Orion Oxygen Scavenger Monitor

The Orion 1818 Oxygen Scavenger Monitor is one of a series of 
microprocessor-based analyzers designed to measure continuously trace 
levels of certain oxygen scavengers in relatively pure water. The Orion 
1818 Monitor continuously measures these oxygen scavengers at points 
in the steam/water circuit where dissolved oxygen control is critical.  

Common measuring points are in feedwater, boiler water, or economizer
inlet, depending on the system design and where the oxygen scavenger
is added. In high and low pressure boiler systems, oxygen scavengers 
are added to react with dissolved oxygen present, many leaving behind 
a small residual. This residual ensures that any small amount of 
dissolved oxygen that enters the systems through leakage will be 
removed.