Campbell-scientific CR1000 Measurement and Control System Manuale Utente Scaricare il pdf (Pagina 469)

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101

Section 11. Glossary

469

terminalemulatorisavailableinmostdataloggersupportsoftware

availablefromCampbellScientific.

thermistor

Athermistorisaresistiveelementwhosechangeinresistancewith

temperatureiswide,stable,andwell‐characterized.Itcanbeusedasa

devicetomeasuretemperature.Theoutputofathermistorisusually

non‐linear,someasurementrequireslinearization,usuallybymeansof

theSteinhart‐Hartoranotherpoly

nomialequation.CampbellScientific

thermistors,models107,108,and109,arelinearizedbySteinhart‐Hart

asimplementedintheTherm107(),Therm108(),andTherm109()

instructions.

throughput

Thethroughputrateistherateatwhichameasurementcanbetaken,

scaledtoengineeringunits,andthereadingstoredinadatatable.The

CR1000hastheabilitytoscansensorsatarateexceedingthe

throughputrate.Theprimaryfactoraffectingthroughputrateisthe

amountofprocessingsp

ecifiedbytheuser.Insequential‐mode

operation,allprocessingcalledforbyaninstructionmustbecompleted

beforemovingontothenextinstruction.

TTL

Transistor‐transistorlogic.Aserialprotocolusing0Vdcand5Vdcas

logicsignallevels.

TLS

Transportlayersecurity.AnInternetcommunicationssecurityprotocol.

toggle

Toreversethecurrentpowerstate.

UINT2

Datatypeusedforefficientstorageoftotalizedpulsecounts,port

status(statusof16portsstoredinonevariable,forexample)orinteger

valuesthatstorebinaryflags.

UPS

Uninterrubtablepowersupply.AUPScanbeconstructedformost

dataloggerapplicationsusingaclinepower,anac/acorac/dcwall

adapter,achargecontroller,andarechargeablebattery.

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Campbell-scientific CR1000 Measurement and Control System Manuale Utente Pagina 469

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