Bindicator F78MP Series, Руководство по установке и эксплуатации

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MPR180416 Rev. B
OPERATION TROUBLESHOOTING
Operating symptoms, probable causes, and resolutions.
Display/Symptom Cause Action
S:0 LOE Level or target is out of range • check specifications
• check Low Calibration Point (2.3.5.1.)
S: 0 LOE Material build-up on antenna • use the air purge feature to clean the antenna
• re-locate unit
S: 0 LOE Location or aiming:
• poor installation
• flange not level
• Auto False Echo Suppression may be
incorrectly applied • check to ensure nozzle/standpipe is vertical
• ensure the nozzel is not protruding into
antenna area
• review Auto False Echo Suppression (2.4.8.1.)
• ensure Auto Suppression Range is set
correctly
S: 0 LOE Antenna malfunction:
• temperature too high
• physical damage • check temperature in Maximum Value (3.4.2.)
• relocate unit
Reading does not
change, but the level
does Unit processing wrong echo, i.e. vessel
wall, or structural member • re-locate unit
• check nozzle for internal burrs or welds
• use Auto False Echo Suppression (2.4.8.1.) if
necessary: see Auto False Echo Suppression
(2.4.8.1.)
Measurement is
consistently
off by a constant amount • setting for Low Calibration Point
(2.3.5.1) not correct
• setting for Sensor Offset (2.3.5.3.) not
correct • check distance from sensor reference point to
Low Calibration Point (2.3.5.1.)
• check Sensor Offset (2.3.5.3.)
Screen blank Power error • check nameplate rating against voltage
supply
• check power wiring or source
Reading erratic
Echo confidence weak • refer to Confidence (2.4.7.1.)
• use Auto False Echo Suppression (2.4.8.1.) and
Auto False EchoSuppression Range (2.4.8.2.)
• use foam deflector or stillpipe
Material filling • relocate unit
Reading response
slow Fill Rate/Min (2.3.6.2.) setting is
incorrect • increase measurement response if possible
Reads correctly but
occasionally reads high
when vessel is not full • detecting close range echo
• build up near top of vessel or nozzle
• nozzle problem • use the air purge feature to clean the antenna
• use Auto False Echo Suppression (2.4.8.1.)
and Auto False Echo Suppression Range
(2.4.8.2.)