Type K thermocouple
General Description
As sensor for temperature measuring and regulation, industrial-purpose thermocouple is usually connected with display meter and other meters to directly measure temperature of liquid, vapor, gas and solid surface ranging from -40℃ to 1600℃.
Operation Theory of Thermocouple
Thermocouple is based on physical phenomenon that two conductor of different materials is connected to form return circuit, when temperature on both contact is different, it results in thermoelectric potential in return circuit.
Main Technical Parameters
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 |
Notes: t is the actual temperature. It may be indicated with temperature centigrade or percentage of centigrade, the bigger one is preferred.
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