flexible system requirements cut-off valve and diagnosis, process itself through their function to record the valve and process image. When the valve is installed for the first time, the valve of the initial startup performance or process itself, Through the a - Travel flow features drawing) The image will be taken. When the Industrial Valves is to continue the operation, the valve and the cycle of the system performance monitoring and initial startup of the image. When these functions or unexpected failure due to normal wear and began to hesitate not timing, flexible system will open and now the problems existing in the warning to the user, in the main system or valves require preventive maintenance or to take corrective action before failure. System can, for example, in the seat is located in the closed position images leaked ( Monitoring downstream pressure) 。 Flexible system to the initial image and leakage current body image. If the current reading value closed due to wear and tear or damage the components or adjusting components and exceed ANSI leakage level ( Preset conditions) Close to the user, the system warning device needs to be maintained. Through monitoring the upper and lower pressure chamber of the actuator, flexible system can evaluate the packing compression and the loss of actuator seal, or identify not smooth stem travel, the valve stem can point closure components or adjustment problems. If used in the system analog positioner can monitor hysteresis, repeatability and linearity.

because images can be process, the total system function can be affected by upstream or downstream equipment, can be monitored and evaluated. For example, if the upstream pump start slow Man upstream pressure drops, and reduced to the limit of the qualified at a certain point, when the flexible system found pressure drops in the preset values, it can inform the user, the user can prepare the necessary numerical or actuator for maintenance.

security management is another use of flexible system, because they can be programmable set, the set limit be hindered by system disturbance in process to notify the user. In addition, the system can monitor and analysis in the process of start and shutdown process, any sudden alarm in violation of the normal operating conditions. Various failure modes can be flexible in the system program, the program can provide a variety of different failure modes: air or power loss, failure process and the command signal loss to raise.

another advantage of flexible system is data records, they have the ability in the book of the Chronicles of users within a prescribed time interval spirit process conditions. For example some flexible systems guy in 1 to 3 h s any time interval between the spirit within 300 line process conditions. These data record is normal, so the user can evaluate the process and find any interference and the abnormal situation.

a wide range of benefits of flexible system is often reflect the price of the flexible system, it may be for some other idiomatic actuator & other expenses; A sharp knife - Impact & quot; 。 But the user should look at the bigger the truth: flexible system to replace the controller, a separate temperature sensor and pressure sensor, a flow t, limit switch, line and circuit, etc. Together, directly installed on the control valve of the flexible system costs less than the cost of the sum of all equipments. The obvious problem is that it's flexible system only need - - A separate 24 v direct pang power source to operate electrical equipment, if only standard ac power source available, it may need some additional circuitry and converter.

the simplification of flexible system is the system installed on the actuator, but does not include the cut-off valve body in the process sensors ( Using this system installed in the existing sensor) , its essence is to form a powerful digital locator. This makes the flexible system as mentioned above a lot of superior function, but there is no single loop control on the dashboard. The advantage is low cost, and provide many flexible technology related to the flexible system.

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There are ample scientific evidence of reducing the risk of os&y gate valve.