Error Messages And Warning Alerts; Error Messages - ProMinent DULCOMETER diaLog DACb Assembly And Operating Instruction

18.4

Error messages and warning alerts

18.4.1

Error messages

Tab. 23: Error messages
Error Error message text
01 The mV input
voltage is too low.
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.
Cause
Coaxial cable connec‐
tion disconnected.
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
analysis (e.g. chlorine):
The calculated refer‐
ence 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outdated or watered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.
Remedy
Check that the coaxial cable connec‐
tion is fitted correctly and re-connect.
Check the coaxial cable connection for
corrosion and moisture and replace
with a new cable, if necessary.
Replace the sensor.
Check the origin of the sensor signal.
Check the raw signal by pressing
The sensor raw value is shown here in
mV. If the value with pH is greater than
± 500 mV, or with ORP is greater ±
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.
[Diagnostics]
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