ГЭТ 15-79 (НИЛ 2202)
Standard name:
- ГЭТ 15-79 State primary standard of the unit of inductance
Type of measurement:
- Measurements of electrical and magnetic quantities
Structural division: name НИО\НИЛ:
- Research Laboratory of State Standards in the Field of Measurement of Electrical Circuit Parameters
Guardian Scientist:
- Semenov Yuri Petrovich
Year of creation:
- 1979
Year of re-confirmation:
- 1979
Operating principle:
The reproduction of the unit of inductance is carried out in the Maxwell-Wien bridge circuit based on standards of electrical capacitance and resistance.
Composition of the standard:
- Группа из четырех мер индуктивности;
- Индуктивно-емкостный мост
Main metrological characteristics
| Characteristic Name | Value |
|---|---|
| Nominal inductance values at which unity is reproduced | 10 mH, 100 mH |
| The unit of measurement reproducibility with the mean relative square deviation of the measurement result So in ten (n=10) independent measurements does not exceed | 1 x 10-6 |
| The unexcluded relative systematic error Θo does not exceed | 5 x 10-6 |
| The Type A standard uncertainty, uAo, does not exceed | 1 x 10-6 |
| The Type B standard uncertainty, uBo, does not exceed | 3 x 10-6 |
| Total standard uncertainty | 3.16 x 10-6 |
| Expanded uncertainty (at k=2) | 6.3 x 10-6 |
| Instability of νo storage unit per year | 1·10-6 |
Verification diagram:
- Heads the state verification scheme for inductance measuring instruments
Scope of application:
- Instrument engineering and radioelectronic industry;
- Electric power, nuclear power, etc.
Results of applying the standard:
The unit of inductance is transferred from the State Primary Standard via the State Secondary Standards in the range:
- Inductance values of 10 nH - 1 kH at frequencies of 40 Hz - 100 MHz;
- Mutual inductance values of 5 μH - 10 mH at frequencies of 40 Hz - 100 kHz.
The total number of measuring instruments traceable to ГЭТ 15-79:
Not specified
Ensuring the uniformity of measurements, participation in the CIPM MRA program:
9
- COOMET Comparisons No. 113/DE-a/94 International Comparisons of 10 mH Inductance Standards (1994)
- CCEM-K3 (1989 - 1999); Comparison of inductors. Inductance: 10 mH, Frequency: 1 kHz; Participants: PTB; ASMW; BNM-LCIE; IEN; METAS; NIM; NIST; NPL; SP; UME; VNIIM
- CCEM-K7 (1999 - 2003); Electricity and Magnetism, AC Voltage, Current, Power, and AC/DC Transfer; AC voltage ratio, Frequency: 1 kHz and 55 Hz (optional); participants: NPL; CEM; INRIM; KRISS; LNE; METAS; NIM; NIST; NMIA; NMIJ AIST; NPLI; NRC; PTB; SP; UME; VNIIM; VSL
- Bilateral comparisons 2009 - 2010; MIKES (Finland), SP (Sweden)
Unique technical installations as part of the standard:
None
PHOTO:
/Picture.png)