Cooling Tower Conductivity – how basic is that? In order for you as the water treater to focus on your water treatment challenges, though, you need the conductivity sensor to work right, every time.
Lakewood Instruments has been manufacturing reliable, cost-effective cooling tower conductivity sensors for over 50 years. Coupled with our tees that fit like a glove, you can maintain these sensors in a flash, and get on to more important things.
Optimize your cooling tower water conductivity and place your order today or contact us for help on getting exactly what you need.
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Conductivity Sensors for Cooling Towers
Our standard 2-electrode sensors have an embedded temperature compensator – so you don’t have to worry about that. The tips are carbon, and they are easy to clean and calibrate. The standard range of operation is 50-10,000 micro siemens. The great news is that our Model 3175 water treatment controller for cooling towers and boilers are 100% compatible with our sensors – you don’t need to purchase additional equipment!
2 Electrode Conductivity Sensors

This sensor is used on the following models: 101-161RS, 101-161RSFS, 140, 1512e, 1575, 1575e.
This sensor is used on the following models: 101, 111, 151, 161, 173, 175, 211, 215, 222C, 412, 420, and 140 and 1575e on a mounting plate.

If you are in a high-fouling environment and using a NexSys controller, we can hook you up with 4 electrode sensors too, which work well from 500 – 10,000 micro siemens.
4 Electrode Conductivity Sensors
Part No. 1169202 – 4 electrodes and 20 feet of cable
For use with the following models: 2175e, 2412e, 2430e, 2175-N4, 2412-N4, 2430-N4, 2812e, 2830e, 2832e, 2875e, and NexSys®.
Also Available With A 4 Foot Body For Submersion Applications. Part No. 1169201.
Part No. 1167286 – 4 electrodes and 2.5 feet of cable (mounting plate)
For use with the following models: 224C, 1400, 2175, 2412, 2430, NCKT, and NexSys® on a mounting plate.
Need a 2-foot or 4-foot body for a submerged application? No problem, we have that too.
2 Electrode Conductivity Sensors With 2 Feet or 4′ Body
2 electrodes with either a 2-foot or 4-foot body and 20 feet of cable for submersion applications. These sensors are used on the following models: 101-161RS, 101-161RSFS, 140, 1512e, 1575, and 1575e.
Part No. 1169207: (4′ Body)
Part No. 1269377: (2′ Body)