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b> : : . >Advanced Technology
: : . >British Spirax Sarco
: : . ><>Locator
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: : . >Original imported
: : . >Spirax Sarco
: : . >Pneumatic valve positioner
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: : . >, UK< c<>Spirasa
: : . >gram locator
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: : . >, Shanghai
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: : . >Spirax Sarco
: : . >Locator
: : . >,
: : . ><:>
b> : : . >Product model:
: : . ><>Positioner Pneumatic valve positioner< <>Electrical positioner<
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b> : : . >Product manufacturer: UK< c<>Spirax Sarco
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b> : : . >Product Origin: United Kingdom
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b> : : . >Product Seller: Shanghai Rihe Valve Co., Ltd.
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b> : : . >Product sales place: Shanghai, China
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b> : > UK Spy Sarko<<>Positioner
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b> : :: . >Electrical valve positionerEdit Electrical valve positioner<(<>Also known as: pneumatic valve positioning The regulator) is the main accessory of the regulating valve. It is usually used in conjunction with the pneumatic regulating valve. It receives the output signal of the regulator, and then uses its output signal to control the pneumatic regulating valve. When the regulating valve acts, the displacement of the valve stem is passed through the mechanical The device feeds back to the valve positioner, and the valve position status is transmitted to the upper system through electrical signals.
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: :: . >Working principle The electric valve positioner is the main accessory of the control valve<.<>It takes the valve stem displacement signal as the input feedback measurement signal<,< >Use the controller output signal as the setting signal and compare it. When there is a deviation between the two, change the output signal to the actuator to make the actuator act. This establishes a relationship between the valve stem displacement times and the controller output signal. One correspondence. Therefore, the valve positioner forms a feedback control system that uses the valve stem displacement as the measurement signal and the controller output as the setting signal. The manipulated variable of the control system is the output signal of the valve positioner to the actuator
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