First-class standard platinum-iridium 10-platinum thermocouple for the determination of second-class standard platinum-iridium 10-platinum thermocouple; second-class standard platinum-iridium 10-platinum thermocouple for the determination of industrial thermocouples and precision measurement of 300 ° C - 1300 ° C temperature The temperature within the range.
The second-class standard platinum rhodium 30-platinum rhodium 6 is used for the determination of industrial standard platinum rhodium 30-platinum rhodium 6 thermocouples and for precision measurement.
The second-class standard copper-constantan thermocouple is used for the verification of industrial thermocouples and precision measurement.