formula for thermocouple

{"cid":"91149195","title":"High temperature tolerance Si3N4 Thermocouple Components Protection Silicon Nitride tube","imgUrl":"https:\/\/img.chinax.com\/nimg\/b3\/ce\/d209c280b3cb0b56366917c595ff-200x200-1.jpg","attrs":{"Price":"1-100","Brand Name":"GME","Model Number":"Diameter 28*16","Minimum Order Quantity":"1","Delivery Time":"5-7days","Certification":"CE, RoHs","Place of Origin":"China","Payment Terms":"L\/C, T\/T, Western Union,Paypal","Supply Ability":"1000\/month","Packaging Details":"carton","Material":"Silicon Nitride","Shape":"Pipe","Color":"Gray\/black","Thickness":"6mm","Density":"3.4g\/cm3","type":"Si3N4","Application":"Industrial Area","Usage":"Protect Thermocouple","Working temperature":"1400C"}}

{"cid":"91223373","title":"Type K Chromel-Alumel Thermocouple Strip with IEC Grade 1 Standard Tolerance and High Toughness Annealed Alloy in 0.20\u00d73.0mm Precision Finished Tape","imgUrl":"https:\/\/img.chinax.com\/nimg\/98\/fc\/8c6f6ca936debb229a05f1dfb0f3-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"Huona","Model Number":"Type K","Minimum Order Quantity":"5KG","Delivery Time":"5-21 days","Measurement Accuracy":"IEC Grade 1 Standard Tolerance","Supply Ability":"500 tons per month","Thermocouple Type":"Type K (Chromel + Alumel) Standard Pair","Certification":"ISO 9001","Payment Terms":"L\/C,T\/T,Western Union","Standard Dimension":"0.20mm (T) \u00d7 3.0mm (W)","Operating Temperature":"-180\u00b0C ~ 1250\u00b0C (Dry Industrial Environment)","Custom Size Range":"Thickness: 0.06\u20130.6mm; Width: 1.5\u201312mm","Alloy Composition":"Positive: Chromel (Ni-Cr); Negative: Alumel (Ni-Si-Mn)","Surface Treatment":"Full Soft Annealed & Precision Finished","Packaging Details":"Carton\/Wooden Case","Processing Performance":"High toughness, bendable, stampable, cuttable without deformation","Place of Origin":"Shanghai"}}

{"cid":"91188450","title":"Electrically Insulating Ceramic Welding Pins With Formula Si3N4","imgUrl":"https:\/\/img.chinax.com\/nimg\/25\/a2\/5931e4abd8d40b8263116215d6c6-200x200-1.jpg","attrs":{"Price":"Negotiation","Brand Name":"BLM-SN-1","Minimum Order Quantity":"Negotiation","Delivery Time":"5-7 days subject to the clients' requirement and quantity","Place of Origin":"Jiangsu, China (Mainland)","Payment Terms":"Western Union, L\/C, T\/T","Supply Ability":"3000 pc\/pcs per Month","Packaging Details":"packed and labeled according to the regulations and customer's requests.Great care is taken to avoid any damage which might otherwise be caused during storage or transportation.","Size":"standard or customization","Type":"Ceramic Plates, Silicon Nitride CeramicProjection Welding Pin","Application":"Structure Ceramic","Delivery":"5-7days subject to the clients' requirements and quantity","Price Term":"Ex-Work,FOB,CNF,CFR,CIF,FCA,DDP,DDU"}}