Amplifying, rectifying and transmitting tubes of anode dissipated power to 25 W and vacuum display tubes for wide application designs. General specifications
State system for ensuring the uniformity of measurements. Volume flow rate and quantity of natural gas. Measurements procedure (method) using volumetric diaphragm and fluidics gas meters
Non-domestic gas-fired forced convection air heaters for space heating not exceeding a net heat input of 300 kW, without a fan to assist transportation of combustion air and/or combustion products. The general technical requirements and test methods
