State system of ensuring the uniformity of measurements. Functional units, sub-assemblies and devices in instruments for measurement of ionizing radiation. Counters of pulses. Methods and means of verification
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State system for ensuring the uniformity of measurements. Measurement of liquids and gases flow rate and quantity by differential pressure method. Orifice plates, nozzles ISA 1932 and Venturi tubes inserted in circular cross-section filled conduits. Specifications
