Platinum rhodium thermocouple Hot runner type J what's the meaning of release time: 2019 - 03 - 14 reading times: zero

Platinum rhodium thermocouple What is the meaning of hot runner type J? Platinum rhodium thermocouple Hot runner J type refers to the thermocouple used hot runner ( Thermal line) Type, the J type, including a few K type and E type is the commonly used thermocouple, temperature control box can be applied in accordance with what you choose the suitable type. For example, some temperature control box is only applicable to J type thermocouple, and some temperature control box for type J and K type thermocouple. Different types of electric coupling is made of different materials, can refer to the following content: ( J) Iron - Copper nickel ( Constantan) Thermocouple ( T) Copper - Copper nickel ( Constantan) Thermocouple ( E) Nickel chrome - Copper nickel ( Constantan) Thermocouple ( K type) Nickel chrome - Nickel silicon thermocouple ( S) 10 - platinum rhodium thermocouple Platinum thermocouple ( B) 30 - platinum rhodium thermocouple 6 thermal power socket type thermal resistance structure 1. Armored thermal resistance: armored thermal resistance is by thermal components ( The resistor body) , wire, insulation materials, stainless steel casing with a solid body, it's common for from 2 ~ 8 mm outside diameter, minimum of phi mm. Compared with the normal thermal resistance, it has the following advantages: ( 1) Small volume, external no air gap, thermal inertia, small measuring hysteresis; （ 2) Good mechanical function, resistance to vibration, shock; （ 3) Can bend, facilitate device ( 4) Use the long service life. 2. Transverse thermal resistance: transverse thermal resistance temperature sensing element by special disposal of the resistance of the wire winding, close to the face in the thermometer. Compared with ordinary axial heat resistance, it can more correctly and swiftly to reflect the practice of end face being measured temperature, suitable for measuring temperature bearing and other parts of the face. 3. Flameproof thermal resistance: flameproof thermal resistance specially constructed junction box, its shell external explosive mixed gas by by a spark or arc effects such as explosion limits within the junction box, that wouldn't make consumption field explosion. Flameproof thermal resistance can be used in the Bla ~ B3c zone with the explosion risk level place of temperature measurement. 4. Knowledge of thermal resistance: industrial commonly used thermal resistance temperature components ( The resistor body) The structure and characteristics. In temperature measuring principle of thermal resistance, the change in temperature is being measured indirectly measured through the change of the thermal resistance tolerance, therefore, the thermal resistance of lead and other kinds of guide line of resistance change will affect temperature measurement. To eliminate the influence of the lead resistance with a use three wire or four wire system.