Model 2350P pH Cooling Tower Controller Microprocessor-Based From Lakewood Instruments
Model 2350 Microprocessor-Based pH 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.
Features
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Differential pH sensor with diagnostics indicate fouled reference or broken glass.
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Integral flowsight & flowswitch lockout.
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Records both makeup (MTR1) and blowdown (MTR2) water meter total gallons.
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Configure blowdown water meter (MTR2) as second makeup meter.
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Four user-selectable relay options (four additional with NRLY):
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Feed by setpoint, direct or reverse;
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Water meter actuated feed. MTR1, MTR2 or sum;
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Feed by percentage of time;
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Schedule feed timer (-RTC Option);
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General alarm contact.
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Three security levels:
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View only
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Operator
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Technician
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Four different languages.
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English Spanish (standard)
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English French (optional)
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English German (optional)
Benefits
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Multiple control options in a single economical package.
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Very accurate control of chemical feed.
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Very low maintenance.
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Tolerant to power surges and brownouts.
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Power cord, plug outlets and attached plumbing make installation easy. There is plenty of protected room inside the enclosure for electrician wiring.
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Very accurate monitoring of the evaporated water.
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Has expansion slots to add additional control, such as chiller loop monitor.
Specifications
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Inputs
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Power
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80-300 VAC
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Sensor
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pH combination glass electrode
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Temperature comp.
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Automatic
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Flow switch
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Dry contact
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Water Meter Input/div>
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Two contacting head or open collector
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Outputs
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Relays
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Four, 3 Amps @ 120 VAC
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4-20 mA
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Two, isolated w/-35L
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Sensor/Plumbing
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Pressure
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140 psi (9.7 bar) @ 100ºF (38º C)
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Max. Temperature
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140ºF (60ºC)
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Min. Flow
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1 gpm (3.8 Lpm)
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Controller
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pH Range
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0-14 pH
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pH Accuracy
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+/-0.05 pH
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pH Resolution
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0.01 pH
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Deadband
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Adjustable
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Setpoints
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Direct or Reverse (configurable in the field)
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Feed timer
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Adjustable
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Keypad
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Numeric
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Display
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Illuminated 128x64 pixel LCD
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Ambient Temperature
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32-158º F (0-70º C)
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Enclosure
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ABS Plastic
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NEMA 4X Optional
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2350
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LONWORKS Technology-based pH controller with 4 selectable relays for HIGH/LOW setpoints or alarms. Includes plumbing, sensor, flowswitch, power cord and outlets. pH range is 0-14 pH with adjustable deadband.
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CONTROLLER OPTIONS (optional, select no more than three)
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-RTC
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Adds 24-hour clock and calendar to controller (required to configure relays to feed chemicals/biocides based on time of day and for data acquisition if using the -RS2L Option). NOTE: Adding an -RTC card does NOT add relays.
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-35L
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Two 4-20 mA outputs configurable for remote data acquisition of pH.
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-RS2L
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Communications node with shareware software; requires -RTC Option.
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-NIN ;
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Network interface node allows 1 NRLY and/or up to 3 NCON/NCKTs to be added.
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ENCLOSURE OPTIONS (optional)
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-WP
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Weatherproof and watertight. 1/2 inch knockouts. No outlets or power cords.
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LANGUAGE OPTIONS (optional, choose one, English and Spanish Standard)
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-EF
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English and French.
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-EG
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English and German.
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REMOTE NODE OPTIONS (optional; MUST purchase -NIN Option above)
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NRLY
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Four additional relays with enclosure (1 per 2000 Series Controller).
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SOFTWARE AND EXTERNAL MODEMS
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LRWS
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Windows-based software for computer to communicate with 2000 Series Controllers.
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MD4X
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High-Baud modem in NEMA 4X enclosure ready to power.
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MD
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High-Baud modem for use with 2000 Series Controllers.
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Model 2350P Cut Sheet
Model 2350P Spec Sheet
Model 2350P Manual
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