Type YT-1000R Electro-pneumatic valve positioner is used for operation of pneumatic rotary valve actuators by means of electrical controller or control system with an analog output signal of DC 4 to 20 mA or split Ranges.
The electro pneumatic valve positioner can increase the output power of the regulating valve, reduce the transmission lag of the regulating signal, accelerate the movement speed of the valve stem, improve the linearity of the valve, overcome the friction of the valve stem and eliminate the influence of unbalanced force, ensuring Correct positioning of the regulating valve.
Commonly used actuators are divided into pneumatic actuators and electro pneumatic actuators, which can be divided into straight travel and angular travel.
The pneumatic motor of the electro pneumatic valve positioner can be steplessly adjusted. As long as the opening of the intake valve or exhaust valve is controlled, that is, the flow of compressed air is controlled, the output power and speed of the motor can be adjusted. The purpose of adjusting speed and power can be achieved. It can be rotated forward and reversed. Most air motors simply use the control valve to change the direction of the motor's intake and exhaust, which can realize the forward and reverse rotation of the output shaft of the air motor, and can change the direction instantaneously. In the forward and reverse conversion, the impact is small. One of the main advantages of the air motor reversing operation is that it has the ability to rise to full speed almost instantaneously. The vane-type air motor can rise to full speed in one and a half revolutions; the piston-type air motor can rise to full speed in less than one second. Using the control valve to change the direction of the air intake can realize forward and reverse rotation. The time to realize forward and reverse rotation is short, the speed is fast, the impact is small, and there is no need to unload the load
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