Emerson Micro Motion 9739 MVD

Configureprocessmeasurement
Result:
•Underconditionsofzeroow,themAoutputis12mA.
•Underconditionsofforwardow,forowratesbetween0and+100g/s,themAoutputvaries
between12mAand20mAinproportionto(theabsolutevalueof)theowrate.
•Underconditionsofforwardow,if(theabsolutevalueof)theowrateequalsorexceeds100g/s,
themAoutputisproportionaltotheowrateupto20.5mA,andwillbelevelat20.5mAathigher
owrates.
•Underconditionsofreverseow,forowratesbetween0and−100g/s,themAoutputvaries
between4mAand12mAininverseproportiontotheabsolutevalueoftheowrate.
•Underconditionsofreverseow,iftheabsolutevalueoftheowrateequalsorexceeds100
g/s,themAoutputisinverselyproportionaltotheowratedownto3.8mA,andwillbelevelat
3.8mAathigherabsolutevalues.
tExample:FlowDirection=Reverse
Conguration:
•FlowDirection=Reverse
•LowerRangeValue=0g/s
•UpperRangeValue=100g/s
Result:
•Underconditionsofforwardoworzeroow,themAoutputis4mA.
•Underconditionsofreverseow,forowratesbetween0and−100g/s,themAoutputlevelvaries
between4mAand20mAinproportiontotheabsolutevalueoftheowrate.
•Underconditionsofreverseow,iftheabsolutevalueoftheowrateequalsorexceeds100g/s,
themAoutputwillbeproportionaltotheabsolutevalueoftheowrateupto20.5mA,andwill
belevelat20.5mAathigherabsolutevalues.
FlowDirectionandfrequencyoutputs
FrequencyoutputsareaffectedbyFlowDirectiononlyifFrequencyOutputProcessVariableissettoaow
variable.FrequencyoutputlevelsfordifferentcombinationsofFlowDirectionandactualowdirection
areshowninT able5-5.
Table5-5EffectoftheFlowDirectionparameterandactualflowdirectiononfrequencyoutputs
Actualflowdirection
FlowDirectionsettingForwardZeroflowReverse
ForwardHz>00Hz0Hz
Reverse0Hz0HzHz>0
BidirectionalHz>00HzHz>0
AbsoluteValueHz>00HzHz>0
NegateForwardZero
(1)
0HzHz>0
NegateBidirectionalHz>00HzHz>0
(1)Refertothedigitalcommunicationsstatusbitsforanindicationofwhetherowispositiveornegative.
82MicroMotion9739MVDTransmitters