ГЭТ 17-2018 (НИЛ 2302)
Standard name:
- ГЭТ 17-2018 State Primary Standard of Units of Dynamic and Kinematic Viscosity of Liquids
Type of measurement:
- Measurements of the physical and chemical composition and properties of substances
Structural division: name НИО\НИЛ:
- Laboratory of State Standards in the Field of Measurements of Liquid Density and Viscosity
Guardian Scientist:
- Demyanov Alexey Alekseevich
Year of creation:
- 1971
Year of re-confirmation:
- 2018
Operating principle:
Viscosity measurement methods: capillary, vibration, and Stokes (rolling ball).
Composition of the standard:
- The reference complex (EK GET 17/1-KVI) is designed to reproduce, store, and transmit the unit of kinematic viscosity in the temperature range from +20°C to +40°C;
- The reference complex (EK GET 17/2-KVN) is designed to reproduce, store, and transmit the unit of kinematic viscosity in the temperature ranges from -40°C to +20°C and from +40°C to +150°C;
- The reference complex (EK GET 17/3-DVP) is designed to reproduce, store, and transmit the unit of dynamic viscosity of a liquid in a flow in the temperature range from +20°C to +40°C and in the pressure range from 0.5 MPa to 4.0 MPa;
- The reference complex (EK GET 17/4-DVD) is designed to reproduce the unit of dynamic viscosity of a liquid in the temperature range from +20°C to +40°C and in the pressure range from 0.1 MPa to 4.0 MPa.
Main metrological characteristics
| Metrological characteristic name | Value |
|---|---|
| Reference complex ЭК ГЭТ 17/1-КВИ | |
| The range of values of the unit of kinematic viscosity of a liquid in which the unit is reproduced, mm2/s | from 4.0·10-1 to 1.0·105 |
| Temperature range, °C | from 20 to 50 |
| The relative expanded uncertainty at the coverage factor k=2, UR, does not exceed | 1,7·10-3 |
| Reference complex ЭК ГЭТ 17/2-КВН | |
| The range of values of the unit of kinematic viscosity of a liquid in which the unit is reproduced, mm2/s | from 4.0·10-1 to 1.0·105 |
| Temperature range, °C | from -40 to +150 |
| The relative expanded uncertainty at the coverage factor k=2, UR, does not exceed | 2,0·10-3 |
| Reference complex ЭК ГЭТ 17/3-ДВП | |
| The range of values of the unit of dynamic viscosity of a liquid in a flow in which the unit is reproduced, mPa s | 0,5 – 100,0 |
| Temperature range, °C | from 20 to 40 |
| Pressure range, MPa | from 0.5 to 4.0 |
| Expanded uncertainty with coverage factor k=2, U, does not exceed, mPa s | 0.25 |
| Reference complex EK GET 17/4-DVD | |
| Range of values of the unit of dynamic viscosity of liquids in which the unit is reproduced, mPa s | from 1.0 to 300.0 |
| Temperature range, °C | 20 to 40 |
| Pressure range, MPa | 0.1 to 4.0 |
| Relative expanded uncertainty with a coverage factor of k=2 (P=0.95), UR, does not exceed | 5.2 x 10-3 |
Verification diagram:
- Heads the state verification scheme for liquid viscosity measuring instruments
Scope of application:
- Oil, petrochemical, fuel and energy;
- Aircraft engineering;
- Food; medical, and other industries;
Results of applying the standard:
Not specified
The total number of measuring instruments traceable to ГЭТ 17-2018:
More than 100,000
Ensuring the uniformity of measurements, participation in the CIPM MRA program:
11
PHOTO:
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