Expect 3 to 5 times longer pH sensor life even if the line fills with 100% hydrocarbon. At 100% hydrocarbon there is no pH reading, but as the % of hydrocarbon falls, the 613 recovers and reads pH!
- Sour water strippers
- All sour waters with H2S (hydrogen sulfide)
- Overhead condensates with oil or light hydrocarbons and/or ammonia
- Boiler feed waters
- Oily waste waters
- API separator waters
- Stack gas scrubber waters
- Sulfur recovery waters
Traditional refinery pH has suffered from highly inaccurate readings due to oil coating, junction plugging, and process contamination of the reference.
The model 613 advanced solid-state construction, by eliminating the porous junction in favour of an impermeable electrochemically active junction, not only stops oil clogging, but is also extremely resistant to all contamination as there is no route for process chemicals to contaminate the internal reference half cell.
Sulphides can not penetrate through the porous junction and cause silver precipitation in the junction and in the internal silver chloride half cell. Ammonia and cyanide can not contaminate the reference cell and form a complex with the fill solution, producing pH offsets.
The result is that the model 613 gives accurate, reliable, low-maintenance pH readings.