Used to the position of the valve at Now at

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quick exhaust valves Used to compare the digital = (Now-Zero) / (End-Zero) x 4095.
     &n bsp;  Including, Zero, Now, End Zero, Now and the End of the A / D conversion values ??represent.
        For example in the valve is fully closed at Zero "zero", that is, the opening is 0%, valve feedback is displayed as 4mA practical after the A / D converter, where the corresponding figures of 200; at the valve is fully open End determined as "full", i.e. the degree of opening is 100%, the valve opening degree of feedback display to 20mA, while the actual through the A / D converter, where the corresponding digital quantity is 1000. Used to the position of the valve at Now at, the corresponding figure of 800. When the valve control signal input of 12mA, after A / D conversion becomes 3V, and then through the A / D conversion to digital is 2448. The direction of the operation of the motor to be determined through comparison of the control signal and the feedback signal. That is used to compare the digital = (Now-Zero) / (End-Zero) × 4095 = 3069. Obviously 3069> 2448 motor reversal. gas valve China Manufacturer