73N-B内置式阀门定位器

西门子73系列内置式阀门定位器 

This line of compact pneumatic valve positioner instruments incorporates a single-axis, force-balance principle of operation to ensure accurate and stable control valve positioning. In all cases, including bottom-loading applications, a Model 73 Built-In Pneumatic Valve Positioner is mounted directly on the topwork of the valve, with no external levers or other exposed mechanisms.

By selecting the appropriate range spring from the wide selection, almost any combination of valve stroke (from 1/4" to 4") and instrument span (from 2 to 24 psi) can be obtained.

• Single-axis, force-balance principle of operation, ensures accurate and stable positioning

• Feedback circuits direct the actuator's position, ensuring adherence to the control instrument signal

• Range spring capability accomodates a wide variety of valve strokes and instrument spans

常见型号：

73N12F   73N24F  73N-FR   73N-B   73N-B1

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