Troubleshooting - Siemens SITRANS L Pointek ULS200 Operating Instructions Manual

Probable causes are:
Material or object in contact with sensor face.
The device is not perpendicular to the material
surface.
Change in level too fast.
Material out of range.
Foam on liquid surface.
Too much dust or interference from material
filling.
High level of vibration in the mounting structure.
Material inside blanking zone or below range
limit.
Pointek ULS200
Operating Instructions, 01/2019, A5E32268616-AB
The echo is not reliable and the device is waiting for a valid echo before
updating the measurement.
Remedy
Lower material level or raise the device.
Check the device mounting. If angle of repose is
too steep, angle the device mounting.
Adjust speed of response.
Acceptable on some high level switch applica-
tions.
Mount the device via stilling well or pipe.
Relocate the device.
Relocate the device or limit vibration.
Adjust blanking or range limit
Fail-safe default after prolonged Loss Of Echo.
Investigate the probable causes listed above.
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