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pH Cooling Tower Controller Microprocessor-Based
Model 2175 from Lakewood Instruments

USA Toll Free: 1-800-730-0302 Tel: 416-240-1920 -

Lakewood Instruments Model 2175 Microprocessor Based Cooling Tower Controller

Discontinued Model

LONWORKS Technology is the latest in microprocessor capability that gives the user the highest level of application flexibility. A large graphic screen, multiple inputs and very easy setup with easy field upgrade characterize this new technology.

* LONWORKS is a registered trademark of Echelon Corporation.


  • 4-electrode conductivity includes fouling compensation and alarm.

  • Integral flowsight & flowswitch lockout.

  • Records both makeup (MTR1) and blowdown (MTR2) water meter total gallons.

  • Configure blowdown water meter (MTR2) as second makeup meter.

  • Blowdown Relay options:

  • Bleed x gallons for every x gallons makeup

  • Bleed x minutes for every x gallons of makeup

  • Bleed by setpoint

  • Bleed by cycles of concentration with NCON/NCKT Option

  • Bleed by multi-setpoint selected with NCON/NCKT Option

    • Three user-selectable relay options (four additional with NRLY):
    • Feed by setpoint, direct or reverse;

    • Water meter actuated feed. MTR1, MTR2 or sum;

    • Feed after blowdown by percent of bleed time;

    • Feed by percentage of time;

    • Schedule feed timer (-RTC Option);

    • General alarm contact.

    • Three security levels:
    • View only

    • Operator

    • Technician

    • Four different languages.
    • English Spanish (standard)

    • English French (optional)

    • English German (optional)


    • Multiple control options in a single economical package.

    • Very accurate control of chemical feed and cycles of concentration.

    • Very low maintenance.

    • Tolerant to power surges and brownouts.

    • Power cord, plug outlets and attached plumbing make installation easy. There is plenty of protected room inside the enclosure for electrician wiring.

    • Indicates when to clean sensor.

    • Very accurate monitoring of the evaporated water.

    • Feeds chemical AFTER blowdown.

    • Has expansion slots to add additional control, such as chiller loop monitor and cycles of concentration based on incoming makeup water.

    Model 2175e Spec Sheet

    Model 2175e Manual


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