Hefei Yisi Trading Co., Ltd.

General agent of German Siemens positioner in China_Hefei Yisi Trading
Detailed description of German Siemens positioner
Characteristics
Compared with conventional products, the series of intelligent electrical valve positioners have Many unique and practical advantages, such as:
? Simple installation, automatic initialization (automatic adjustment of zero position and stroke range)
? Easy operation
Simplicity is achieved using three buttons and a two-line display Operation and programming of )
? Numerous functions (such as parameterization and limit values) can be realized through simple configuration
? For self-diagnostics of valves and actuators
? For linear and quarter-turn actuators The same model of valve positioner
Application
Positioner is mainly used in the following fields:
? Chemical industry
? Power plant
? Paper and glass
/> ? Water and sewage
? Food and pharmaceuticals
? Offshore platforms
The valve positioner is an aluminum housing, used for single-acting actuators and non-hazardous areas, and passes ~ signal Control
During initialization, the microprocessor automatically determines the zero point, maximum stroke, action direction and positioning speed of the actuator, and uses these to determine the minimum pulse time and dead zone to optimize the control effect. The characteristic of low air consumption is that it consumes very little air. Traditional positioners consume a lot of air. The use of modern piezoelectric technology only consumes gas during action, which means that it can recover its investment in a very short time. Rich diagnostic functions have detection functions and can report a variety of rich information on changes in actuators and control valves. This information is very important for the diagnosis and detection of control valves and actuators.
Measurement (some extreme values can be adjusted) and monitoring functions can be realized, including:
? Stroke accumulation
? Number of stroke direction changes
? Alarm count
? Dead Zone self-adjustment
? Valve limit position (e.g.: seat wear)
? Number of operating hours at maximum and minimum temperatures (according to temperature range)
? Number of piezoelectric valve operations
> ? Valve positioning time
? Actuator leakage
Function
The working principle of the smart electric valve positioner is completely different from the traditional positioner. The working method uses a microprocessor to compare the given value and position feedback. If the microprocessor detects a deviation, it uses a five-step switching program to control the piezo valve, which in turn regulates the flow of air into the actuator chamber. The microprocessor outputs an electronic control command to the piezoelectric valve based on the size and direction of the deviation (given value and position feedback signal). The piezoelectric valve converts the control command into a pneumatic displacement increment. When the control deviation is large (high-speed area), the positioner outputs a continuous signal. When the control deviation is small (low-speed area), the positioner outputs a continuous pulse. If the controller deviation is within the allowable error range (adaptive or adjustable dead zone state), there will be no control command output. The positioner is fixed to a linear or angular travel actuator using appropriate mounting components. The linear or angular displacement of the actuator is detected through the mounted components and connected to a wear-resistant conductive plastic potential converter. Angular errors detected by components mounted on linear actuators are automatically corrected. When connected in a two-wire system, it derives its power entirely from the given signal. Pneumatic valve group piezoelectric valves with pre-controlled piezoelectric valves can release very short control pulses and thus achieve high positioning accuracy. The leading component is a piezoelectric flexible switch, which is connected with the main control air circuit. Piezo valve groups have an extremely long operating life. On-site operation On-site operation is completed by built-in and input buttons. Automatic, manual and configuration can be switched via buttons. In manual mode, the valve can be driven throughout the entire range. Automatic initialization can be quickly configured using a simple configuration menu and can also be adjusted via the automatic initialization function.
Hefei Yisi Trading Co., Ltd. specializes in selling world-renowned brand welding machines, frequency converters, vacuum pumps, fluid equipment, counters, instruments, pumps, valves and various dynamic products. The imported spare parts we sell are purchased directly from other manufacturers and implement a flat sales model, saving customers time and costs. Our goal is that domestic users can find us when they encounter difficulties and problems in purchasing foreign spare parts.
Hefei Yisi Trading Co., Ltd.
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Address: No. Jinzhai Road, Hefei Municipal Government District Jinqian Commercial Plaza Office