Registration number (WIID)Project No.TitleStatus
66879LVS EN ISO 15112:2019Natural gas - Energy determination (ISO 15112:2018)Standarts spēkā
62889LVS EN ISO 20765-1:2019Natural gas - Calculation of thermodynamic properties - Part 1: Gas phase properties for transmission and distribution applications (ISO 20765-1:2005)Standarts spēkā
62890LVS EN ISO 20765-2:2019Natural gas - Calculation of thermodynamic properties - Part 2: Single-phase properties (gas, liquid, and dense fluid) for extended ranges of application (ISO 20765-2:2015)Standarts spēkā
71673LVS EN ISO 20765-5:2022Natural gas - Calculation of thermodynamic properties - Part 5: Calculation of viscosity, Joule-Thomson coefficient, and isentropic exponent (ISO 20765-5:2022)Standarts spēkā
62998LVS EN ISO 23874:2019Natural gas - Gas chromatographic requirements for hydrocarbon dewpoint calculation (ISO 23874:2006)Standarts spēkā
76595LVS EN ISO 6143:2025Gas analysis - Comparison methods for determining and checking the composition of calibration gas mixtures (ISO 6143:2025) 
60267LVS EN ISO 6976:2016Natural gas - Calculation of calorific values, density, relative density and Wobbe indices from composition (ISO 6976:2016)Standarts spēkā
28627prCEN ISO/TR 15403-2Natural gas - Natural gas for use as a compressed fuel for vehicles - Part 2: Specification of the qualityIzstrādē
32769prCEN/TR 1404 revDetermination of emissions from appliances burning gaseous fuels during type-testingIzstrādē
74768prCEN/TR 1472General guidance for the marking of gas appliancesIzstrādē
Displaying 101-110 of 124 results.