Instruction Manual

8of16 MN204260 RevA
UNDERSTANDINGPODVIEW® StepSix
Linearvs.Non‐Linear:Twooftheshapes(VerticalCylinderTankandRectangularTank)willalwaysprovidea
linearoutput, regardlessof selectingDistanceorVolume.Theremainingfourshapes (VerticalCylinderTank
withConeBottom,HorizontalCylinderTankwithEndCaps,HorizontalCylinderTankwithSphericalEndCaps
andSphericalTank)willhavealinearoutputwhenDistanceisselected,butwillhaveanon‐linearoutputwhen
volumeisselected.
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VerticalCylindricalTank
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In the above illustration, 10” of liquid will always
beequalto100gallonsofliquid(1”=10gallons).
HorizontalCylinderTankwithEnd
Caps
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In the above illustration, 1” of li quid  does not
equal 10 gallons.The 10” at the bottom
representsariseof62.8gallonswherethechange
between 10” and 20” represents an increase of
109.6gallons.
Whenvolumeisselected,the4‐20mAoutputfromthesensorwillbeproportionaltothevolumeofthetank,
nottheheightofthetank.Thismeansthatthecurrentoutputwilltrackthevolumeofthetank(ingallonsor
liters) within a non‐linear tank (Vertical Cylinder
 Tank with Cone Bottom, Horizontal Cylinder Tank with End
Caps,HorizontalCylinderTankwithSphericalEndCapsorSphericalTank).
Whenconnectingthe4‐20mAoutputtoadisplay,thecurrentsignalwillfollowthevolumeofthetank.The
displaywillalsoreflectthevolumeofthetank
andnottheheightoftheliquid.
Example#1(VolumeOutput):Intheillustrationsabove,@20”ofliquid,thedisplaywillshow200.0gallonsin
theVertical Cylindrical Tank.However,in theHorizontalCylinder TankwithEnd Caps, the same level of 20”
wouldshow172.4gallons.
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