A413311 NELES AUTOMATION VPU POWER SUPPLY MODULE

A413311 NELES AUTOMATION VPU POWER SUPPLY MODULE

Product Details

NE positioners

These electro-pneumatic positioners operate on a milliampere signal from a controller. They accurately position the control valve assembly in response to a change in input signal. The nominal input resistance is 190 ohms. The moving force coil assembly has low mass and is accurately balanced to assure proper function even in severely vibrating applications. The dynamic behaviour of the positioner can be changed by choosing different size pilot valves and adjusting the internal gain.

NP positioners

The NP positioner operates on a pneumatic signal. It responds to a change in pneumatic instrument signal and accurately re-positions the control valve assembly. The diaphragm piston and feedback spring are force balanced. The rugged beam and few parts provide excellent vibration resistance. The positioner capacity can be changed by choosing different size pilot valves.

NE and NP positioners

The direction of operation for NE or NP positioners can be changed simply by reversing the built-in changeover piece and the cam. External piping need not to be modified. The same housing is utilized for both styles of positioner and in both double-acting and single-acting versions.

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