Bürkert 8619 multiCELL WM AC, Operating Instructions Manual

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8.12.3 Detecting an open loop on a voltage input
This function is available for an analogue input configured in "voltage" mode.
Refer to section 8.9 to access the "Diagnostics" menu.
Diagnostics AI1/AI2 Mx:Inputs
Open loop ON/OFF
ON/OFF : Activate or deactivate the open loop detection.
When the function has been activated, an "error" event is generated and the message "Mx:E:AIx open" registered
in the data logger if no source is connected to the voltage input or if the wiring is incorrect.
8.12.4 Monitoring the pH or redox values
This function is used to define the behaviour of the device if problems arise on the pH probe (glass electrode
and/or reference electrode) or the redox probe (reference electrode only).
Refer to section 8.9 to access the "Diagnostics" menu.
Diagnostics Glass electrode Mx:pH/ORP
Impedance:
State: ON/OFF
READING
Warning high: ENTERING
Warning low: ENTERING
Error high: ENTERING
Error low: ENTERING
Dépend. temp. ENTERING
Ref. electrode
Impedance:
State: ON/OFF
READING
Warning high: ENTERING
Warning low: ENTERING
Error high: ENTERING
Error low: ENTERING
A malfunction in your process or on the measurement probe may be revealed by too low or too high value of the
impedance.
To be warned when the impedance measurement is out of range:
→
activate monitoring of fluid impedance in the "Status" function, and then
→
set an impedance range outside of which the 8619 generates a "warning" event and displays the icons
and ;
→
set an impedance range outside of which the 8619 generates an "error" event and displays the icons and
X
.
When a "warning" or "error" event is generated by the 8619:
→
go into the "Information" menu to read the cause of generation of this event;
→
and/or read the measured impedance value;
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Adjustmentandcommissioning
Type 8619
English