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The Essex Engineering Model 2410 Pump Controller is designed specifically for controlling the filling and emptying of tanks, vats or basins by means of one or more pumps. It accepts standard input signal levels of 1-5VDC, 4-20 mADC and special ranges from a continuous level or pressure transmitter.
The incoming analog process signal is displayed on the front of the instrument via a 3-1/2 digit LED readout. This same display is also used to set the various turn-on and turn-off points for the control and alarm functions.
Four outputs are available to activate remote relays. Each has an independent turn-on/turn off setting of 0 to 100% of full scale. A unit indicator lamp is illuminated when its output is energized. Turn-on and turn-off points are set by means of their associated 25-turn potentiometers on the face of the instrument. Each point is set via the read and select pushbuttons which will illuminate a red bar adjacent to the potentiometers being calibrated. The output relays are remote and use low voltage control in order to avoid high voltage transients when the line voltage devices are switched on and off.
Fill/empty action is field selectable for each control point via slide switches within the unit. Three alarms, two of which have an LED indicator, are provided. These are high and low level with the signal loss causing the low level LED to flash when activated. The 2410 Controller may be field programmed, via internal DIP switches, to de-energize the control outputs when any alarm condition occurs. An external input signal is also available to deactivate the control and/or alarms when activated.
A time delay, field adjustable from 0.2 to 60 seconds is provided to inhibit control and alarm action. This allows system parameters to stabilize before controller initiates a response. An optional time delay board is also available to provide timing before activation to override fluctuating signals.
Multiple 2410 units may be connected together to provide many control points from the same signal.
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