Norm

ASTM D7278 - 11 en

Standard Guide for Prediction of Analyzer Sample System Lag Times

  • Deze norm is ingetrokken sinds 01-04-2016

50,60 61,23 Incl BTW

Over deze norm

Status Ingetrokken
Aantal pagina's 9
Gepubliceerd op 15-10-2011
Taal Engels

1.1 This guide covers the application of routine calculations to estimate sample system lag time, in seconds, for gas, liquid, and mixed phase systems.

1.2 This guide considers the sources of lag time from the process sample tap, tap conditioning, sample transport, pre-analysis conditioning and analysis.

1.3 Lag times are estimated based on a prediction of flow characteristics, turbulent, nonturbulent, or laminar, and the corresponding purge requirements.

1.4 Mixed phase systems prevent reliable representative sampling so system lag times should not be used to predict sample representation of the stream.

This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Details

Engelse titel Standard Guide for Prediction of Analyzer Sample System Lag Times
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