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

7. Limiting deviations

The limiting deviations of the resistances are divided into two classes in the DIN EN 60751:

	Class A	Class B
Max. deviation at 0°C (+/-)	0,15°C	0,3°C
Max. deviation at 200°C (+/-)	0,55°C	1,3°C
Max. deviation at 400°C (+/-)	0,95°C	2,3°C
Max. deviation at 600°C (+/-)	1,35°C	3,3°C

Tab.: Permissible limiting deviation of platinum sensor resistances according to DIN EN 60751

Ill.: The max. permissible limiting

Deviations which are core fixed in the DIN EN 60751 must be kept core fixed over the entire temperature range in the standard. With limiting deviations core fixed between the manufacturer and operators e.g. 1/3 DIN, (thus resistances with maximum a third of the limiting deviation permissible according to DIN) the temperature range of the application site is to be indicated when ordering.

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Next to "8. Response sensitivity"

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