Press Release Summary:
Electric Stroke Controller regulates flow rate of metering pumps in response to 4-20 mA dc control signal, 0-5 or 0-10 Vdc analog control signal, or can be operated from incremental dry contact closures. Color coded pushbuttons, LEDs, and single adjustment knob facilitate configuration and calibration. Available outputs include 2-wire analog position feedback signal and 4 adjustable solid state contact closures to monitor stroke positions.
Original Press Release:
Electric Stroke Controller from Neptune Now Features Digital Programmability
Lansdale, PA, October 2006 - Neptune Chemical Pump Co., Inc. introduces an all digital version of its popular Electric Stroke Controller, which automatically regulates the flow rate of Neptune Metering Pumps in response to a 4-20 mA DC control signal. The unit also accepts 0-5 VDC and 0-10 VDC analog control signals or can be operated from incremental dry contact closures.
The new actuator features an identical housing structure to its analog predecessor, allowing for easy upgrade of older pumps. Neptune's new electric digital actuator is ideal for any application where pump flow must be automatically proportioned or varied.
Neptune's fully programmable Digital Stroke Controller improves on the older design by simplifying configuration and calibration through use of color coded pushbuttons, LEDs and a single adjustment knob. Both customer calibration and factory default settings are retained in memory even during power failure. Other improvements include additional pre-selected strategies for Loss of Analog Control Signal, and eliminating use of limit switches in Zero and Span (control range) configuration. Increased analog input impedance allows either series or parallel wiring of multiple units from a common control signal.
Available outputs include a 2-wire analog position (feedback) signal and four adjustable solid state contact closures to monitor stroke position(s). Unit can be manually operated on power failure.