Siemens SITRANS L Operating Instructions Manual page 176

Diagnosing and troubleshooting
10.3 Operation troubleshooting
Code/ Meaning
Icon
S: 114 Addr Bus
S: 115 Spur SW
S: 116 Spur HW
S: 117 SV High
S: 118 SV Low
10.3 Operation troubleshooting
Operating symptoms, probable causes, and resolutions.
Symptom
Display shows
Display shows
Display shows
Display shows
176
Cause
level or target is out of range
material build-up on antenna
location or aiming:
• poor installation
• flange not level
• Auto False Echo Suppression
may be incorrectly applied
antenna malfunction:
• temperature too high
• physical damage
• excessive foam
• multiple echoes
Corrective Action
Hardware problem. If fault persists contact your local Sie-
mens representative.
Hardware problem. If fault persists contact your local Sie-
mens representative.
Hardware problem. If fault persists contact your local Sie-
mens representative.
Verify TB not in simulation mode. If fault persists contact
your local Siemens representative.
Verify TB not in simulation mode. If fault persists contact
your local Siemens representative.
Action
• check specifications
check Low Calibration Pt. (2.3.7.1.)
•
• increase Confidence (2.5.9.1.)
• clean the antenna
• re-locate SITRANS LR250
• check to ensure nozzle is vertical
• ensure end of antenna protrudes from end of nozzle
• review Auto False Echo Suppression (Page 238)
• ensure Auto False Echo Suppression Range is set correctly
check temperature in Maximum Value (3.3.2.)
•
• use foam deflector or stillpipe
• relocate
• use a defoamer
• set Algorithm (2.5.7.1.) to tF (trueFirst echo)
SITRANS LR250 with FOUNDATION FIELDBUS
Operating Instructions, 09/2021, A5E32221411-AH