Weidmuller CNDAR - Universal galvanically isolated signal con Manual de usuario descargar pdf (Pagina 17)

Normally electrical conductivity is measured at 25 °C. Since the

relationship to temperature is frequently non-linear, the CND/AR allows

you to enter four additional points for linearisation. The points are

entered as temperature (T) and the ratio (R) of the conductivity at that

temperature (C

) to the conductivity at reference temperature (C

25 °C

So that

R= C

25 °C

Viewing the cell temperature

Press the ì key to display the cell temperature. If the display shows

Ovr , then the RTD is not connected correctly.

Over-range display

When the input signal is outside the programmed input range the

display will show Ovr for over-range or -Ovr for under-range.

Reviewing the setup

For review mode, press the Å and ì keys simultaneously.

Press the Å and ì keys to move through the setup sequence (see

table). Greyed items in the setup table are not shown in review mode.

A 10 s timeout applies for review mode or you can press to quit.

Note: You can use review mode while the instrument is in service and

the analogue output and alarms will continue to operate correctly.

Clearing tripped alarms

You can acknowledge a tripped alarm by simply pressing the key for

that channel ï for Alarm 1 or ENT for Alarm 2).

Displaying the alarm setpoints

To check a setpoint, simply press the key for that channel ï for Alarm

1 or ENT for Alarm 2). If the alarms are disabled the display will show

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Weidmuller CNDAR - Universal galvanically isolated signal con Manual de usuario Pagina 17