The Thermometer is used to detect the temperature of gas,liquid,steam. It is widely applied to Chemical Industry, Power Plant,Petroleum Industry,Metallurgy industry,Ligth Industry,etc. It normally works together with temperature instruments,display meters and computers to detect and control the temperature.The same as Thermocouple,but the temperature range is from -200 to 800 (oC) Application Scope:  To detect the temp of inflammable gas,liquid, Mine Well,etc. Spec.1)       Temperature Range:       -200-500(oC)2)       Sensor Type:                 Pt1003)       Explosive Proof Grade:   d II BT4 or d II CT44)       Thermowell Material:       3165)       Insert Length:                150,200,350,500(mm)6)       Accuracy:                     B7)       Mounting Type:             Fixing Thread Type,Flange Type Quote RequirementsPlease inform the following things when you inquire.1) Full Series No. ,if you have2) Application Scope (Petroleum Industry, Chemical Industry,Power Station,etc)3) Required Temperature Range4) Sensor Material or Type (PtRh30 PtRh6, K,N,P,C ,etc)5) Fixing or Installation Type ( Movable Flange Type, Non Fixing Type ThreadType)6) Thermowell Material and Diameter if needed (1Cr18Ni9Ti, 16, 20)7) Insert Length8) Accuracy Class (Thermocouple:, Resistance Thermometer:A,B)9) Other Special RequirementsThe more detailed information you provided, the more exact we can quote.