... consult the above RTD tolerances scope. thermal response timeDiameter of protective(mm)Material of protectiveThermal response time(s)Platinum resistance¢12Carbon ... :H62 Carbon steel:20 Stainless steel:1Cr18Ni9Ti‹180 Diameter of protective tube(mm)Length L¢12225,250,350,400,450,550,650 ... ,1150¢16300,350,450,500,650,900,1150,1650,2150Taper protective tube225,250,300,400