The Neptune Electric Stroke Control allows the capacity of any Neptune Series 500 or Series 600 "dia-PUMP" to be automatically controlled in response to a standard 4-20 mA process signal. Also accepts 0-5 VDC/0-10 VDC signal or digital pulse train inputs. One-piece controller- positioner mounts directly to the pump. No machining or any special drillings or tappings needed to retrofit pump. Ideal for water/wastewater, power and process industry applications...anywhere that pump flow must be automatically proportioned or varied.
Features and Benefits
Stroke position indicator on controller. (Also on optional remote control module.) Permits fast, easy visual check of pump stroke length.
Remote control unit (optional). Allows manual override and monitoring from remote location.
Switch reversible. Allows direct or indirect response to signal.
Separate signal and power entrance connections to terminal blocks.
Adjustable ratio. Great control flexibility.
Signal interruption "memory." If process signal is lost, unit can remain in its last position or move to a preset position.
Adjustable travel time: 15 seconds minimum
Input signal optically isolated from the line voltage. Eliminates inexact positioning which could be caused by extraneous electrical interference.
Alarm function relay monitors: 1) movement to max/min preset limits; 2) movement to adjustable upper/lower limits. Gives early warning to malfunctions or process upsets, allows for quick corrective actions.