Actuasys offecs thermocouple/rtd heads flameproof/weatherproof of various designs. These are fabricated from aluminium alloy lm-6, cast iron and stainless steel 304/316 materials it is suitable for explosive atmosphere of group i,ooa,iib and iic as per is: 2148, having protection grade ip-65/66 as per is: 2147 [is:13947]. The tc/rtd heads are tested by cmri, approved by cce and dgfasli and have bis marking.