NE700 Type Valve Positioner

NE Series Electro Pneumatic Valve Positioner

NE700-series proportional E/P positioner, Neles pattern

The NE-series positioner works from a milliampere controller signal and gives a pneumatic output proportional to it. Nominal input resistance is 190 ohms, and the moving force-coil assembly is low mass and accurately balanced so the unit keeps working under severe vibration.

Proportional pneumatic output from a standard mA DC input
Nominal input resistance 190 ohms
Low-mass, balanced force coil for severe vibration service
Field reversible: direct or reverse acting by turning the changeover piece and feedback cam
Dynamic behaviour changed by choosing a different pilot valve size (Ø4 mm, Ø6 mm, Ø6 mm HC)

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Typical duty: Cylinder or diaphragm actuators, rotary or linear, in throttling service that demands repeatability under vibration.

Specification

NE700 series ordering and technical data (data sheet published on the source site)
Product group	NE — electro-pneumatic positioner
Input signal range	4–20 mA or 0–20 mA
Nominal input resistance	190 Ω
Pilot valve options	Ø4 mm (1/4 NPT), Ø6 mm (1/4 NPT), Ø6 mm HC (3/8 NPT)
Action	Double and single action (no sign) or single action linear (A)
Standard enclosure	IP54, PG11 conduit entry, -25 to +85 °C
Option R	Water and dustproof enclosure IP65 / NEMA 4 and 4X
Option W	Better vibration resistance — special flexure pivot and diamond coated pilot
Option H	High temperature construction, Viton diaphragms and seals, -10 to +120 °C
Option S1	Attachment face to VDI/VDE 3845 with H-clip
Accessory K	Filter regulator for supply air, filter size 5 µm
Conduit nipples	CE01 PG11 / 1/2 NPT, CE02 PG11 / M20×1.5, CE03 PG11 / R1/2 (PF1/2)

Technical background

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. This electro pneumatic positioner is proportional positioners for control valves. NE valve positioner is an electro-pneumatic positioner 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. 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. FEATURES Excellent vibration resistance Rugged construction, few parts, small moving mass, compact design and rigid mounting provide outstanding vibration resistance.

Field reversible Valve Positioner can be set for direct or reverse-acting modes by simply turning around the changeover piece and feedback cam without touching or changing tubings between actuator and positioner. Split-range and reverse actions are standard on the feedback cam. Easy and fast to calibrate Calibrations can be easily made with the positioner cover removed.

Questions buyers ask

How is the acting direction reversed in the field?

By turning around the changeover piece and the feedback cam — no replacement parts are needed.

What ordering options matter most?

Pilot valve size (4/6/7), action code, and the option letters — R for IP65 water and dust proof, W for better vibration resistance, H for high-temperature Viton construction.