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Boiler blowdown, conductivity controller Lakewood Instruments model 1575e., controller only p/n 1229239


$ 1,289.00

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Boiler water conductivity controller, designed to measure the hot boiler water conductivity (sensor SR2) and open or close a motorized ball valve, that will drain water from the boiler. The automatic control of water conductivity allows the boiler to operate at safe levels of water concentration with the minimum amount of energy loses. Read article here for more details.

The sensor works up to 600 psi and 486 Deg F. Orifice plate needed to assure the integrity of the sensor. Below the available kits

Part Number 1229239 is just the Model 1575e Controller only

Use code CCFTWZV2NJG3  for an instant 15% discount on checkout!

Lakewood Instruments boiler blowdown, conductivity controller 1575E , including controller, SR2 & PLKT plumbing. just add a motorized ball valve and you are good to go.

PLKT Plumbing kit. 1⁄2” sample/cycle and continuous sample kit
Includes unions, orifice plates, cross, tee, and manual block valve only

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.

    Watch this video to see the 1575e in operation! Click HERE

    • 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, flow switch input, 4-20 mA output,
    and remote conductivity input via 4-20 mA are all standard features.
    • 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

    500-8000 µS for Boilers


    Conductivity sensor

    2 electrode


    Conductivity Resolution

    ± 10 µS (conductivity <5000 µS)


    Temperature comp.

    ± 100µS (conductivity <5000 µS)


    500NTC, NONE


    Accuracy & repeatability

    ± 1.0%





    Auto/Manual outputs

    Menu selectable



    16 tactile push-buttons



    illuminated 128x64 pixel LCD


    Drum Switch Inputs

    2 digital contact inputs


    Water meter inputs (2)

    Contact head, paddle



    wheel or turbine


    Max. blowdown time exceeded


    Output Signal

    and relay run time exceeded


    One 4 – 20 mA, isolated or



    non-isolated optionally powered



    output for conductivity




    Input Signal

    One 4-20 mA, non- isolated



    internally powered input for


    Output relays



    4, 3 selectable use,


    Relay ratings

    1 blowdown


    3A each, 10A total



    120/240 VAC 50/60 Hz



    32° - 120°F (0 - 49°C)



    NEMA 4X, ETL





    Max Pressure

    600 psi (41.3 bar)

    Max Temp

    486°F (252°C)

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