Tuning fork level switch；Approval II 1D, 1/2D, 2D Ex t IIIC T* Da, Da/Db, Db IP66；Version / Process temperature Standard / -50...+150°C；Process fitting / Material Thread 1½NPT PN25, ASME B1.20.1 / 316L；Electronics Relay (DPDT) 20 ... 72 V DC/20 ... 253 V AC (3A)；Housing / Protection Aluminium single chamber / IP66/IP67；Cable entry / Cable gland / Plug connection ½NPT / without / without；Additional equipment without