State system for ensuring the uniformity of measurements. Gas meters. Calibration method

Standard published on 1.5.2023

State system for ensuring the uniformity of measurements. Normal hydro-gen. Thermophysics properties at temperatures to 1000 K and pressures to 100 MPa

Standard published on 1.12.2023

State system for ensuring the uniformity of measurements. Moist methane. Thermodynamic properties at temperatures from 200 K to 400 K, pressures from 0,1 to 10 MPa and relative moisture from 0,2 to 1,0

Standard published on 1.12.2023

State system for ensuring the uniformity of measurements. Liquid and gaseous methane. Thermodynamic properties, dynamic viscosity and thermal conductivity at temperatures range from 91 K to 700 K and pressures up to 100 MPa

Standard published on 1.12.2023

State system for ensuring the uniformity of measurements. Moist hydrogen. Thermodynamic properties at temperatures from 200 to 400 K, pressures from 0,1 to 10 MPa and relative moisture from 0,2 to 1,0

Standard published on 1.12.2023

State system for ensuring the uniformity of measurements. Hydrogen and its isotopes. Surface tension

Standard published on 1.12.2023

State system for ensuring the uniformity of measurements. Expert metrologist for metrological examination of technical documentation. General requirements

Standard published on 1.10.2023

State system for ensuring the uniformity of measurements. Metrological examination of technical documentation. Basic provisions

Standard published on 1.10.2023

State system for ensuring the uniformity of measurements. Coriolis mass flowmeters, coriolis mass flow rate meters, coriolis mass flow converters. Verification procedure

Standard published on 1.8.2023

State system for ensuring the uniformity of measurements. Turbine flow transducers, turbine flowmeters, turbine meters. Verification procedure

Standard published on 1.8.2023