7
Troubleshooting
7.1
Measuring value missing or incorrect
▪
Possible cause
Solution
▪
No voltage at sensor
Check/establish electrical connection
according to (chapter 4.3)
▪
Lens is covered
Clean the lens (chapter 6.3)
▪
Incorrect calibration
Set the sensor to zero using clear
distilled water or calibrate it for the
medium (chapter 5.2)
7.2
Highly fluctuating measuring value
▪
Possible cause
Solution
▪
Air bubbles in the system
Apply damping to the display and
output current (chapter 5.3)
▪
Sensor not fully immersed into the
process medium
Adjust installation position
7.3
Output current does not match measuring value
▪
Possible cause
Solution
▪
Incorrect calibration at current
output
Check the parameterization of the
current output and adjust as
necessary. (chapter 5.3)
▪
Incorrect electrical connection
Check/establish electrical connection
according to (chapter 4.3)
Summary of Contents for STS-15
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