TZED300 series intelligent valve positioner is a product with a microprocessor control mechanism as the core to realize intelligent control of regulating valves. In addition to completing the main functions of converting the regulator output current signal (4-20mA) into the pneumatic signal for driving the pneumatic control valve and HARTT, it also has the function of automatically correcting the unbalanced force of the valve stem friction valve core during operation to improve the working accuracy of the control valve. , ensuring that the regulating valve achieves the correct positioning advantage according to the regulator output signal.