User guide

OPERATION 4
23
SMARTSENS PH 8570
www.krohne.com11/2013 - 4002544902 - MA SMARTSENS PH 8570 R02 en
4.3 Status messages and diagnostic information
Measurements out of specification
Failure
Maintenance
Message
MessageMessage
Message Description
DescriptionDescription
Description Action
ActionAction
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
MessageMessage
Message Description
DescriptionDescription
Description Action
ActionAction
Action
F01 Glass resistance > max. MOhm Replace the sensor
F02 Glass resistance < min. MOhm
Message
MessageMessage
Message Description
DescriptionDescription
Description Action
ActionAction
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 4:44 PM