Campbell-scientific CR1000 Measurement and Control System Uživatelský manuál stáhnout pdf (Strana 499)

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Appendix A. CRBasic Programming Instructions

499

Round

Roundsavaluetoahigherorlowernumber.

Syntax

variable = Round (Number, Decimal)

SGN

Findsthesignvalueofanumber.

Syntax

x = SGN(source)

Sqr

Returnsthesquarerootofanumber.

Syntax

x = SQR(number)

A.6.8 Integrated Processing

DewPoint

Calculatesdewpointtemperaturefromdrybulbandrelativehumidity.

Syntax

DewPoint(Dest, Temp, RH)

PRT

CalculatestemperaturefromtheresistanceofanRTD.Thisinstructionhasbeen

supersededbyPRTCalc()inmostapplications.

Syntax

PRT(Dest, Reps, Source, Mult)

PRTCalc

CalculatestemperaturefromtheresistanceofanRTDaccordingtoarangeof

alternativestandards,includingIEC.

Syntax

PRTCalc(Dest, Reps, Source, PRTType, Mult, Offset)

SolarPosition

Calculatessolarposition

Syntax

SolarPosition(Dest, Time, UTC_OFFSET, Lat_c, Lon_c, Alt_c,

Pressure, AirTemp)

SatVP

Calculatessaturation‐vaporpressure(kPa)fromtemperature.

Syntax

SatVP(Dest, Temp)

StrainCalc

Convertstheoutputofabridge‐measurementinstructiontomicrostrain.

Syntax

StrainCalc(Dest, Reps, Source, BrZero, BrConfig, GF, v)

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