Weidmuller URTAR - Universal glavanically isolated signal con Bedienungsanleitung PDF herunterladen (Seite 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 15

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 0.05 °C)

• An accurate digital multimeter (accurate to 0.05 mV and ±0.1 μA)

Input calibration points

Calibration point

Pt100 Ni120

Display Temperature (°C) Display Temperature (°C)

-200

-200.0 °C

-80n

-80.0 °C

700P

700.0 °C

320n

320.0 °C

-100

-100 °C

-80n

-80.0 °C

200P

200.0 °C

200n

200.0 °C

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Weidmuller URTAR - Universal glavanically isolated signal con Bedienungsanleitung Seite 20