Greyline Instruments SLT32 - Field Troubleshooting Guide; Display and Echo Loss Symptoms; Unit Target Pickup Issues; Unit Interference and Electrical Issues

FIELDTROUBLESHOOTING
SYMPTOMS
CHECK
Display -fullscale
-zero
-erratic-random
-driftingup
-driftingdown
A
B
C
D
E
ECHOLOSS prompt-flashing F
CalibrationNon-Linear H
SYMPTOMS
FAULTS SOLUTIONS
Unit“See’s”WrongTargetDueTo:
A -sensorcovernotremoved -removeprotectivecoverafterinstallation
A,C,D,F -sensornotaimedcorrectly
A,D,F -dust/dirtbuilduponsensor -cleancarefully(donotscratchsensorface)
A,D,F -condensationonsensor -lowersensor
-insulatesensormountinglocation
-increase MinRg (CALIBRATION menu)by
1-3”/2.5-7.5cm
-wipesensorfaceandbodywithRain-X
A,D -sensormountingstandpipe
-toolong/-toonarrow
-dirty/-gasketintruding
-lowerSensorbelowstandpipeintrusion
C,E -veryturbulentflowinopenchannel -increase RejTime (CALIBRATION menu)
-installstillingwellonflumeorweir
C,E -veryturbulentlevelintank -increase RejTime (CALIBRATION menu)
-changetankfillmethod
UnitPicks-UpInterferenceDueTo:
A,C -noisefromhighpressurefill -installsubmergedfillpipe
A,D -sensorcouplingovertightened -handtightenonly(likealightbulb)
A,D -sensorcouplingnotused -usecouplingsupplied
C -otherultrasonicunitinclose
proximity
-synchronize
Electricalinterference:
C -sensorcableconnectionsreversed
C -throughsensorcable -useproperly grounded metalconduit
C -sensorcableextendedandjunction
notinsulated
-usemetalJunctionBox
C -throughenclosure -usemetalenclosure
SLT32Level&FlowMonitor
ManualSeriesB.11
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