Introduction:
It is the main accessory of the regulating valve and is usually used in conjunction with pneumatic regulating valves. It receives the output signal of the regulator and then uses its output signal to control the pneumatic regulating valve. After the regulating valve is activated, the displacement of the valve stem is fed back to the locator through a mechanical device, and the valve position is transmitted to the upper system through an electrical signal.
Principle:
1. The SAMSON locator takes the valve stem displacement signal as the input feedback measurement signal, and compares it with the controller output signal as the set signal.
2. When there is a deviation between the two, the output signal to the actuator is changed to make the actuator move, establishing a one-to-one correspondence between the displacement of the valve stem and the output signal of the controller.
3. The manipulated variable of this control system is the output signal from the locator to the actuator.
feature
1. High precision: Adopting advanced manufacturing processes and precise assembly techniques to ensure positioning accuracy and stability.
2. High reliability: Using high-quality materials and advanced sealing technology to ensure that the locator can operate stably for a long time even under harsh working conditions.
3. Intelligence: Some models of locators have intelligent configuration setting functions, which can easily set and modify parameters, improve control accuracy and flexibility.
4. Easy to maintain: The structural design is reasonable, easy to disassemble and clean, and convenient for users to maintain and upkeep.
Debugging and installation
Debugging: Set and debug the parameters of the locator according to specific debugging instructions and steps. For example, when debugging the Samson 3730-3 valve positioner, it is necessary to connect instrument air and electrical signals, determine the valve action mode through the actuator safety action reset switch, and then rotate the knob according to specific steps and press to confirm to set parameters.
Installation: The locator should be installed in a stable and easy to operate position to ensure reliable connection with the regulating valve and actuator. During the installation process, attention should be paid to the installation direction, connection method, and sealing of the locator.