The control of the water treatment in a cooling tower should be simple. The key parameter to control is the concentration of dissolved solids, which we do through the control of the water conductivity. The Lakewood model 140 is a simple as that. SImplicity drives reliability and ease of operation. Connect a water meter and now you can feed the chemicals based on water flow. Blowdown valve, water meter, flow switch, conductivity sensor, and pumps are sold separately.
"Install a conductivity controller to automatically control blowdown. Work with a water treatment specialist to determine the maximum cycles of concentration the cooling tower system can safely achieve and the resulting conductivity (typically measured as micro Siemens per centimeter, µS/cm). A conductivity controller can continuously measure the conductivity of the cooling tower water and discharge water only when the conductivity set point is exceeded. "
Cooling Tower Water Treatment Controller W/Sensor and Tee only p/n 1239595
easy programming. Steel domed switches improve the tactile sensing and life expectancy of the keypad.
Conductivity range 0-10,000 μS Output Signal One 4 – 20 mA, isolated or
Conductivity sensor 2 electrode non-isolated optionally
Conductivity Resolution ± 10 μS powered
Temperature comp. 500 ohm NTC Output relays 2 selectable use, 1 blowdown
Accuracy & repeatability ± 1.0% Relay ratings 3A each, 10A total
Deadband/Setpoint Adjustable 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 N E M A 4X, ETL
Display 16 X 2 Character
Water meter input Contact head, paddle wheel
or turbine Sensors/Plumbing Cooling Tower
Timer Max. blowdown time exceeded, Max Pressure 140 psi (9.65 bar)@ 100 °F
relay time exceeded Max Temp 140°F (60°C)
Min flow 1 gpm (3.785 Lpm)
1167162 SENSOR BOILER -SR
The 2-ELECTRODE BOILER SENSOR is used for monitoring conductivity
in a boiler blowdown line. The 2-electrode boiler sensor
cannot be used after a sample cooler.
Body 316 SS
Electrodes 416 SS
Max Pressure 600 psi (41.4 bar)
Max Temperature 486°F (252°C)
Cable 20 ft High temp
Process thread 3⁄4 inch MNPT
Conduit connection 3⁄4 inch MNPT
The 1520e Uses the Lakewood Instruments 520 Series Sensors. For pH Part Number 1167302 pH Replacement Sensor Tip Shown