Honeywell HON R100NG Series - Meter run characteristics

Basicsforinstallingthedeviceinapipe
UsermanualforHONR100gaspressureregulatorwithHONP095NGpilot  27
No. Meaning
11 Ventline
12 Reliefline
13 Blowdownline
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Followingisthemeaningoftheacronyms:
Acr. Meaning
DN Nominalsizeofpipe
L
uR
 Undisturbedlengthofpipe
*Shut‐offdevicewithundisturbedflowpattern(ballvalve)canbeincorporated
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4.2 Meterruncharacteristics
Thefollowingrecommendationsarebasedonthemeasuringlineconnectionconditionsset
forthinstandards(DIN) EN 334and(DIN) EN 14382.Thecompanyoperatingthesystemis
thesolepartyresponsibleforthemeterrunworkingproperly.
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 Apipeareawithasteadyflowpatternmustbeselectedforthesensingpoint.There
mustnotbeanycomponentsthatdisturbtheflowdirectlyupstreamanddownstream
ofthesensingpoint,e.g.,orificeplates,expanders,bends,junctions,shut‐offdevices,
etc.
 Theflowrateatthesensingpointshouldnotexceedapprox. 25 m/s,dependingonthe
systemconditions.
 Inthecaseofspecificsystemcircuits(suchas gasregulatinglinesforgasengines)andin
thecaseofgasburners,flowrateshigherthan25 m/smaybeallowedfollowingcon‐
sultationwiththemanufacturer.
 Withinalow‐pressurerangeofuptoapprox. 250 mbar,amaximumflowrate
of approx. 15 to 20 m/sisrecommendedatthesensingpoint.Onacase‐by‐casebasis,
andfollowingconsultationwiththemanufacturer,evenlowerflowratesmaybeal‐
lowed.
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Standardsusedasabasis
Conditionsforthemeter
run