Power - Cooling tower
The condition of the cooling tower is crucial in order to keep industrial plants running optimally for as long as possible between shutdowns. The duration of the shutdown must also be limited as much as possible. This is reason enough to permanently monitor the quality of the cooling water by measuring the pH, conductivity and ORP or redox potential (which controls microbiological growth).
pH measurement
The acidity of pure water is a basic parameter for its quality. Due to the extremely low conductivity, a pH measurement is not clear. It is therefore important to choose an electrode with suitable specifications for this type of water. An intelligent and therefore digital sensor helps to increase the quality and reliability.
pH calculation
The pH value of pure water in the steam cycle can be calculated under certain conditions by combining two conductivity measurements: one before and one after the ion exchanger. Combined with a classical conductivity, this gives an increased certainty and one measurement monitors the other.
ORP (redox) measurement
The measurement of the redox potential (ORP) is often mentioned in the same breath as pH measurement. A potential difference is measured against a reference electrode in both measurements and the same measuring converter is used. Today, you can measure pH, ORP and temperature with the same sensor. The ORP measurement is used to control the dosage of anti-microbial products.
Conductivity
Measuring the (specific) conductivity is the simplest and most commonly used inline measurement for checking the quality of pure water. Intelligent sensors use digital signal transmission, which makes them much more accurate than their traditional analogue predecessors.
Oxygen measurement
Air, and therefore oxygen, can cause corrosion in a water system. There is a real risk of air infiltration due to the numerous couplings and connections. A dissolved oxygen (DO) measurement easily detects any leak. Choose an optical oxygen sensor for better response time, higher reliability and lower maintenance.
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