Regarding the professional specification HG/T 20507 (Coal Chemicals Gasification Framework)

2015-09-10View Original

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I recently reviewed the guidelines for instrument selection in the 2014 version of HG/T20507. The specifications from the 2000 version were very detailed; page 55 covered the selection of accuracy levels for flow meters. In the 2014 version, one option – “other energetic substances” – is no longer included. For the measurement of oxygen flow rate in the gas processing section of coal chemical plants, the required accuracy is ±0.1% FS; however, in version 2000 it is ±2%. Why was an accuracy level suitable for commercial measurement chosen for measurements that are not intended for trading purposes? However, in the 2014 version it was unified as “energy-consuming units for entry and exit”. How should this be understood?

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Regarding the professional specification HG/T 20507 (Coal Chemicals Gasification Framework)

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