Bürkert 8619 multiCELL WM AC, Operating Instructions Manual

Page: 154 / 194

When a "warning" or "error" event is generated by the 8619:
→
go into the "Information" menu to read the cause of the event generation
→
and/or read the measured conductivity value.
→
If necessary, clean the cell and/or recalibrate the sensor.
→ If necessary, check the process.
• The "warning" event may also be associated with one and/or other digital outputs. See section 8.10.23.
• A current of 22 mA may be emitted on one and/or other of the current outputs when an "error" event related
to either the monitoring of the fluid pH, redox, conductivity or temperature values or the monitoring of an
analogue input is generated. See section 8.10.22.
• See also section 9.3 If you encounter problems.
STATE : Choose whether or not to activate monitoring of fluid conductivity.
This monitoring is done by the generation of a "warning" event if the fluid conductivity range defined in the "Warn
Hi/Lo" functions below is exceeded and an "error" event if the fluid conductivity range defined in the "Err Hi/Lo"
functions below is exceeded.
CONDUCTIVITY : Read the fluid conductivity measured in real time by the sensor.
WARN. HIGH : Enter the fluid conductivity value above which a "warning" event is generated.
WARN. LOW : Enter the fluid conductivity value below which a "warning" event is generated.
ERR. HIGH : Enter the fluid conductivity value above which an "error" event is generated.
ERR. LOW : Enter the fluid conductivity value below which an "error" event is generated.
8.12.6 Monitoring the temperature of the fluid
This function is used to monitor the fluid conductivity and define the device's behaviour if the ranges defined are
exceeded.
Refer to section 8.9 to access the "Diagnostics" menu.
Diagnostics Temperature Mx:pH/ORP
Temperature
State: ON/OFF
READING
Warning high: ENTERING
Warning low: ENTERING
Error high: ENTERING
Error low: ENTERING
Mx:Conductivity
A malfunction in your process or on the temperature sensor may be revealed by too low or too high a fluid tem-
perature or by an incorrect temperature measurement.
To be warned when the temperature measurement is out of range:
→
activate monitoring on the fluid temperature in the "Status" function, and then
→
set a temperature range (in °C) outside of which the 8619 generates a "warning" event and displays the icons
and ;
→
set a temperature range (in °C) outside of which the 8619 generates an "error" event and displays the icons
and
X
.
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Adjustmentandcommissioning
Type 8619
English