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【仪表自控交流圈】 / Instrumentation & Automation
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English
#3280285
Instrument and automatic control information collection 21 [Instrument and automatic control] list - HCBBS Forum
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#5658804
Xylene is classified as moderately hazardous, Category A; should it be labeled as toxic or flammable? - HCBBS Forum
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#5504940
"Distributed Control Systems and Industrial Control Networks" - HCBBS Forum
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#5664601
GDS system - HCBBS Forum
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#3266620
Why is the front closed, but there are functional blocks running at the back? - HCBBS Forum
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#5682905
【2025 I&C】Examples of split-range control systems and methods to avoid sudden changes in flow rate at the split points -
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#5695925
【2025 Mandatory Certification】Starting from July 1, 2025, combustible gas detection and alarm devices will require CCC c
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#5712486
【2026 Control Systems】FAQs on S7-1200 - HCBBS Forum
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#3283519
Does anyone have a PDF version of the Process Industry Instrumentation Engineer's Manual? Please ask for help. - HCBBS F
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#5723416
[2026 Design Software] Import of gauge properties in SPI (INTools) - HCBBS Forum
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#5709351
Quickly master the HART smart converter: operation methods and instructions - HCBBS Forum
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#5724246
【2026 Level Gauges】3 Scenarios Where Double-Flange Capillaries Require Insulation and Compensation Solutions - HCBBS For
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#5723716
【2026 Standard Specification】SH/T 3245—2025 \"Design Specifications for Petrochemical Alarm Management Systems\" will co
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#5718475
Issue with setting the current alarm value for the mixer in the reactor in DCS - HCBBS Forum
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#599187
Surge protector - HCBBS Forum
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#864813
I’m new here; I seek a master - HCBBS Forum
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#864782
High-temperature thermocouple for gasifier - HCBBS Forum
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#5716953
Henan Jinkong Tianqing Coal Chemical Industry obtained patent authorization for "a calibration device for a flow meter"
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#5721181
【Common Issues in Haichuan Pipeline Design】--Guide to Flow Calculation and Selection of Control Valves - HCBBS Forum
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#864805
One-in-two-out current distributor - HCBBS Forum
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#864639
What is a drop alarm? - HCBBS Forum
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#864731
SIL certification requirements for intelligent transmitter products - HCBBS Forum
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#950502
How to accumulate flow data in Yokogawa DCS? - HCBBS Forum
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#5726761
【2026 Control Systems】Compatibility Issues in the Upgrade and Transformation of DCS Systems - HCBBS Forum
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#5719537
What are the methods for detecting air leakage in pneumatic valves? - HCBBS Forum
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#5722341
【2026 Alarm Settings】The five basic elements of alarm settings - HCBBS Forum
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#864819
Hydraulic station proportional valve - HCBBS Forum
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#5711711
【2026 Control Valves】Methods for detecting air leakage in pneumatic valves - HCBBS Forum
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#5718604
【2026 Electromagnetic Valves】Differences between center-seal, center-drain, and center-pressure three-way five-port elec
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#5713450
High level gauge output -- Interpretation based on the diagram - HCBBS Forum
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#5720991
A table explains which storage tanks require high liquid level alarms, high-high liquid level alarms and interlocks, low
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#5712976
Emerson mass flow meter - HCBBS Forum
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#5722104
【2026 Control System】Basis and Key Points for Identifying Hidden Dangers in GDS Systems - HCBBS Forum
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#5711548
【2026 Safety Risks】Common problems and risks in terms of safety, processes, equipment, electricity, instrumentation, fir
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#5719545
Why are servo level gauges preferred for most level meters in the spherical tank area? - HCBBS Forum
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#5724714
【2026 Level Gauges】Process connection methods from standard to specialized for radar level gauges - HCBBS Forum
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#5722767
【2026 Explosion Protection Certification】Differences between ATEX, IECEx, and PCEC certifications - HCBBS Forum
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#5721935
【2026 Control Valves】How to select the right pneumatic control valve - HCBBS Forum
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#5717216
What is a metering instrument? - HCBBS Forum
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#690867
Looking for PCS7 demo tutorials - HCBBS Forum
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#5713263
【2026 Temperature Meters】Selection principles for temperature transmitters and the impact of ambient temperature on the
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#864793
Triconex DO card red light - HCBBS Forum
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#5724715
【2026 Level Gauges】The difference in precision between 16-bit and 24-bit radar level gauges - HCBBS Forum
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#950548
Selection of remote temperature sensor type: minus 162 degrees Celsius - HCBBS Forum
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#5721251
Transmitter zero point correction problem - HCBBS Forum
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#5723199
【2026 Instrument Parameters】Detailed Explanation of Key Flow Meter Parameters (Accuracy, Repeatability, Range Ratio) - H
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#5718422
【2026 Control Valves】Air lock issue with control valves - HCBBS Forum
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#5720777
The DCS interlock result is sent to the SIS to drive the relevant solenoids - HCBBS Forum
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#5722101
【2026 Control Systems】Basis and Key Points for Identifying Hidden Dangers in DCS Systems - HCBBS Forum
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#5723319
Distance between instrument cable trays and electrical cable trays - HCBBS Forum
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#5717233
Why is aging performed on instruments before they leave the factory? Detailed explanation of the entire process - HCBBS
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#5719252
