1Explosion proof pressure transmitterCore application scenario: Full chain coverage from storage tanks to drilling platforms
Tank pressure monitoring and liquid level control
Function: Real time monitoring of pressure changes inside the storage tank to prevent the risk of explosion caused by the accumulation of volatile gases. When the pressure exceeds the safety threshold, the interlocking system automatically activates the pressure relief device to ensure the safety of the storage tank.
Case: A petrochemical enterprise adopted high-precision explosion-proof transmitters (accuracy ± 0.075% FS), successfully avoiding tank overpressure accidents caused by pressure misjudgment, and reducing annual maintenance costs by 400000 yuan.
Technical highlights:
Wide range design (0-0.1MPa to 0-250MPa), covering pressure requirements of different media;
Hastelloy membrane, resistant to corrosion from high-purity hydrogen gas and hydrogen containing mixed gases.
Pipeline pressure monitoring and leakage detection
Function: By analyzing pressure fluctuations to locate pipeline damage points, combined with the high-precision (0.1% FS) explosion-proof transmitter, early warning can be achieved.
Case: After deploying explosion-proof transmitters in a long-distance pipeline project, the response time for leak detection was shortened from 2 hours to 10 minutes, reducing crude oil leakage losses by over a thousand tons.
Technical highlights:
4-20mA signal output, strong anti-interference ability, suitable for long-distance transmission (≥ 1km);
Explosion proof structure (dIICT6), meeting the requirements for use in explosive gas environments.
Pressure Control and Process Optimization of Reactor
Function: In high-temperature and high-pressure reactions, explosion-proof transmitters can withstand strong acid and alkali media, ensuring stable process parameters and avoiding uncontrolled reactions.
Case: A chemical enterprise used explosion-proof transmitters to monitor the pressure of the reactor in real time, which increased the reaction efficiency by 15% and the product qualification rate to 99.5%.
Technical highlights:
Intrinsic safety design (iaIICT4), can be directly installed in hazardous areas;
Temperature compensation function, maintaining measurement stability within the range of -20 ℃ to 85 ℃.
Ground Blowout Preventer Control System (BOP)
Function: As the core device for oilfield safety operations, explosion-proof transmitters monitor hydraulic system pressure, control the opening/closing of the blowout preventer group and relief valve, and prevent blowout accidents.
Case: After a certain offshore drilling platform adopted explosion-proof transmitters, the well control response time was shortened from 3 minutes to 30 seconds, and the risk of personnel injury was reduced by 90%.
Technical highlights:
High protection level (IP68), suitable for humid and salt spray environments at sea;
Redundant design ensures a system reliability of 99.99%.
2、 Technical advantage: triple guarantee of safety, accuracy, and reliability
Explosion proof structure: dual protection of physical isolation and energy limitation
Explosion proof type (Ex d): It withstands internal explosion pressure through a sturdy shell, preventing flames from spreading to the external environment.
Intrinsic safety type (Ex ia): limits the energy of the circuit to ensure that even in the event of a malfunction, no electrical spark sufficient to ignite explosive gases will be generated.
Certification standards: Compliant with international explosion-proof standards such as GB3836, ATEX, IECEx, etc., covering global market access needs.
High precision measurement: improving process control level
Monocrystalline silicon sensor technology: Combining digital temperature compensation and nonlinear correction, it achieves a measurement accuracy of ± 0.075% FS, meeting the monitoring needs of the petrochemical industry for small pressure changes.
Quick response: Response time ≤ 10ms, real-time capture of pressure changes, providing reliable data support for safety interlock systems.
Environmental adaptability: to cope with extreme working conditions
Media compatibility: Supports highly corrosive media such as hydrogen, sulfuric acid, hydrofluoric acid, etc. The membrane material can be selected from Hastelloy, PTFE, etc.
Temperature range: working temperature -40 ℃ to 125 ℃, storage temperature -50 ℃ to 150 ℃, suitable for extreme environments from polar regions to desert oil fields.
3、 Industry Trend: The Future Direction of Intelligence and Greening
Intelligent upgrade: from data collection to predictive maintenance
Internet of Things Integration: Equipped with NB IoT/LoRa modules, remote monitoring and diagnosis are achieved, reducing the frequency of manual inspections.
AI algorithm application: By analyzing pressure data through machine learning, predicting equipment failures (such as membrane damage, seal leakage), and issuing maintenance warnings 30 days in advance.
Green Energy Saving: Reducing Full Life Cycle Costs
Low power design: Operating current ≤ 3mA, supports solar power supply, suitable for remote areas (such as offshore drilling platforms).
Mercury free filling: replaces traditional mercury pressure gauges, complies with environmental regulations such as RoHS and REACH, and reduces toxic substance emissions.
Modular design: enhancing device versatility
Quick changeover: By replacing the sensor module, quick adaptation to different ranges and media can be achieved, reducing downtime.
Standardized interface: Supports communication protocols such as HART, Modbus, Profibus, etc., making it easy to integrate into existing DCS/SIS systems.
4、 Selection suggestion: Accurate decision-making from scenario requirements to parameter matching
Classification of Explosive Environments
Select explosion-proof level based on gas group (IIA/IIB/IIC) and temperature group (T1-T6), such as Ex ia IIC T6 certification required for coal mines.
Matching of medium characteristics
Strong acid/strong alkali medium: Use Hastelloy or PTFE membrane;
High viscosity medium: Adopting a large-diameter design (such as M20 × 1.5 thread) to prevent blockage.
Output signal and range
4-20mA signal: Strong anti-interference, suitable for long-distance transmission;
Range design: Covering 1.5 times the maximum working pressure, with a safety margin reserved.
Explosion proof pressure transmitterMaintenance and Calibration
Regular calibration: Use a standard pressure source (such as a piston pressure gauge) for zero and full-scale calibration every 6 months;
Troubleshooting: Check the power supply (24V DC ± 10%), signal line for open circuit, or sensor damage when there is no output.