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PT0E‑0730

 12

３−６

．Operationalprocedure

 Approachthesamplinghosetothesamplingsiteformeasurementandleavesamplinggas

sucked.



 ・Takecarethatanytwistonthesamplinghosecannotbemade.

 ・Stopsamplinghoseatthepointofmeasurement.

 ・Fromthehoselengthconsiderthedelaytimeandreadoutthereadingafterthereading

getsstable.



Danger

・Oxygendepletionairetcmaybeexhaustedfromgasoutlet.Donotbreatheinthere

absolutely.

・Highdensitygasover(LEL)maybeexhausted.Donotapproachfirethereabsolutely.

Caution

・Whensuckaircontaininggas,doitafterremovingwatervapours.

・Whensuckhightempgas,doitafterbeingusedtobeambienttemp.

・Donothavewaterandoilsuckedwrongly,theinternalpumpandsensormaybetroubled.

・Whenmeasure,checktheroaringsoundofpumpandflowmonitor.

Itisimpossibletomeasureatpumpworkstop.

・Donotblockthepumpoutlet,thereadingshallshowalittlehigher.

・Whenmeasureoxygenininertgasforalongtime,besuretomeasurelowerthan15%CO2

byallmeans.Whenexeedhigherdensitythan15%,shortenthetimeforthismeasurement

aslifeofoxygensensormaybeshortend.

Warning

・Intheplacewhereenvironmenttempisremarkablychanged,theremaybethecasethat

accurate oxygen measurement is impossible by temperature change. Wait until the

instrumentmaybeusedtotheambienttemp(About10min)andstartmeasurementafter

havingmadezerocalibrationagain.

・Donotuseforafterpurposethenthemeasurementofcombustiblegas,vaporandtoxic

 gasmixchares.

＊Note

WhenmeasurethehighdensitygasthanLEL,thehung‑upphenomenon.

① WhenmeasureHCbyvol%,domeasureitasitis.

② Whenmakezeroadjustment,removethesamplingbaseandsupplyfreshairsuckedinto

instrument.

③ Whenmeasureby%LEL,makeaircleaningofsamplinghoseandstarttomeasureafter

readinggoesdowntozero.

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RKI Instruments RIKEN RX-516 User Manual

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