【Haichuan Illustrated Chemical Equipment】Series Posts -- Rising Film Evaporator - HCBBS Forum
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#5726286
Regarding combustible gas installations - HCBBS Forum
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#5717320
Tricon Consulting - HCBBS Forum
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#5724880
【2026 Valve Positioners】Application of small-signal cutoff and deadband setting in valve positioners - HCBBS Forum
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#5722806
【Haichuan Equipment Guessing Game】After it’s taken apart, can you guess which company’s product it is? - HCBBS Forum
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#5714359
[2026 Explosion Protection Design] Are electrical devices in oxygen-rich environments required to have explosion protect
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#5726479
[2026 Risk Assessment] Anti-static grounding facilities are not installed in the antistatic raised flooring of the cabin
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#864464
Issues with instrument cable trays in coastal areas - HCBBS Forum
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#5722564
【2026 Execution Appendix】Core Functions of Valve Positioners - HCBBS Forum
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#5722102
【2026 Control Systems】Basis and Key Points for Identifying Hidden Dangers in PLC Systems - HCBBS Forum
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#5719522
[2026 Condition Analysis] Why is it necessary to maintain the water level within the normal range while the boiler is in
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#5726415
【2026 Axis Instruments】Difference between zero-point installation of Bentley eddy current probes at 8V and 10V - HCBBS
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#599408
Are there any examples of drawings for automatic control design in this area? - HCBBS Forum
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#599266
Problems with through-plate joints - HCBBS Forum
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#690742
Level gauge issue - HCBBS Forum
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#5726858
【2026 Control Valves】For control valves under the same operating conditions, whether to use a linear or equal percentage
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#5723604
【2026 Interlocking System】Three interlocking design schemes for automatically starting standby pumps and their advantage
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#5726563
【2026 Control Systems】Technical logic for selecting technologies within the technical and regulatory framework for isola
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#5722223
【2026 Motor Temperature】The direct cause of motor heating - HCBBS Forum
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#5718037
【Haichuan Equipment Guessing Game】What is tied to the pipe? ? - HCBBS Forum
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#5715986
Why do pharmaceutical factories and those involved in the testing of pharmaceutical intermediates choose ultrasonic test
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#5722638
【Common Issues in Haichuan Pipeline Design】--Should the pressure instrument sampling point be installed separately? - HC
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#5719536
Definitions of valve commands and feedback (AI and AO), identification of fault points, and troubleshooting - HCBBS Foru
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#5715477
【Learning from Others: Jilin Petrochemical’s Acrylonitrile Plant Overcomes the Problem of pH Meter Damage Through Techni
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#5718497
Tianjin Xuner Technology Co., Ltd. applied for a patent titled "Conveniently Connected Vortex Flowmeter" - HCBBS Forum
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#5723617
The upgrade project of the Quanying ADMC thermoelectric intelligent control system at Shaanxi Aowei Qianyuan Chemical Co
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#950370
How to install an intelligent integrated temperature transmitter - HCBBS Forum
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#5717313
Chuanyi wins the procurement contract for control valves and switch valves in an Indonesian project - HCBBS Forum
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#690758
What is the purpose of using quick-release valves in some valve control circuits (pneumatic circuits)? - HCBBS Forum
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#5718170
Installation of reverse-mounted spool control valves - HCBBS Forum
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#5723260
【2026 Nitrogen Sealing System】Should the pressure gauge for the nitrogen sealing valve pipeline be installed before or a
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#599276
Which manufacturer offers good face thermistors? - HCBBS Forum
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#5720162
【Safety Management and Standardization of Special Equipment】How should mandatory inspections of pressure gauges be carri
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#690587
Instrument interlock testing plan for chemical plants - HCBBS Forum
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#5721831
【2026 Monitoring System】Bentley condition monitoring principle and calculation method for shaft vibration, installation
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#5726156
[2026 Risk Assessment] No gas detectors are installed at the air intake of the control room to detect toxic chemicals -
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#690806
Why is a three-way ball valve used in diaphragm pressure gauges? - HCBBS Forum
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#5716309
Biaxial displacement detection component - HCBBS Forum
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#864670
【Discussion】Selection of actuator for quick shut-off valves in tank areas - HCBBS Forum
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#5724264
What do these fault location codes for pneumatic valves mean? FC, FO, FL, FLC, FLO, AFL/EFC, and AFL/EFO - HCBBS Forum
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#864483
Switch-type actuator models of Tianertong - HCBBS Forum
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#5722103
【2026 Control Systems】Basis and Key Points for Identifying Hidden Dangers in SIS Systems - HCBBS Forum
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#5712287
Temperature and pressure instruments related to oil storage and transportation - HCBBS Forum
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#950433
What does this instrument symbol mean? (see picture) - HCBBS Forum
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#5724593
[Haichuan’s Guide to Chemical Equipment] Precision Chemical Drying Equipment – Conical Screw Vacuum Dryer - HCBBS Forum
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#5723359
Issues related to bridge load and spacing between instrument cables and power cables - HCBBS Forum
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#5726973
【2026 Basic Knowledge】Complete Classification of Automated Instruments - HCBBS Forum
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#5723363
【2026 Valve Knowledge】Core Differences and Selection Criteria among O-Type Ball Valves, V-Type Ball Valves, and Tilting
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#5718122
【2026 Control Scheme】Typical control scheme in P&ID - HCBBS Forum
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