4 conductivity, Conductivity – Xylem Multi 3420 User Manual
Page 107
 
Multi 3420
What to do if...
107
ba75864e11
02/2011
Error message,
Error
6.4
Conductivity
Error message,
OFL
Error message,
Error
Cause
Remedy
– Sensor contaminated
– Clean the sensor
– Measured temperature outside
the operating conditions 
(OFL/UFL displayed instead of 
temperature value)
– Observe the temperature
range for the measuring 
medium
– Defective sensor
– Replace sensor
Note
More information, as well as notes on cleaning and replacement of 
sensors, are given in the documentation of your sensor.
Cause
Remedy
– Measured value outside the
measuring range
– Use suitable IDS conductiv-
ity sensor
Cause
Remedy
– Sensor contaminated
– Clean sensor and replace it
if necessary
– Calibration solution not suitable
– Check calibration solutions
Note
More information, as well as notes on cleaning and replacement of 
sensors, are given in the documentation of your sensor.