Commissioning
28 © SICK AG • Subject to change without notice • 8014865/ZUJ3/2018-11-29
7.4 Temperature compensation
The UM18-2 Pro sensors feature internal temperature compensation. Due
to the sensor heating up, the temperature compensation function will reach
its optimal working point after approximately one minute.
Temperature compensation is calibrated for standard mounting condi-
tions, using an aluminum mounting bracket and mounting screws, at the
factory. It is automatically and optimally calibrated to the individual instal-
lation situation when the sensor is cold and the switching output has been
deactivated for approx. 30 min., or the analog output has been outputting
a constant value of between 11 and 13 mA or 4.4. and 5.6 V for approx.
30 min. If the measured value changes over the course of these 30 min.,
the calibration process running in the background is aborted. The standard
parameters or the parameters last calibrated are retained. This function is
very helpful when the installation situation diers greatly from the standard
mounting conditions (e.g. in the case of thermally insulated mounting) and
a very high level of accuracy is required.
Temperature compensation can be switched o via
“Connect+ Adapter,” not temperature-compensated: 0.17 %/K
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