YOKOGAWA ADMAG TI Series

<5. Functions>
82
IM 01E21A02-03EN
5.5 Auxiliary Calculation Function
5.5.1 Fluid Flow Direction Setting
Thearrowindicatedonthesurfaceofthesensorindicatesauidowdirection.Atshipmentfrom
themanufacturingfactory,aowrateismeasuredassumingthatthearrowdirectionisforward.
Bychangingtheparametersettings,thisproductcanmeasuretheowrate,assumingthatthe
reverse direction is forward against the arrow direction.
Thesettingcanbeconguredwiththefollowingparameter.
Menu path
Display Devicesetup►Detailedsetup►AUXcalculation►(seebelow)
F
OUNDATION
Fieldbus
DeviceConguration►STB►DeviceConguration►Conguration►AUXCalculation
►(seebelow)
Block
Name
Relative
Index
Parameter
Description
Display F
OUNDATION Fieldbus
STB 88 Flow direct Flow Direction
Speciestheuidow
direction.
Fromthetablebelow,selecttheuidowdirection.
Selection
Description
Display
F
OUNDATION
Fieldbus
Forward Forward The arrow direction of the sensor is forward.
Reverse Reverse The reverse direction of the arrow of the sensor is forward.
5.5.2 Rate Limit Function Setting
If the rate limit function is used, it becomes possible to reduce noises that cannot be all cleared
only by lengthening the damping time constant. When a step signal or a sudden signal due to a
slurryuidisinput,thisfunctionjudgeswhetherthesignalisaowratesignaloranoisesignal.
Thisjudgmentismadebasedonthehigh/lowlimitvalue(ratelimitvalue)andtheratelimit
functioncontinuationtime(deadtime),causingthenoisesignalovertheratelimitvaluetobecut
o󰀨.
Theratelimitvalueshouldbespeciedwiththepercentage(%)forthespanoftheprocessvalue
PV-mappedinSubsection5.1.2.Iftheratelimitfunctionisnotused,set“0”tothedeadtime.
Thesettingcanbeconguredwiththefollowingparameters.
Menu path
Display Devicesetup►Detailedsetup►AUXcalculation►(seebelow)
F
OUNDATION
Fieldbus
DeviceConguration►STB►DeviceConguration►Conguration►AUXCalculation
►(seebelow)
Block
Name
Relative
Index
Parameter
Description
Display F
OUNDATION Fieldbus
STB 89 Rate limit Rate Limit Speciestheratelimitvalue.
STB 90 Dead time Dead Time Speciesthedeadtime.
STB 91 Noiselter Noise Filter
Speciesthenoiselter(rate
limitvalueanddeadtime).
*1