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Legal and standard conditions for ultrasonic gaś meters use in Poland. Assembly reguirements. Technical solutions for measurement of gaś flow in joints in the light of using ultrasonic gaś meters so far. Examples of a few ultrasonic gasmeters applications in the used objects.
Present state of legal regulations in Poland concerning gas grids" inspections with measuring pistons. Selected technical standards in the field of gas grids" diagnostics. Directives for introducing necessary changes in Polish law and for designing transmission operator's strategy in the field of adapting high pressure gas grids to inspection with measuring pistons.
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