
BRONKHORST HIGH-TECH B.V.
5 Troubleshooting and service
5.1 General
Foracorrectanalysisoftheproperoperationofaflow/pressuremeterorcontrolleritisrecommendedtoremovethe
unitfromtheprocesslineandcheckitwithoutapplyingfluidsupplypressure.Incasetheunitisdirty,thiscanbe
ascertainedimmediatelybylooseningthecompressiontypecouplingsand, ifapplicabletheflangeontheinletside.
Energizingorde‐energizingoftheinstrumentindicateswhetherthereisanelectronicfailure.Afterthat,fluidpressure
istobeappliedinordertocheckbehaviour.Ifthereshouldbesuspicionofleakageincaseofagasunit,donotcheck
forbubbleswithaleakdetectionliquidunderthecoverasthismayleadtoashort‐circuitinthesensororp.c.board.
5.2 LED indication
TheredLEDontheinstrumentgiveserrororwarninginformation.
RedLED Time Indication
Off Continuously Noerror
Flash Variable BusactivityontheModbusinterface
On Continuously Criticalerrormessage
Aseriouserroroccurredintheinstrument
Instrumentneedsservicebeforefurtherusing
Formoreinformationchecktheinstructionmanualsfordigitalcommunication/interfacesat
http://www.bronkhorst.com/en/downloads/instruction_manuals/
9.17.057 page 23
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