The problem with measuring Resistance

Respected,

We have a DT85 g series 2 on which all 23 temperature measurements have started to show a bag value compared to what it should be. An example is the air temperature is 9 degrees C outside and the logger shows 17 and all the others have been moved higher.

MU X Huggenberger 48 is connected to DT 85

example

1DBO(W)=1-1 1R(II,,MD100,ES10,GL300MV,S1,W,"Tb-2 ~0C",=115cv)

S1=0,30,27,5,31"C"

3W are probes PT30 , the resistance measurement at the sensor itself is 29.15 and 0.67 ohms, but at the MUx input it is 34.49 and 7.61 ohms due to the distance of the probe from the measurement location. Instead of around 14 degrees, it shows 20 or more degrees. and that for all 23 probes. What could be the problem.

thank you

Sorry for my English, I hope you understand the question.

The problem with measuring Resistance
Respected,
We have a DT85 g series 2 on which all 23 temperature measurements have started to show a bag value compared to what it should be. An example is the air temperature is 9 degrees C outside and the logger shows 17 and all the others have been moved higher.
MU X Huggenberger 48 is connected to DT 85
example
1DBO(W)=1-1 1R(II,,MD100,ES10,GL300MV,S1,W,"Tb-2 ~0C",=115cv)
S1=0,30,27,5,31"C"
3W are probes PT30 , the resistance measurement at the sensor itself is 29.15 and 0.67 ohms, but at the MUx input it is 34.49 and 7.61 ohms due to the distance of the probe from the measurement location. Instead of around 14 degrees, it shows 20 or more degrees. and that for all 23 probes. What could be the problem.
thank you
Sorry for my English, I hope you understand the question.