Siemens SIMATIC S5 Manual page 59

Operation
Upon delivery, the bridge circuit is adjusted to 0 C = 0 mV. The resulting calibration error of 50
m of a screened three-conductor cable of 3 x 1,5 mm
3–22
2
cross section is < 1,5 C.
C79000–B8576–C865–01
IP244B