IC Controls

Ppb Dissolved Oxygen

For trace level of dissolved oxygen, parts per billion (ppb) or micrograms per liter (µg/L) is the unit typically used. Similar to parts per million measurement, it reports the amount of oxygen gas dissolved in water. Applications for online dissolved oxygen measurement at ppb levels though typically utilize different technology than that of ppm levels, such as galvanic sensors, in order to achieve the required accuracy.

One of the primary applications for online monitoring of parts per billion level Dissolved Oxygen measurement is in boiler water for corrosion control. Left unchecked, dissolved oxygen can cause pitting and has the potential to cause damage to various components of boiler systems such as condensate lines and economizers.