SITRANS LUT400
270 Operating Instructions, 07/2019, A5E33329501-AC
0
0
* Loss of echo (LOE).
The device was unable to get a
measurement within the Fail-safe
LOE Timer period. Possible
causes: faulty installation, foam-
ing/other adverse process condi-
tions, invalid calibration range.
• Ensure installation details are
correct.
• Adjust process conditions to
minimize adverse conditions.
• Correct range calibration.
• If fault persists, contact your
local Siemens representative.
1
1
* Cable fault.
Broken cable.
Inspect attached cabling and any
termination points to ensure no
disconnection or damage; re-
pair/replace if necessary. If no
issue with cabling, contact your
local Siemens representative.
3
3
Device is nearing its lifetime limit
according to the value set in
Maintenance Required Limit.
Replacement is recommended.
4
4
Device is nearing its lifetime limit
according to the value set in
Maintenance Demanded Limit.
Replacement is recommended.
5
Saving Parameters.
(LUI fault only.) Saving is in pro-
gress. Do not turn off the device.
Wait for completion.
6
6
Sensor is nearing its lifetime limit
according to the value set in
Maintenance Required Limit.
Replacement is recommended.
7
7
Sensor is nearing its lifetime limit
according to the value set in
Maintenance Demanded Limit.
Replacement is recommended.
8
8
Service interval as defined in
Maintenance Required Limit has
expired.
Perform service.
9
9
Service interval as defined in
Maintenance Demanded Limit
has expired.
Perform service.