State system for ensuring the uniformity of measurements. Pressure gauges, vacuum pressure gauges, vacuum manometers, draught gauges, delivery head meters and draught head gauges with unified electric (current) output signals. Methods and means of verification
Stationary source emissions. Determination of gas and particle-phase polycyclic aromatic hydrocarbons. Part 2. Sample preparation, clean-up and determination
United power system and isolated power systems. Relay protection and automation. Differential phase protection of power lines at voltage 110–220 kV. Testing
