Robot-
I love how you said "to loosen a gently adherant iron oxide layer during a flush with water."
Gently adherant...Inside the steam header of a Nuclear power plant! That makes me laugh!
You can find both float sensors and ultrasonic level sensors at automationdepot.com. There are several others as well. Do not buy any metallic sensor that will contact the salt solution. Salts Etch Metals! 2% = 20,000 PPM
What size filter are you using in um?
A Delta P of 25 is too much IMO. Use 10 psi.
What is more important the pump or the filter?
You need a new filter
oil enters at 20C and reaches over 120C. Steam is at 140C.
water boils at 100C and all oil has some water in it! If the wt % leaking is < or = to 1% of oil flow than this is your problem.
check % of H2O in oil before and after HE series.
Many ways to skin this cat...
Like,
don't take the...
Using HCl is not a good idea!
A deposit analysis needs to be done. Once the chemical make-up of the scale determined you can decide what chemical to use in removing scale!
The 2 most common chemicals used to remove scale are citric and sulfamic acid!
I have used both many times. The best...