English — Forum #350 (Page 16/163)

1. The MFC series electromagnetic flowmeters from Chuanyi show a reading of 0 - HCBBS Forum
2. 【2025.1.1】1. Can the emergency stop button on the control column be connected to the SIS system to close the valve, instead of being connected to the solenoid valve? - HCBBS Forum
3. Selection of liquid level gauges for gasification furnaces - HCBBS Forum
4. [2025 Standards] The \"Requirements for the Safety Production Standardization Management System in Large and Medium-sized Enterprises\" are currently under approval and will come into effect on October 31, 2025 - HCBBS Forum
5. Regarding UPS power supply selection - HCBBS Forum
6. 【Y2025】Differences between radar level gauges and guided wave radar level gauges - HCBBS Forum
7. Classic Summary of Honeywell EPKS System Backup - HCBBS Forum
8. Zhongkong Technology’s DCS and Safety Instrumentation System for the 15 million tons per year demonstration project on clean and efficient conversion of coal into various products at Yulin Chemical, Shaanxi Coal Group – including olefins, aromatics, and related deep-processing processes - HCBBS Forum
9. What is the purpose of the pneumatically controlled three-way valve on the air pipeline in the HG instrument installation diagram? - HCBBS Forum
10. Should the temperature of the three-phase windings of a high-voltage motor be used for alarm purposes or for interlock functions? - HCBBS Forum
11. Dinghua Radar Instrument Training School: An analysis of the detection methods for radar level gauges - HCBBS Forum
12. 【2025 Flow Meters】Pressure drop requirements for seven types of flow meters and selection strategies - HCBBS Forum
13. 【Ten Years of Rapid Development in Chemical Equipment】2763–2025: Localization of software and hardware for Lanzhou Petrochemical’s DCS control system - HCBBS Forum
14. How is the output signal range of an intelligent valve positioner determined? - HCBBS Forum
15. 【Ten Years of Rapid Development in Chemical Equipment】2608-2025: Maoming Petrochemical’s Artificial Intelligence Platform Builds a Digital Barrier for Disaster Prevention - HCBBS Forum
16. Should a benzene gas alarm use a diffusion type or a pump-driven type? Application status? - HCBBS Forum
17. Why is there no output from the FC105 module in step7? - HCBBS Forum
18. Modified design for clogged orifice plates in standard flow meters - HCBBS Forum
19. 【Y2025】Common unit conversion relationships for gas concentration: %LEL, %VOL, PPM, and mg/m3 - HCBBS Forum
20. Dinghua Radar Instrument Training School: How to determine whether a radar level gauge is working properly - HCBBS Forum
21. 【2025 PPT Sharing】Common starting methods for electric motors and the differences between variable-frequency starting and soft starting - HCBBS Forum
22. I’m asking fellow sailors: can the analog real-value forced control of the central control JX300 be implemented through SFC sequential control logic? - HCBBS Forum
23. 【Weekend Share-18】Can gas explosion-proof equipment replace dust explosion-proof equipment? - HCBBS Forum
24. Does the overspeed protection system act directly on the valve solenoid, or does it control the valve after entering the SIS? - HCBBS Forum
25. Steam pressure relief valve - HCBBS Forum
26. What type of pressure gauge is used for LPG storage tanks? - HCBBS Forum
27. Domestic mass flow meters - HCBBS Forum
28. Principle and calculation of differential pressure level gauges - HCBBS Forum
29. 【2025 Analytical Instruments】Selection of Online Analytical Instruments - HCBBS Forum
30. Dinghua Radar Knowledge Lecture: Fault Handling of Radar Level Meters in Oil Tank Storage - HCBBS Forum
31. 【Prized Discussion】Which will be mainstream in the future: LD ladder logic or ST structured text? - HCBBS Forum
32. The PLC output remains unchanged; it returns to normal after the wiring is removed for a while - HCBBS Forum
33. 【Y2025】Understanding Explosion Protection Ratings at a Glance - HCBBS Forum
34. Request for the test question bank for instrument technicians: Control Systems volume, 3rd edition - HCBBS Forum
35. SIS system instrument delay issue - HCBBS Forum
36. Recommendations for industrial health management equipment – Beijing Bohuaxinzhi - HCBBS Forum
37. Configuration for Hilscher SIS time synchronization - HCBBS Forum
38. 【Ten Years of Rapid Development in Chemical Equipment】From 2020 to 2025, Zhongkong Technology, in collaboration with Zhejiang Petrochemical, built the largest integrated refining and chemical complex to date, setting a control point record of 770,000 - HCBBS Forum
39. 【2025 Industrial Automation Updates】Mitsubishi launches a new all-in-one PLC controller - HCBBS Forum
40. Issues regarding the heat generation power of explosion-proof power enclosures - HCBBS Forum
41. [Haichuan Chemical Technology Documentation] Basics of Self-acting Control Valves - HCBBS Forum
42. Components of the SIS verification circuit - HCBBS Forum
43. Mass flow meters provide inaccurate measurements for gas-liquid two-phase media - HCBBS Forum
44. 【2025 Little Knowledge】Methods for installing cable entry devices - HCBBS Forum
45. What does this logic mean? Please let me know, thanks in advance - HCBBS Forum
46. Let’s discuss whether it is necessary for companies these days to obtain a HAZOP* certificate - HCBBS Forum
