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Model 1575e Conductivity Controller

Model 1575e 1229242 1575e Conductivity Controller on Mounting Plate


The Model 1575e uses the latest in microprocessor capability, giving the user a high level of application flexibility.  A large illuminated graphics screen, multiple inputs, and very easy setup characterize this new technology.  The Model 1575e is ETL approved.

 PART NUMBER 1229242 SHOWN-Cooling Tower Water Treatment Controller, Including Flow Switch Plumbing And Conductivity Sensor On A Mounting Plate




 1575e_Cutsheet              1575e MANUAL           1575e SPEC SHEET 



  • Removable power cord and receptacles for simple conduit installations.
  • Scheduled feed, which can use three relays for biocides or other chemicals.
  • Two (2) water meter inputs, two (2) drum switch inputs, conductivity input, a flow switch input, a 4-20 mA output, and a 4-20 mA input are all standard features.
  • new flashThe 4-20 mA input can be used with a transmitter for one of the following: remote conductivity, makeup conductivity, pH, ORP, percent, pressure, milliamps, flow rates, or traced chemistry control. 

                              This transmitter can be added in the field.

  • Designed with a single circuit board for better reliability and lower cost.
  • Large open shallow enclosure for easy wiring.
  • Ball valve delay feature allows accurate control of motorized ball valves.
  • Heavy-duty stainless steel domed numeric keypad and illuminated graphical display allow for quick and easy programming.  Steel domed switches improve the tactile sensing and life expectancy of the keypad.  LED indicators for power, alarm and relay status.



  • Easy to program with the Lakewood plain English, intuitive, and user friendly menu interface.
  • Controller can be used in boiler, cooling tower, or condensate applications when used with the appropriate conductivity sensor.
  • Single circuit board design improves reliability.
  • No add-on options.  4-20 mA output and feed schedule clock features are standard.





Conductivity range 50-10,000 mS Input Signal One 4-20 mA, non- isolated
Conductivity sensor 2 electrode internally powered input for
Conductivity Resolution ± 10 µS (conductivity <5000 mS) conductivity
±100 mS(conductivity > 5000 mS) Output relays 4, 3 selectable use,
Temperature comp. 500NTC, NONE 1 blowdown
Accuracy & repeatability ± 1.0% Relay ratings 3A each, 10A total
Deadband/Setpoint Programmable Power 120/240 VAC 50/60 Hz
Auto/Manual outputs Menu selectable Ambient 32° – 120°F (0 – 49°C)
Keypad 16 tactile push-buttons Enclosure NEMA 4X, ETL
Display illuminated 128×64 pixel LCD  
Drum Switch Inputs` 2

Water meter inputs (2) 

2 digital contact inputs Contact head, paddle wheel, or turbine 


Max. blowdown time exceededand relay run time exceeded

Sensors/PlumbingCooling Tower

 Max Pressure140 psi  (9.65 bar)@ 100 °

F or Max Temp140°F (60°C) Min flow1 gpm (3.785 Lpm) output for conductivity

Output Signal

One 4 – 20 mA, isolated  non-isolated optionally powered.

Ordering Options

Controller Options

1229239          Model 1575e Conductivity Controller Only.  (No Sensor or Plumbing).

 1229240          Model 1575e Cooling Tower Water Treatment Conductivity Controller, Including Conductivity Sensor and Sensor Tee.

1229241          Model 1575e Cooling Tower Water Treatment Conductivity Controller, Including Conductivity Sensor and Flowswitch Plumbing Assembly.

1229242          Model 1575e Cooling Tower Water Treatment Conductivity Controller, Including Conductivity Sensor and Flowswitch Plumbing Assembly on a Mounting Plate (12 X 18 in.).


Cooling Tower Options


1229239          1575e controller only, no sensor or plumbing



The Following Systems Include Sensor and Plumbing Assemblies

1229240    1575e with cooling tower sensor tee and sensor

1229241    1575e with cooling tower flowswitch and sensor

1229242    1575e with cooling tower FS and sensor on mounting plate

1269338    1575e with cooling tower sensor, flow switch, and Trace Sensor Kit

On a mounting plate



1167158           Sensor, Conductivity 2 elec w/20 ft Cable

1167157          Sensor, Conductivity 2 elec w/2 ft Cable

1169207          Sensor, Conductivity, 2 elec 4ft body

1167214          Plumbing, tee, 3/4 inch NPT

1107003         Plumbing, with 20′ FS, remote plumbing



1166418          O-Ring, for sensor and/or flow sight, set of 10

1169740         Red Ring replacement Kit set of two

1107004         Reed Switch w/20 ft of cable

1167266         Flow Sight set of five

1167234        Flow Float set of five

1107003        Plumbing, with 20′ FS, remote plumbing