Supply (Wirth) station dedicated thermocouple heat resistance

Supply (Wirth) station dedicated thermocouple heat resistance
 

Product description:

1, the application
Professional design for the power plant to meet the 300,000, 600,000 kilowatts generating units and auxiliary equipment required temperature. Direct measurement range of -200 ° C ~ 800 ° C of the production process of the liquid, vapor and gases and solid surface temperature.
2, the working principle
Thermocouple The electrode is composed of two different conductor materials. When measuring side and reference junction temperature difference, it will generate thermoelectric power, work thermoelectric power meter will show the corresponding temperature value.
Thermal resistance Is the use of material changes in temperature, its resistance changes with the characteristics to measure the temperature. When the resistance changes, the working resistance of the meter will show the corresponding temperature value.
3, the main technical parameters
Product performance standards
IEC584
IEC751
IEC1515
JB / T18622-1997
JB / T8623-1997
GB / T16839-1997
4, measuring range and tolerance

Model No. indexing tolerance level I II Tolerance Value Tolerance Value Temperature range ° C Temperature range ° C WRN K ± 1.5 ° C -40 ~ + 375 ± 2.5 ° C -40 ~ + 333 ± 0.004ltl 375 ~ 1000 ± 0.0075 ltl 333 ~ 1200 WRM N ± 1.5 ° C -40 ~ + 375 ± 2.5 ° C -40 ~ + 333 ± 0.004 ltl 375 ~ 1000 ± 0.0075 ltl 333 ~ 1200 WRE E ± 1.5 ° C -40 ~ + 375 ± 1.5 ° C -40 ~ + 333 ± 0.004 ltl 375 ~ 800 ± 0.004 ltl 333 ~ 900 WRF J ± 1.5 ° C -40 ~ + 375 ± 1.5 ° C -40 ~ + 333 ± 0.004 ltl 375 ~ 750 ± 0.004 ltl 333 ~ 750 WRC T ± 1.5 ° C -40 ~ + 125 ± 1 ° C -40 ~ + 133 ± 0.004 ltl 125 ~ 350 ± 0.0075 ltl 133 ~ 350

5, temperature insulation resistance
Thermal resistance At an ambient temperature of 15-35 ° C, relative humidity less than 80%, the test voltage is 10-100V (DC) insulation resistance between the electrode and the jacket pipe) 100MΩ.
Thermocouple At an ambient temperature of 20 ± 15 ° C, relative humidity less than 80%, the test voltage is 500 ± 50V (DC) insulation resistance between the electrode and the jacket pipe) 1000Ω.m