Technical Information

Resistance Thermometers

1. Construction 2. Wound sensor resistances on glass bodies 3. Wound sensor resistances in ceramic bodies 4. Sensor resistances on ceramic carrier 5. Basic values for standardised resistances according to DIN EN 60751 6. Nominal values 7. Limiting deviations 8. Response sensitivity 9. Leakage resistance 10. Self heating error 11. Parasitic electromagnetic forces (EMK) 12. Marking of resistance thermometer measurement inserts 13. Connection types of sensor resistances

Compensation and thermoelectric cables

11. Parasitic electromagnetic forces (EMK)

During the production of sensor resistances different materials are interconnected:

Platinum,
Platinum-corings,
Gold,
Gold-corings,
solder metals etc.

All combinations of these metals represent practically a thermocouple, which brings a thermo voltage into the measuring circle which can distort the measurement result. The same problem is to be taken into account not only with the sensor resistances but also with the measurement inserts.

Back to "10. Self heating error"

Next to "12. Marking of resistance thermometer measurement inserts"

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