SlimFlex 5 Controller

The most innovative and flexible water treatment controller available

Introducing flexible programming with ProMinent's SlimFlex 5 Built-in WiFi Hotspot. Enhanced, responsive browser views for smart phones and tablets makes programming fastand easy! Built-in Ethernet and integral data logger creates the total communications packagefor all of your cooling tower and boiler applications.


  • 5 Flexible control outputs include: ON/OFF setpoint or time based control
  • Built In Wireless Access Point and Ethernet
  • New Keypad design for easy menu navigation
  • Enhanced responsive browser views for Smart Phones and Tablets
  • No need to choose - pH and/or ORP along with conductivity all available on the SlimFlex 5 controller
  • 6 digital inputs for multiple flow meters or status indicators
  • 6 Status LED’s
  • 5 Powered relays (2 relays are powered - 3 relays are dry contacts and they can be powered)
  • Integral Data Logger
  • Conductivity, pH, ORP and Pyxis
  • Email out data and alarms

Image Download

Note: Click on image to download


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
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 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 5 controls may block any other control Prevents incompatible concurrent controls
Interlocking Up to 4 contact sets can be ‘AND’ed or ‘OR’ed Relays control OFF when contact set opens
Biocide Event Controls Each of 5 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)


Cut Sheet: SlimFlex5 | Part #: 7750308 | Updated: 9/5/18

Manuals And Instructions

Browser Manual: SlimFlex 5 Browser Manual Rev.D | Part #: 1079218 | Updated: 11/20/19
Manual: SlimFlex 5 Installation And Operating Manual Rev.E | Part #: 1079218 | Updated: 43924

Product Catalog - AWT Market

Catalog: AWT Catalog | Part #: 7750014 | Updated: 7/16/21

Firmware Updates

Version Update Summary Release Date
  • WARNING: It is required to have Remote HMI version 10 or higher
  • Added Feature: Alarm Relay could be set ‘OPEN on Alarm’ or ‘CLOSE on alarm’
  • Fixed bug: reporting from previous year
February 10, 2020
  • WARNING: It is required to have Remote HMI version 10 or higher
  • Added Feature: Log-in Security - only one active user permitted per user ID
February 26, 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