When should conductivity readings be taken for accurate measurements?

Taking conductivity readings before blowing down is essential for obtaining accurate measurements because this timing ensures that the water sample reflects the true concentration of dissolved solids present in the boiler or system. Conductivity is affected by the ions present in the water, and blowing down removes some of the water and concentrated impurities, which can lead to a misleading lower conductivity reading if taken after the blowdown.

By measuring conductivity before the blowdown, operators can assess the water quality accurately and make informed decisions about the need for blowdown, chemical treatment, or potential maintenance. This preventive measure is key for effective boiler operation and can help in maintaining optimal performance, reducing scale formation, and avoiding operational issues.