Location -> Products -> Temperature -> Thermocouple and Thermal Resistance -> Thermocouple(Thermal Resistance) For Power Station
Type：thermocouple (thermal resistance) for power station
Illustrate：It is specially designed for power station to measure temperature for 30KW, 60KW power-generating set and concerned equipments. It is used to directly measure the temperature of liquid, vapor, gas, and solid surface ranging from-200℃ to 800℃ during production process.
Thermocouple (Thermal Resistance) for Power Station
It is specially designed for power station to measure temperature for 30KW, 60KW power-generating set and concerned equipments. It is used to directly measure the temperature of liquid, vapor, gas, and solid surface ranging from-200℃ to 800℃ during production process.
Operation Theory
Thermocouple electrodes are made of two different materials. Temperature difference between measuring end and reference end results in pyroelectric potential, then display meter indicates the corresponding temperature to the pyroelectic potential.
It is based on that temperature change of material results in change of its resistance. When resistance value changes, the working instrument will display relevant temperature value.
Main Technical Parameters
Executive Standard
IEC584
GB/T16839-1997
JB/T8622-1997
JB/T8623-1997
Measuring Range & Tolerance
Thermocouple
| Type | Graduation | Tolerance Class | |||
| I | II | ||||
| Tolerance Value | Measuring Range °C | Tolerance Value | Measuring Range °C | ||
| WRN | K | ±1.5°C | -40～+375 | ±2.5 °C | -40～+333 |
| ±0.004ltl | 375～1000 | ±0.0075 ltl | 333~1200 | ||
| WRE | E | ±1.5°C | -40～+375 | ±2.5°C | -40～+333 |
| ±0.004 ltl | 375～1000 | ±0.0075 ltl | 333～900 | ||
Thermal Resistance
| Type | Graduation | Measuring Range ℃ | Accuracy | Tolerance |
| WZP | Pt100 | -200~+500 |
A B |
±(0.15+0.002) ltl ±(0.30+0.005) ltl |
| WZC |
Cu50 Cu100 |
-50~+100 | --- | ±(0.30+0.005) ltl |
Insulation Resistance at Normal Temperature
The insulation resistance between electrode and protection tube of thermocouple shall be no less than 1000Ω.m under condition that environment temperature is 20±15℃,relative humidity is no more than 80%, and testing voltage is D.C.500±50V.
The insulation resistance between electrode and protection tube of thermal resistance shall be no less than 100M Ωunder condition that environment temperature is 15～35℃,relative humidity is no more than 80%, and testing voltage is D.C.10～100V.
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