Installation manual

SimradPI50
GTemperaturechanges:Thisdigitshowstemperaturechangesrecordedbythesensor.
Thevalueisshowninunitsperminute.Thedirectionofthetemperaturechangeis
shownwiththebluetriangle.Ifthesensordoesnotdetectanytemperaturechanges,
thearrowisremoved.
HHistoryeld:Whenthesizeofthepresentationrectanglepermits,ahistoryeld
isshown.Theeldoffersagraphicalpresentationofthesensorinformationfor
thelast20minutes.Theverticalrangeissetautomaticallydenedbythecurrent
measurements.
PIGeometrysensorview
ThepurposeoftheSimradPIGeometrysensorsystemistomonitorthegeometryof
yourtrawlordanishseine.
Thisisachievedbymakingaccuratemeasurementsofthedistancesbetweenthecentre
oftheheadropeabovethetrawlopening(orthefootropeatthebottom)andeachofthe
trawldoorsorwingends.Ifthesedistancesarenotidenticalthetrawl(ordanishseine)
willbeskewedandunbalanced,andthisreducesthecatchefciency.
ThefollowingPIGeometryversionsexist:
•GeometryFine–Highresolutionicontodetectsmallerchanges
•GeometryCoarse–Lowresolutionicontodetectlargerchanges
•GeometryXT(Extended)Fine–Extendedrange,highresolutionicontodetectsmaller
changes
•GeometryXT(Extended)Coarse–Extendedrange,lowresolutionicontodetect
largerchanges
•GeometryDF(Differential)Fine–differentialmeasurement(singlechannel),high
resolutionicontodetectsmallerchanges
•GeometryDF(Differential)Coarse–differentialmeasurement(singlechannel),low
resolutionicontodetectlargerchanges
TheDF(Differential)GeometrysensorsettingwillonlyuseonechannelonthePIsystem,
butwillnotprovidedextendedrange.
TheCoarseorFinesettingsarenotdenedbythesensorconguration,butinthePI
menusystem.
OnthePI44/54systemsthephrasesSensitiveandCoarseareused.
TheSimradPIGeometrysensorsystemhasbeendevelopedtobeusedonbothbottom
andpelagictrawls,aswellaspairtrawlsanddanishseiners.InadditiontothePI
Geometrysensor,thesystemusestwoPIMini-Rtransponders.Thesearemountedon
thetrawldoors(ortrawlwings).
Note
ThePIGeometryDifferential(DF)sensorversionsareboth“single”sensors.The
otherPIGeometryversionsareall“dual”sensors.Theywillseizetwocommunication
channelsonthePI50.
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