HG/T 20637.4-1998
Guid for preparation of engineering documents of instrumentation (English Version)
- Standard No.
- HG/T 20637.4-1998
- Language
- Chinese, Available in English version
- Published By
- Professional Standard - Chemical Industry
- Status
- 2018-04
- Replace By
- HG/T 20637.4-2017
- Latest
- HG/T 20637.4-2017
- Scope
- 1.0.1 These regulations are compiled in order to obtain accurate control measurements, meet the requirements for instrument maintenance and convenient operation, and determine the installation location of the instrument correctly and reasonably. 1.0.2 These regulations are used to guide automatic control designers in formulating instrument construction and installation requirements for engineering projects. Or guide designers to select and supplement the instrument construction and installation requirements (general) in Appendix A of this regulation to form the instrument construction and installation requirements for the project.
HG/T 20637.4-1998 history
- 2018 HG/T 20637.4-2017 Compilation of engineering design documents for automatic control of chemical equipment
- 1970 HG/T 20637.4-1998 Guid for preparation of engineering documents of instrumentation
