high temperature measure for oven J type thermcouple Probe Size:4*10*1000mm, they also can be made according to your design.
Type：J
Operation Theory of Thermocouple
The working principle of the thermocouple is based on the physical phenomenon that two conductors with different components are connected into a loop. If the temperature of the two terminals is different, heat flow will be generated in the circuit.
Type | Graduation | Tolerance Class |
Ⅰ | Ⅱ |
Tolerance Value | ℃ Measuring Range | Tolerance Value | ℃ Measuring Range |
WRN | K | ±1.5℃ | -40～+375 | ±2.5℃ | -40～+333 |
±0.004|t| | 375～1000 | ±0.0075|t| | 333～1200 |
WRE | E | ±1.5℃ | -40～+375 | ±2.5℃ | -40～+333 |
±0.004|t| | 375～800 | ±0.0075|t| | 333～900 |
WRP | S | ±1℃ | 0～+1100 | ±1.5℃ | 0～600 |
±[1+0.003 (t-1100)] | 1100～1600 | ±0.0025|t| | 600～1600 |
WRR | B | ― | ― | ― | ― |
― | ― | ±0.0025|t| | 600～1700 |
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Notes: t is the actual temperature. It may be indicated with temperature centigrade or percentage of centigrade, the bigger one is preferred.
Thermal Response Time
When step change of temperature happens, τ0.5 is used to indicate the time for current output signal of instrument changes into 50% of the step change value.
Wire Selection
The compensation wire shall match with the graduation of thermocouple. Compensation wires of different cross-section area or types shall be selected depending on distance, ambient temperature, and demands on protection.
Generally, copper conductor shall be adopted for connection wire of thermal resistance. Cross-section area of the wire to be selected depends on distance, and insulation materials and different protections of the wire to be selected depend on environment conditions.
If there's any thermocouple inquiry, welcome contact with us and we are professional with better services and high quality thermocouple.
Sinton Group mainly make kinds of electric heating elements and temperature sensor: For example , cartridge heater,hot runner coil heating element, tubular heater element, ceramic emitter, ceramic plate heating element, aluminium casting heater, mica band heater, ceramic band heating elements, Flexible ceramic heating pad, kapton heater, PI film heating elements, resistance wire, thermocouple, Pt100 etc. Also we make industrial heaters for example air duct heater, pipeline heater, oil circulation heater, drying oven etc. All of our heaters and temperature sensor can be OEM and now we have acquired CE certificate for our heating elements.
