Weidmuller URTAR - Universal glavanically isolated signal converter - Handbuch (Seite 20)

20
•Setup
For setup mode, connect the security link and press the Å and ì
keys simultaneously. The software version will be displayed (flashing). If
you wish to continue, press within 10 s.
Note: If you remove the security link at any time during the setup
sequence, any changes you have made will be discarded and the
instrument will reset.
•Calibration
General
The URT/AR is factory calibrated and you can select any input range
or output format without recalibrating the unit. However, if you change
the RTD type, you must calibrate the inputs. Allow the instrument 1
minutes of powered operation (to reach a stable temperature) before
calibration.
During calibration allow a few seconds for signals to stabilise before
accepting the value.
Equipment requirements
• A suitable RTD simulator (accurate to 0.0 °C)
• An accurate digital multimeter (accurate to 0.0 mV and ±0.1 μA)
Inputcalibrationpoints
Calibrationpoint
Pt100 Ni120
Display Temperature(°C) Display Temperature(°C)
1 -200 -200.0 °C -80n -80.0 °C
2 700P 700.0 °C 320n 320.0 °C
3 -100 -100 °C -80n -80.0 °C
4 200P 200.0 °C 200n 200.0 °C