Troubleshooting; Error Messages During Operation - ProMinent DULCOMETER DMT Series Operating Instructions Manual

Troubleshooting

9
9.1
The following error messages can appear in the permanent display during
operation:
Message
Output overflow
Output underflow
pH input error !
pH input error !
defective pH probe !!
ORP input error !
temp. input error !
temp. input error !
The error message disappears automatically once you have remedied the
fault.
Page 44
Troubleshooting

Error messages during operation

Displayed Cause of fault
value
Measured Warning: detected current value
value greater than pre-set
20 mA value
Measured Warning: detected current value
value less than pre-set
4 mA value
-2.00 pH Probe not present or lead
or damaged
16.00 pH
~7.00 pH Short circuit
(probe resistance ≅ 0 Ω)
Measured Measured probe
value resistance < 2 MΩ
Measured value > 1200 mV or
< -1200 mV,
resp. fluctuating significantly
999.9 ° Probe not present or
lead damaged
-99.9 ° Short circuit
Remedy
Change configuration if
necessary
Change configuration if
necessary
Check probe connection
(switch off probe check if
necessary)
Check probe connection
Replace probe (switch off
probe check if necessary)
Check probe connection
Check probe connection
(set temperature measurement
to manual if necessary)
Check probe connection
(set temperature measurement
to manual if necessary)
ProMinent ®