HG/T 20637.2-1998
Guid for preparation of engineering documents of instrumentation (English Version)
- Standard No.
- HG/T 20637.2-1998
- Language
- Chinese, Available in English version
- Published By
- Professional Standard - Chemical Industry
- Status
- 2018-04
- Replace By
- HG/T 20637.2-2017
- Latest
- HG/T 20637.2-2017
- Scope
- 1.0.1 In order to meet the needs of automatic control professional engineering design and standardize engineering design documents, these regulations are specially formulated. 1.0.2 This provision applies to instrument loop diagrams, instrument location diagrams, instrument cable tray layout diagrams, instrument cable (tube cable) and bridge tray layout diagrams, on-site instrument wiring diagrams, logic diagrams, and semi-simulation processes in the design of chemical plant automatic control projects. Drawing of diagrams and DCS process displays, instrumentation and common electrical equipment and other graphic symbols.
HG/T 20637.2-1998 history
- 2018 HG/T 20637.2-2017 Specifications for the preparation of engineering design documents for chemical plant automatic control specialty Graphical symbols and text codes for automatic control professional engineering design
- 1970 HG/T 20637.2-1998 Guid for preparation of engineering documents of instrumentation
