Russian standards PDF
The state system of ensuring the uniformity of measurements. Variable pressure drop technique. Special orifices. Part 1. Principle of measurement technique and general requirements
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State system for ensuring the uniformity of measurements. Indication pressure gauges. Reference measuring instruments. Metrological requirements and test methods
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State system for ensuring the uniformity of measurements. Reference systems for certification reference materials composition of magistral natural gas and substitute natural gas. The method of verification
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State system for ensuring the uniformity of measurements. Certified reference materials of natural gas magistral and substitute natural gas. Procedure of determining the metrological characteristics
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State system for ensuring the traceability of measurements. Gas analyzers and gas alarm devices for determination of combustible gases and vapors in working zone air. Testing method
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State system for ensuring the uniformity of measurements. Gas generators vapor ethanol in the air. Verification procedure
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