AEGIS II Controller

The most innovative and flexible water treatment controller available

The AEGIS II provides reliable control and offers the most flexible communication options to optimize efficiency and profitability for all your cooling, boiler, and waste water or disinfection applications.

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  • Built In Wireless Access Point and Ethernet
  • Updated Keypad design for easy menu navigation
  • Enhanced responsive browser views for Smart Phones and Tablets
  • Flurometer connection via 4-20mA or direct Modbus
  • 8 digital inputs for multiple flow meters for status indicators
  • 10 Status LED's
  • Integral Data Logger
  • Optional Modbus/BACnet communications
  • 9 Flexible control outputs include: ON/OFF setpoint or time based control & Frequency (Pulse) Proportional or volumetric control
  • Conductivity, pH, ORP, Corrosion, Chlorine, Bromine, PAA, Chlorine dioxide, Fluorescence and more

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Rating - Detail Notes
Analog-Digital I/O
Conductivity Serial Sensor Tower & Integral Flowswitch sensors Default tower sensor includes 1GPM integral flowswitch & temperature
Conductivity Sensor Boiler & Condensate sensors Standard Sensor
Fixed Temperature Sensor Input Thermal compensation for both pH and Conductivity Displayed as oF, oC or oK
Fixed 4-20mA Current Loop Input Assignable to control any relay or variable frequency control Single point calibration if 4mA=0
4-20mA Current DC isolated, Manual & Auto modes, Interlocking, Alarm Each optional current output uses a dual sensor card slot
Manual-Inventory-Inputs Track drop counts, inventory, tank level, ppm Alarmed delay prevents premature system ppm alarms
Communications User Interface
Keypad-LCD 9 Key tactile feedback, 3 Function keys, 4 line Backlit  
10/100 Mbps, TCP/IP Ethernet, wifi (Optional LAN, Future Modbus & Modbus RTU) HTML micro web server with user definable IP address Static IP, Browser shows controller in real time
Controls for ON/OFF & Variable Frequency
Sequential Volume Setpoints Feed a fixed volume for every make-up controls Meter only, fault tolerant feed controls
Blocking Any of 9 controls may block any other control Prevents incompatible concurrent controls
Interlocking Up to 4 contact sets can be ‘AND’ed or ‘OR’ed Relays & Frequency controls OFF when contact set opens
Biocide Event Controls Each of 9 controls includes 28 timed events Each control selectable for 1, 7 & 28 days
Electrical 100-240 VAC, 50/60 Hz, Single Phase Universal Power Supply
Fusing for 2 AC powered loads 6.3 Amps @ 250VAC Alarm on open AC load fuse
Surge Suppression 5 snubbed contacts RC / Varistor on AC line input
Enclosure Non-metallic, IP 65 / NEMA 4X 13.46” x 8.94” x 3.07” (342 x 227 x 78 mm) (WxHxD)
CSA: Pending CSA tested to comply with UL (Pending)


Addendum: Aegis II Communication Driver Card Manual Rev. G | Part #: 1079218 | Updated: 3/15/19


Application Cut Sheet: Municipal Water & Wastewater Instrumentation | Part #: 7750028 | Updated: 10/21/20
Application Cut Sheet: Water Treatment Systems | Part #: 7750027 | Updated: 6/10/20
Cut Sheet: AEGIS II Controller | Part #: 7750303 | Updated: 8/17/21

Manuals And Instructions

Manual: Aegis II Browser Manual Rev.E | Part #: 1079218 | Updated: 11/20/19
Manual: Aegis II Installation And Operating Manual Rev.F | Part #: 1079218 | Updated: 4/3/20

Product Catalog - AWT Market

Catalog: 2022 Mid-Year AWT Catalog | Part #: 7750014 | Updated: 9/10/22

Quickstart Guide

Quickstart Guide: Aegis II Quick Start Guide | Part #: xxxxxx | Updated: 10/24/18

Sensor Instructional Videos

Video: Changing Electrolyte In Sensors | Part #: xxxxxx | Updated: 7/28/21

Part Number: 1079218 (USB Drive - contains both the O&M and Browser WPS)

Firmware Updates

Version Update Summary Release Date
  • WARNING: It is required to have Remote HMI version 10 or higher
  • UPDATE SUMMARY: added features: CLT,CDE,LFT,LMP01,LMP001 sensor Types, Digital Input ON/OFF Delay, Control based on Turbine Meter Flow Rate
  • Fix: CU Command, Transition from “Timed_Modulation” to “Timed_cycling”
November 11, 2019
  • WARNING: It is required to have Remote HMI version 10 or higher
  • Bug Fix: LSI Calibration, improved communication
June 04, 2019

Remote HMI Updates (Web Browser HTML Updates)

Version Update Summary Release Date
  • Bug Fix: Trend Header, setpoint marker on Measure panel bar graph, varying Cycle setpoint locations
November 06, 2019
  • Bug Fix: Improve initial downloading
June 07, 2019