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Reference Manual
00809-0100-4727, Rev EA
October 2010
A-3
Rosemount 8700 Series
Table A-3. Electrode Selection
Electrode Material
General Characteristics
316L Stainless Steel
• Good corrosion resistance
• Good abrasion resistance
• Not recommended for sulfuric or
hydrochloric acids
Nickel Alloy 276
(UNS N10276)
• Better corrosion resistance
• High strength
• Good in slurry applications
• Effective in oxidizing fluids
Tantalum
• Excellent corrosion resistance
• Not recommended for hydroflouric
acid, fluorosilic acid, or sodium
hydroxide
80% Platinum
20% Iridium
• Best chemical resistance
• Expensive material
• not recommended for aquaregia
Titanium
• Better chemical resistance
• Better abrasion resistance
• Good for sea water applications
• Not recommended for hydrofluoric or
sulfuric acid
Electrode Type
General Characteristics
Standard
Measurement
• Lowest cost
• Good for most applications
Standard
Measu
Grounding (Also see
Table A-16 and
Table A-5 for
grounding options
and installation
• Low cost grounding option especially
for large line sizes
• Minimum conductivity of 100
microsiemens/cm
• Not recommended for electrolysis or
galvanic corrosion applications
Bulletnose
• Slightly more expensive
• Best option for coating processes
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