MEZOLEN ultrasonic flowmeter is widely used in the chemical industry. This time, it was used in the SIS renovation project of a residual oil hydrogenation unit in a chemical enterprise in Panjin. The MF7080EX... HT ultrasonic flowmeter was adopted and participated in the system interlocking control.
The process conditions are a diameter of DN100, carbon steel pipeline material, temperature of 120 ℃, applied in key parts of the device, and the measurement results are stable and reliable. This ultrasonic flowmeter has no movable parts, requires minimal maintenance, and can perform self calibration operations to adapt to various changing working conditions.
The core microprocessor provides patent protected digital signal encoding and related detection programs, automatic adjustment of changes, fluid properties, and dynamic configuration operation software to simplify programming.
SIS Safety Instrumented System
1
Strong reliability
The Safety Instrumented System (SIS) utilizes logic controllers, which have high reliability and can fully meet the safety protection requirements of chemical production.
The logic controller of SIS safety instrumented system usually improves the stability of system functions through redundant design and other methods. Therefore, in any situation where a chemical production plant may cause a safety situation, the logic controller can immediately make accurate judgments on the situation and quickly enter the operating state from the sleep state.
This also means that the majority of faults in chemical production facilities can be detected in a timely manner by the Safety Instrumented System (SIS) and dealt with by stopping operation, and potential safety accidents in chemical production can be effectively avoided.
Fast response speed
2
Due to the strong danger and complexity inherent in chemical production, if safety hazards are not effectively controlled in the first place, once a chemical production safety accident occurs, it will quickly spread and cause significant impact.
Compared with other chemical production control and safety protection devices, the faster response speed of Safety Instrumented System (SIS) can minimize the impact of safety hazards.
Generally speaking, due to the varying levels of danger in different chemical production facilities, different requirements will be put forward for safety protection devices.
If the safety of the safety protection device is insufficient and the probability of failure is high, then the safety of chemical production cannot be guaranteed. From this perspective, due to the safety instrumented systemSISIt has a clear safety integrity level, and the determination of this safety integrity level is directly related to the probability of system failure.
