How many conductivity cells monitor the coolant through the demineralizer?

The correct answer indicates that two conductivity cells are used to monitor the coolant through the demineralizer. In systems where the quality of coolant is crucial, such as in nuclear reactors or various industrial applications, having dual conductivity cells can enhance the accuracy and reliability of monitoring.

Using two cells allows for redundancy, enabling the system to compare readings. If one cell shows an unusual conductivity level that deviates from the expected values, the second cell can confirm or refute that reading. This dual cell setup helps identify potential issues, such as improper deionization or contamination, leading to more effective system management and maintenance.

In many industrial systems, this approach is standard to ensure that the coolant remains within specified conductivity limits, contributing to optimal operating conditions and equipment longevity. Thus, the reason two conductivity cells are employed is to ensure accurate monitoring and enhance system reliability.