ProMinent DULCOMETER DMT Series - Troubleshooting; Error Messages During Operation

ProMinent
®
Page 44
9Troubleshooting
9.1 Error messages during operation
The following error messages can appear in the permanent display during
operation:
Message Displayed Cause of fault Remedy
value
Output overflow Measured Warning: detected current value Change configuration if
value greater than pre-set necessary
20 mA value
Output underflow Measured Warning: detected current value Change configuration if
value less than pre-set necessary
4 mA value
pH input error ! -2.00 pH Probe not present or lead Check probe connection
or damaged (switch off probe check if
16.00 pH necessary)
pH input error ! ~7.00 pH Short circuit Check probe connection
(probe resistance ≅ 0 Ω)
defective pH probe !! Measured Measured probe Replace probe (switch off
value resistance < 2 MΩ probe check if necessary)
ORP input error ! Measured value > 1200 mV or Check probe connection
< -1200 mV,
resp. fluctuating significantly
temp. input error ! 999.9 ° Probe not present or Check probe connection
lead damaged (set temperature measurement
to manual if necessary)
temp. input error ! -99.9 ° Short circuit Check probe connection
(set temperature measurement
to manual if necessary)
The error message disappears automatically once you have remedied the
fault.
Troubleshooting
BA_DM_163_03_08_GB.p65 26.03.2008, 10:20 Uhr44