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So how can an intelligent valve positioner be replaced online? The little housekeeper has summarized a detailed set of steps for everyone, hoping it will be helpful. 1. Obtain the data parameters of the intelligent valve positioner to be replaced. It can be read directly using a HART handheld device ； PDM software can also be used to upload the parameters of field locators to a computer or laptop via HART communication, or into a system, thereby obtaining the required data parameters. 2. Use pneumatic or mechanical methods to fix the actuator in its current position; mechanical methods are generally used for this purpose. If there is a handwheel, switch to manual control. 3. Read and record the LCD display value of the replaced valve positioner. If power has already been lost, record the current actual valve position and remove the valve positioner. 4. Install all accessories on the new locator, then attach the new locator to the control valve. Download initialization parameters and other data to the locator. 5. Ensure the proportional regulator remains the same as before replacement. 6. Connect the instrument signal, and use the dial to make the LCD display the valve position match the value recorded before it was removed. 7. Remove the mechanical locking device; once the newly installed intelligent valve positioner is set to AUTO, it can be put into normal use. The above provides a detailed explanation of the online replacement process for intelligent valve positioners. If you have any further questions, feel free to leave a message. New content will be updated regularly, so please stay tuned!