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NE700 Type Valve Positioner
Neles-pattern NE-series proportional positioners for cylinder or diaphragm actuators, rotary or linear, in vibrating service.
The NE700 series works from a milliampere signal and produces a proportional pneumatic output. Its selling point in the source documentation is mechanical: few parts, small moving mass, rigid mounting and a balanced force coil, which is what keeps it accurate on severely vibrating equipment. Dynamic behaviour is tuned by pilot valve size.