20. Trouble-Shooting
105
Dr. A. Kuntze
I
Gutes Wasser mit System
Robert-Bosch-Str. 7a
40668 Meerbusch
+49 (0) 2150-7066-0 / Fax -60
www.kuntze.com
Event message
Cause
Suggested remedies
Check temperature
input
The temperature input
receives no proper signal
Check Pt100/Pt1000
Check cable
Without sensor use manual
compensation
If the temperature input does not receive an appropriate signal, you may have selected automatic
temperature compensation although no temperature sensor is connected. In that case switch to manual
compensation. It is also possible that a Pt100 was connected but the compensation was set to Pt1000,
or vice versa.
If you have connected a Pt100 or Pt1000, check if you have used the right terminals for connection and
the right settings in the temperature menu.
As with the measuring input, a defective cable or sensor can be the cause for this message. You can
check temperature sensors with an Ohmmeter – a Pt100 has a resistance of approx. 109 Ohm at room
temperature, a Pt1000 approx 1080 Ohm.
With inductive measurements, an NTC is used. At ambient temperature, it should be at approx.
214kOhm.
Event message
Cause
Suggested remedies
Out of measuring
range
Measured values exceed
the measuring range
Trend indication only
If the measured value lies outside the measuring range but can still be processed by the instrument, it
will be displayed together with this message. Please note that all information on accuracy, linearity,
influences of temperature etc specified in the data sheets, only apply to values within the measuring
range. Outside this range, the deviations and cross-influences might be higher, and the measurement
can only be used as an indication.
If your instrument allows to select from a variety of measuring ranges, select the next higher range.
If the instrument displays 32767 the measuring input receives signals it cannot process. Such display
has the same meaning as the error message “Check measuring input” and should be treated as such.
If the measured value gets so high that it can no longer be processed, the message „check measuring
input” will appear.
Event message
Cause
Suggested remedies
Upper limit
(or lower limit,
respectively)
The measured value is higher
than the upper limit (or lower
than the lower limit, respectively)
Check dosage
check controller parameters
keep in mind delay settings
