Industrial RTDs produce greater accuracy and are broken down into two market segments: industrial and sanitary. Aluminum heads are used in industrial applications, chemical processes, production lines, ovens, furnaces, and vessels. Poly heads are used in sanitary applications within the food, drug and pharmaceutical markets. The probes conductor is made of 24 gauge cooper wire and is encased with FEP insulation, and has a 316 stainless steel sheath. Featuring a standard size protection head with a gasketed cap to seal out dust and moisture and houses a ceramic terminal block. Head has a 3/4" NPT(F) opening on the side for easy connection to electrical conduit.

Spring loaded probes: designed to bottom out when inserted in to a thermowell to produce an accurate reading. (Not designed for direct insertion in to medium)
Non-spring loaded probes: designed to be directly inserted into the medium being measured without the use of a thermowell.