47. Specifications for the use of electronic wiring/field substation boxes in the chemical industry - HCBBS Forum
48. Application of MCT790 intelligent valve positioner in synthetic ammonia! ! ! - HCBBS Forum
49. ​ Dinghua Radar Instrument School: Why use radar level gauges to measure oil? - HCBBS Forum
50. 【2025 Knowledge Accumulation】10. Measurement issues with guided-wave radar level gauges (with answers) - HCBBS Forum
51. 【2025 Instrument Settings】Sequence of setting pressure, temperature, flow rate instruments and valves on pipelines - HCBBS Forum
52. [Haichuan Intelligence] Anqing Petrochemical successfully put into use an intelligent temperature and humidity monitoring system for substations - HCBBS Forum
53. Help: Debugging the Fisher DVC6200 using the SupX600 controller - HCBBS Forum
54. 16 Key Points for the Use and Maintenance of Instruments - HCBBS Forum
55. Home-made instrument technician assistant app - HCBBS Forum
56. 【2025 Book Recommendations】Engineer’s Guide: Differential Pressure (DP) Flow Measurement Technology - HCBBS Forum
57. How is the feed rate to the distillation tower adjusted automatically? - HCBBS Forum
58. I have a question regarding the temperature and pressure compensation for vortex flowmeters - HCBBS Forum
59. I want to learn **some basic knowledge** - HCBBS Forum
60. 【Y2025】Video on the control principle of solenoid valves - HCBBS Forum
61. Online detection of the concentration of silane coupling agents in the copper foil production process - HCBBS Forum
62. Is the inability to open the control valve of the pipeline related to the medium? - HCBBS Forum
63. Problems in interlock logic diagram design - HCBBS Forum
64. 【2025 Level Gauges】Technical Differences and Selection of Frequencies for 6GHz/26GHz/80GHz Radar Level Gauges - HCBBS Forum
65. Regarding the setup of the instrument inspection laboratory - HCBBS Forum
66. Suggestions for instrument interlock management in the refining and petrochemical industry - HCBBS Forum
67. Dinghua Radar Instrument Training School: Are there any things to keep in mind when installing radar level gauges? - HCBBS Forum
68. Issues with DCS interlock and SIS interlock protection layers - HCBBS Forum
69. 【Ten Years of Rapid Development in Chemical Equipment】From 2024 to 2079, Sinopec will build the world’s first digital twin smart ethylene plant in the chemical industry - HCBBS Forum
70. 【Industry News】General contracting work begins on the 600,000-ton ethanol production facility of Inner Mongolia Zhuozheng’s large-scale coal chemical project - HCBBS Forum
71. Zhejiang Zhongkong SIS - HCBBS Forum
72. Are there clear standard specifications for the inspection of DCS systems? - HCBBS Forum
73. Problems with explosion-proof junction boxes - HCBBS Forum
74. Float flow meter: flow rate decreases as pressure increases - HCBBS Forum
75. The on-site magnetostrictive level gauge keeps shutting down and needing to be restarted - HCBBS Forum
76. Describe based on the diagram, a PID diagram. - HCBBS Forum
77. 【Weekend Share-10】How many grounding wires are allowed at the same compression point? - HCBBS Forum
78. Installation specifications for U-tube manometers - HCBBS Forum
79. 【Y2025】Specific technical selection principles and common models for ASCO solenoid valves - HCBBS Forum
80. Definition of instrument tube and valve components for pressure transmitters. - HCBBS Forum
81. 200 Questions on Pressure Instruments - HCBBS Forum
82. 【Y2025】Understand gauge pressure, absolute pressure, relative pressure, and vacuum in one diagram - HCBBS Forum
83. Can a gate valve be used as an emergency shut-off valve? - HCBBS Forum
84. Cable protection through conduits - HCBBS Forum
85. Regarding the motor’s IO points - HCBBS Forum
86. 【2025 Technical Essentials】Knowledge Needed for Custom Design - HCBBS Forum
87. 【2025 Wiring Boxes】Types and Applications of Explosion-Proof Wiring Boxes - HCBBS Forum
88. Regarding gas pipeline flow measurement - HCBBS Forum
89. Dinghua Radar Knowledge Lecture: Applications of Guided Wave Radar Level Gauge Technology - HCBBS Forum
90. Share a valve selection software - HCBBS Forum
91. 【2025 Safety Management】11 Essential Books on Safety Management - HCBBS Forum
92. Dinghua Radar Instrument Training School: Types of antennas for radar level gauges - HCBBS Forum
93. What type of flow meter is used for steam condensate? - HCBBS Forum
94. [Haichuan Intelligence] Multiple petrochemical enterprise projects have been included in the list of **-level smart factory project development programs - HCBBS Forum
95. If there is an emergency stop button in the SIS control room, is it necessary to have an additional emergency stop button on-site as well? - HCBBS Forum
96. [Weekend Share-6] What level of alarm signal should be used for various audio and visual alarms? - HCBBS Forum
97. Issues regarding the installation direction of electric fluoroplastic ball valves - HCBBS Forum
98. I would like to ask what signal type should be used for the alarm light - HCBBS Forum
99. How can the air consumption of a pneumatic on/off valve be simply estimated? - HCBBS Forum
100. What should be noted when installing explosion-proof flange connections? - HCBBS Forum