The pRed value provides valuable insights into combustion efficiency by assessing the presence of unburnt compounds in the flue gas. It is derived from a secondary electrode with a unique chemical composition, integrated into the same zirconia semiconductor housing as the O2 sensor. This innovative design allows for simultaneous measurement of both O2 levels and pRed values, offering comprehensive combustion analysis from a single sensor.
This additional measurement serves dual purposes: improving qualification process of your equipment by establishing a baseline and providing live monitoring to detect combustion drift.