KROHNE SMARTSENS PH 2390 EN - Manual (Page 23)

OPERATION
4
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SMARTSENS PH 2390
www.krohne.com 11/2013 - 4002546302 - MA SMARTSENS PH 2390 R02 en
4.3 Status messages and diagnostic information
Measurements out of specification
Failure
Maintenance
Message Message Message Message Description Description Description Description Action Action Action Action
S01 pH value > pH max
pH value out of range Consider the measuring range limits, otherwise
select a suitable sensor for the process conditions of
the application.
S02 pH value < pH min
pH value out of range
S03 Temp. value > Temp max
Temperature value out of range
S04 Temp. value < Temp min
Temperature value out of range
Message Message Message Message Description Description Description Description Action Action Action Action
F01 Glass resistance > max. MOhm Replace the sensor
F02 Glass resistance < min. MOhm
Message Message Message Message Description Description Description Description Action Action Action Action
M01 Slope < -65 mV/pH Recalibrate the sensor. For more information refer
to
Calibration with PACTwareTM on page 17
M02 Slope > -50 mV/pH
M03 Zero point < -99 mV
M04 Zero point > +99 mV
M05 Maintenance interval expired
.book Page 23 Monday, November 18, 2013 2:13 PM