive, monitored by a special precision measuring system.
Composition of the standard:
The operation of the standard is ensured by a set of measuring instruments included in its composition:
- Installation for reproducing small angular velocities in the range from 5·10-8 to 2.5·10-4 rad/s;
- A low-speed installation that reproduces a unit of angular velocity (rotational speed) in the range 0,01 - 15 rad/s;
- A high-speed installation that reproduces a unit of angular velocity (rotational speed) in the range 10 – 60 000 rad/s;
- A set of equipment for transferring a unit from a standard to measuring instruments
Main metrological characteristics
| Unit name | Playback range | Error | Uncertainty | ||||
|---|---|---|---|---|---|---|---|
| СКО | НСП | u0A | u0B | u0С | U0 | ||
| Low angular velocity reproduction setup | 5·10-8 – 2.5·10-4 рад/с | S = 1,8·10-9 рад/с | = 1,1·10-9 рад/с | 1,8·10-9 рад/с | 7,8·10-10 рад/с | 1,9·10-9 рад/с | 3,8·10-9 рад/с |
| Low speed installation | 0,01 – 15 рад/с | S0 = 5·10-6 – 5·10-5 | = 10-5 – 10-4 | 5·10-6 – 5·10-5 | 9,1·10-7 – 1,3·10-5 | 5,1·10-6 – 5,2·10-5 | 1·10-5 – 1·10-4 |
Verification diagram:
- Heads the state verification scheme for instruments measuring angular velocity and rotation frequency
Scope of application:
- Astronomy and astronavigation;
- Machine tool building and precision engineering;
- Space and defense technologies, etc.
Results of applying the standard:
- Transfer of the unit to the workers of the standard of units of angular velocity and rotation frequency;
- Providing certification of testing equipment intended for assessing the conformity of defense products;
- Ensuring the determination of metrological characteristics of technical equipment with measuring capabilities, including those for defense purposes.
The total number of measuring instruments traceable ГЭТ 108-2019:
Tens of thousands
Ensuring the uniformity of measurements, participation in the CIPM MRA program:
No comparisons were carried out
PHOTO:
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Installation for reproducing small angular velocities in the range from 5·10-8 to 2.5·10-4 rad/s
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Installation for reproducing small angular velocities in the range from 5·10-8 to 2.5·10-4 rad/s
-
A low-speed installation that reproduces a unit of angular velocity (rotational speed) in the range 0,01 – 15 rad/s
-
A high-speed installation that reproduces a unit of angular velocity in the range 10 – 60 000 rad/s