Technical Specification Nominal Size 2½", 3", 4", 5"and 6" Accuracy Class Class 1.0 Ingress Protection IP 65 Connection Size Fixed connection or Sliding connection Size G1/4", G1/2" or NPT Temperature Scale Range -40°..+600ºC(-40°..+1100ºF) | Sensing Element Coiled bimetal sensing Filling Dry,but fillable Silicone oil Operating Temperature Ambient temperature -50°..+120ºC Bezel Ring Type Bayonet case sealed External calibration device on back case Dial Graduation Standard in dual ranges ºF and ºC | Design Material Casing and Bezel Ring Stainless steel 304 Probe/ Bulb Sensor Stainless steel 316 Connection Stainless steel 304, sliding connection or * Fixed welded connection Window Plain instrument glass Pointer Black painted aluminum Dial Plate Aluminum alloy, bowl cuppied type |