NE700 Electro Pneumatic Valve Positioner
Model NE700 and NP700 are proportional positioners for control valves. The NP is a fully pneumatic unit while the NE is an electro-pneumatic unit that provides pneumatic output proportional to a standard milliampere DC input. Both units can be used with either cylinder or diaphragm type actuators for rotary or linear valves to provide excellent repeatability and accuracy in a wide range of throttling applications.
NE700 Electro Pneumatic Valve Positioner Gallery
Packaging detail images
Packaging detail images
Packaging detail images
Packaging detail images
Packaging detail images
Product Description
Features
● Excellent vibration resistance: Rugged construction, few parts, small moving mass, com-pact design and rigid mounting provide outstanding vibration resistance.
● Field reversible: Positioner can be set for direct or reverse-acting modes by simply turning around the changeover piece and feed-back cam without touching or changing tubings between actuator and positioner. Split-range and reverse action sare standard on the feedback cam.
● Easy and fast to calibrate: Calibrations can be easily made with the positioner cover removed. You can fine-tune zero and range adjustments with minimal effect on set points.
● Fast response times: Multiple pilot valve sizes are used to match positioner capacity compatibility with actuator stroke volume, mini-mizing response time.
● Stable operation: Changes in supply pressure and valve load have minimal effect on positioner operation.
● NE positioners: These electro-pneumatic positioners operate on a milliam-pere 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 (see table in page 3) 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 (see table in page 3).
● 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.
● CE-mark: NE700 positioners carry the CE-mark for countries which belong to the European Economic Area.
Options:
● Protection through constructional safety ATEX Il 2 G c (only NP series)
● Flame proof enclosure ATEX approved (Il 2 G EEx d IIC T4/T5/T6) or FM and CSA approved (Class I, II, Div. 1, Gr.B – G) (only NP series).
● Dust proof enclosure (IP 65).
● Electric plug connector DIN 43650/IS04400.
● High temperature construction up to +120°C/+250°F.
● Natural gas service.
● Pressure gauge kit.
● Bypass kit (only NP series).
● Filter regulator.
● Attachment to rotary actuators to VDI/VDE 3845.

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NE700 Electro Pneumatic Valve Positioner Full-Service Support
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