Compare Quick view INVENSYS 871PH-1A1A - Pre-owned Part, See Description USD 3,520.42 PH/ORP SENSOR W/CABLE ASSEMBLYU - This is a pre-owned part - All ÔUÕ suffix designated items are repackaged and may have been previously used in the field or used as demo units. Manuals and accessories provided with original units may not be available... USD 3,520.42 Compare Quick view