Features

•Universal AC power 80-265 VAC 50/60Hz
•4 line x 40 character backlit Liquid Crystal Display
•18 key keypad with integral alarm light
•Programmable time delays and set points
•Real time clock with battery backup
•Non-volatile set point memory
•Audible alarm with timed Alarm silence
•English or metric readings
•NEMA 4X hinged enclosure
•Plug-in terminal strips
•Panel or frame mount
•Input/output indicator LED’s
•Preprogrammed RO functions

Standard Functions of the Series 250 Controller are the Monitoring and/or Control of:

•Feed water valve relay
•RO and auxiliary pump control relays
•Permeate and feed TDS/Conductivity
•Membrane flush valve relay
•Permeate divert valve relay
•Temperature
•Operating hours
•Low feed pressure switch
•High pump pressure switch
•Pretreatment lockout
•Flow meter interface for permeate and concentrate
•Ro storage tank switches (1 or 2)
•Ro storage tank low switch
•Remote alarm output
•RS-232 serial port output

Optional Features

Inputs
•Eight (8) switch
•Eight (8) 4-20mA analog
•One (1) Conductivity/Resistivity
•Two (2) pH
•Two (2) flow

Outputs

•Eight (8) relay
•Two (2) 4-20mA analog

Communications

•RS-232
•RS-485
•Modem
•Graphical display

Optional Accessories and Sensors

•pH sensors with display and alarm set points

•IEC motor starters and control transformers

•Flow sensors to display flow in GPM or LPM, with %recovery displayed and alarm set points for high and low flow rates

•Pressure sensors allowing display on LCD of pressures and differential pressures with programmable set points for high, low and differential pressure alarms

Specifications

Power:

80-265VAC, 50/60Hz

Environment:

-22°F to140°F,-95%RH,Noncondensing

Display:

4 line x 40 character Liquid Crystal Display

Enclosure:

16” x 14” x 8” Nema 4X (Larger enclosures are required to accept motor starters)