Type Two wire (RTD2) Three wire (RTD3) Four wire (RTD4) Six wire (RTD6) Conductor Type CU- CopperNi Nickel CU-NI Copper-Nickel Sheath OD 018 (1/8″) 003 (3 mm) 316 (3/16″) 005 (5 mm) 014 (1/4″) 006 (6mm) 516 (5/16″) 308 (3/8″) 009 (9mm) 012 (1/2″) Sheath Material SS316L (Stainless Steel 316L) SS321 (Stainless Steal 321) SS304L (Stainless Steal 304L) Special Options
