ProMinent DULCOMETER diaLog DACb Assembly And Operating Instructions Manual page 160

[Diagnostics]
Error Error message text
02 The mV input voltage
is too high.
03 The temperature is too
low.
04 The temperature is too
high.
05 A calibration error is
pending.
06 No sensor detected,
please check the con‐
nection.
07 Check the mechanical
state of the sensor.
Glass breakage is pos‐
sible.
08 The checkout time was
transgressed.
160
Cause
pH/ORP sensor is faulty
The connected signal
does not come from a pH
sensor.
A disturbance signal is
picked up.
Incorrect sensor con‐
nected.
No sensor or incorrect
sensor connected.
With amperometric anal‐
ysis (e.g. chlorine): The
calculated reference
value deviates too much
from the real value or the
sensor value.
With pH and ORP: the
buffers used differ from
the nominal value, are
outdated or watered
down.
Measuring cable connec‐
tion disconnected.
No sensor is connected.
Cable faulty or not con‐
nected.
Sensor is suspended in
the air.
Incorrect interpretation of
cable break detection.
Diaphragm glass broken.
Incorrect interpretation of
glass break detection.
[Control] menu, the
In the
set control variable has
exceeded the threshold
for a longer time than the
checkout time control var‐
iable.
Remedy
Replace the sensor.
Check the origin of the sensor signal.
Check the raw signal by pressing
sensor raw value is shown here in mV. If
the value with pH is greater than ± 500 mV,
or with ORP is greater than ± 1500 mV,
then these are wrong sensor values. Check
once again the cabling and origin of the
sensor signal. Ensure that the measuring
lines are not laid parallel to power cables.
Check the type of sensor connected. Only
Pt 100 and Pt 1000 sensors work.
Check the sensor connection
Check the type of sensor connected. Only
Pt 100 and Pt 1000 sensors work.
With amperometric analysis (e.g. chlorine):
Check the correctness of the reference
method, e.g. DPD1.
With pH and ORP: replace the buffer with
new buffer.
Check the correct connection of the meas‐
uring cable connection.
Connect the sensor correctly.
Install the sensor correctly in the bypass fit‐
ting.
Switch off cable break detection, as
described in the operating instructions for
the controller.
Replace sensor.
Check the reason for the broken glass e.g.
solids, too high a flow velocity.
Switch off glass break detection, as
described in the operating instructions for
the controller.
The control section needs a longer time to
regulate itself than the selected checkout
time.
The control section needs a greater control
variable threshold to regulate itself than the
selected one.
The metering chemical is empty or has a
too low/high a concentration.
. The