User Guide

3.Whenthesensorispluggedin,thevalueinAnalogIn
shouldbecloseto40.
4.Youcanadjusttheinputsensitivitybymovingthe
sliderpointer.
5.ClickontheSensorsbuttontobringuptheAdvanced
SensorForm.
1.IntheSensorboxoftheinputyouattachedthesensor
to,selectthe1138DifferentialGasPressureSensor
fromthedropdownmenu.
2.Thisisthepressuredifferentialbetweenthesensor
ports,measuredinPascalsandpoundspersquare
inch.
3.FormulausedtoconverttheanaloginputSensorValue
into.
TestingUsingMacOSX
1.GototheQuickDownloadssectionontheMacOSXpage
2.DownloadandrunthePhidgetOSXInstaller
3.ClickonSystemPreferences>>Phidgets(underOther)toactivatethePreferencePane
4.Makesurethattheisproperlyattached.
5.DoubleClickoninthePhidgetPreferencePanetobringuptheSampleprogram.Thisprogramwillfunctioninasimilar
wayastheWindowsversion.
UsingLinux
ForastepbystepguideongettingPhidgetsrunningonLinux,checktheLinuxpage.
UsingWindowsMobile/CE5.0/CE6.0
ForastepbystepguideongettingPhidgetsrunningonWindowsCE,checktheWindowsCEpage.
TechnicalDetails
TheDifferentialGasPressureSensorusesbipolarprocessingtoprovideanaccurate,highlevelanaloginputsignalthatis
proportionaltotheappliedpressure.Whenthesensorispluggedin,theSensorValueshoulddefaulttoabout40,which
correspondsto0kPabetweenthetwoports.
Ports
Thesensorcomeswithapositivetopportandanegativebottomport.Theseportshaveadiameterof2.79mmto3.30mm
(nominal3mm).
Takecautionwhenconnectingthepressureportsthissensoronlymeasuresapositivepressuredifferential,andyoucould
damagethesensorifyouconnectitinreverse.Ensurethattheupperportisalwaysatanequalorhigherpressurethanthe
lowerport.