Kurz B Series User Manual

KurzB‐SeriesOperationsGuide 6–9
Flow Meter Configuration
Assigning a Relay to the Purge Function
Tousethesensorpurgecleaningfeatureofthemeter,relay2mustbeassignedtoPURGE
OUTPUT.RefertoOption8fortheRelayOutputSetupmenuandOption12fortheSensorPurge
Setupmenu.
ThefirstparameterintheSetupSensorPurgemenuturnsthePurgeTimerON
orOFF.Whenset
toON,thesensorpurgecleaningsequenceisinitiatedbyaninternaltimerintheflowmeter.
Note ThePURGETIMERdoesnotneedtobeONforthepurgetobeinitiated
viaModbus,HART,ortheexternalcontactclosure.
Operating and Monitoring Purge Cleaning Using Modbus
Thepurgesequencecanbetriggeredbywritinga1totheModbuscoil#8(function5).This
operationdoesnotrequirethepurgetimertobeON;however,Relay#2mustbeassignedtothe
PURGEOUTfunction.Oncestarted,theModbuspurgeoperationignoresProgrammodepurge
commands.The
Modbuspurgetriggerisindependentoftheinternaltimer.Forexample,ifthe
Programmodepurgeintervalisconfiguredfor60minutes,anyModbuspurgecommandsare
performedwithoutaffectingtheinternaltimerpurgesequence.
ThestatusofthepurgeviaModbusisprovidedatcoilstatus#8,(function2).
Avalueof1
indicatesitisinthemiddleofapurgecycle,anda0indicatesthecycleisidle.
Note Anin‐processpurgesequenceinitiatedthroughHARTtakesprecedence
overapurgesequenceinitiatedthroughModbusandcausesthepurge
sequenceinitiatedthroughModbustobeignored.
Operating and Monitoring Purge Cleaning Using HART
TheparametersforsettingupthepurgesequencecanbechangedthroughtheHARTinterface.
Device‐specificcommands137,138,and139areusedfortheB‐Seriespurgecleaningthroughthe
HARTMaster.TheB‐SeriesFieldDeviceSpecificationdescribestheformatofthesecommands.
ForHARTMastersusingthe
B‐SeriesDeviceDescriptor(DD)files,thePurgeSetupmenuand
purgemethodareavailable.RefertotheHARTInterfaceGuideforinformationabouttheB‐Series
DDmenuorganization.
IfthePurgeTimerhasbeenturnedON,thepurgecycleinitiatedthroughtheHARTinterfacewill
notaff ectthe
purgesequencecontrolledbytheinternaltimer.
Note Anin‐processpurgesequenceinitiatedthroughModbustak e s
precedenceoverapurgesequenceinitiatedthroughHARTandcauses
thepurgesequenceinitiatedthroughHARTtobeignored.

Kurz B Series Specifications

General

Brand	Kurz
Model	B Series
Category	Measuring Instruments
Language	English