supply of j type thermocouple duplex mineral j type thermocouple duplex mineral, j type thermocouple duplex mineral insulated for working temperature o f 600 deg continuous.hot juction ungrounded.the length of the thermocouple 1000mm with adjustable flange. the inner and outer sheath of the thermocouple shall be ss 30 4. the dimension of the outer sheath id12 +/-1mm,od 21 +/- 1mm. the thermocouple eleme nt size shall be not less than 1mm. the thermocouple shall be suitable to use in oil fire d furnace (hsd).the accuracy of the thermocuople shall be +/- 3 deg c upto 400 deg c,+/ -0.75% above 400 deg c. the thermocouple shall be supplied along with calibration certificate from the laboratory accredited to the national standards and the calibra tion point shall be at 300 deg c, 400 deg c, 500 deg c,600 deg c and 650 deg c.warranty:6 months from the date of installation or 12 months from the date of supply against an y manufacturing defects. [ warranty period: 12 months after the date of delivery ] ] => limited