SITRANS TF320 Temperature transmitter with single chamber enclosure for wall or pipe mounting, one configurable input and a galvanically isolated 2-wire output. 2-wire, 4 … 20 mA Input 1 RTD Pt100 IEC 60751 3-wire None None CJC Die-cast aluminum enclosure . Flameproof enclosure (Ex d) / Intrinsic safety (Ex i) / Dust ignition protection by enclosure zone 21/22 (Ex t) / Increased safety zone 2 (Ex ec) 2 x M20 x 1.5 / closed Local operation (lid with glass window) ATEX (Europe) & IECEx (World) & UKEX (United Kingdom) Pipe mounting kit for single chamber enclosure, SST316L