Weidmuller CNDAR - Universal galvanically isolated signal converter - Handbuch (Seite 17)

1
Normally electrical conductivity is measured at 2 °C. Since the
relationship to temperature is frequently non­linear, 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
T
) to the conductivity at reference temperature (C
2 °C
).
So that
R= C
T
/ C
2 °C
Viewingthecelltemperature
Press the
ì key to display the cell temperature. If the display shows
Ovr , then the RTD is not connected correctly.
Over-rangedisplay
When the input signal is outside the programmed input range the
display will show Ovr for over­range or -Ovr for under­range.
Reviewingthesetup
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.
Clearingtrippedalarms
You can acknowledge a tripped alarm by simply pressing the key for
that channel ï for Alarm 1 or ENT for Alarm 2).
Displayingthealarmsetpoints
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
---- .