Vortex Flow Sensor VA40 ZG8 Ex-d - U3460 pages
Vortex Flow Sensor VA40 ZG8 Ex-d
nnnn^ hontzsch
nnnnflow measuring technology
nnnnVortex probe VA for flow measurement of gases with integrated,
nnnnconfigurable transducer UVA in Ex-d housing
nnnnProbe VA40 ZG8 as an example with flange guide piece SFB
nnnnMeasurable variables
nnnnactual flow velocity v [m/s]
nnnnactual flow rate [m3/h] in
nnnnconversion to standard
nnnnvelocity/standard volume flow
nnnnby entering working pressure
nnnnand temperature parameters
nnnnMedium
nnnnprimarily single-phase gas
nnnnmixtures with air, nitrogen,
nnnnoxygen, methane, natural gas,
nnnnammonia, argon, carbon
nnnnmonoxide, superheated steam ..
nnnnas dominant components,
nnnnbiogas.
nnnnOther gases or gas mixtures on
nnnnrequest.
nnnnDrawing 8
nnnnprobe guide
nnnnpiece SF
nnnn-ca.205-
nnnnProbe, as an example, with screw
nnnnthread probe guide piece SFB
nnnnMeasuring range
nnnn0.5 ... 40 m/s
nnnnFunctional principle
nnnnvortex meter for measuring
nnnnflow velocity, flow rate and
nnnnvolume
nnnnultrasonic measuring of the
nnnnvortex shedding
nnnnKármán vortex street
nnnnDesign
nnnninsertion probe with probe guide
nnnnpiece and Ex-d housing
nnnnAdvantages
nnnncompact measuring instrument
nnnnwith optional on-site display in
nnnnEx-application
nnnnapplication in category 1 (zones
nnnn0 and 20), transducer housing
nnnnapproved for category 2 (zones
nnnn1 and 21)
nnnnno external isolation/supply unit
nnnnnecessary
nnnnminimal reaction time (0.5 m/s)
nnnnhigh measuring dynamics (1:80)
nnnnsteady long-term measuring
nnnnno moving parts
nnnneasy to clean
nnnnhigh fatigue strength
nnnncorrosion resistant
nnnnoperates to a large extent
nnnnirrespective of gas composition
nnnnminor pressure drop
nnnneasy configuration via HART6-
nnnninterface
nnnnExamples of application
nnnnflow measurement in Ex-
nnnnapplication, for example, of air,
nnnnoutgoing air, sludge activation air,
nnnnengine intake air, natural gas,
nnnnexhaust gas, process gas, biogas,
nnnnmotor car exhaust, torch gas,
nnnnwater vapour
nnnnParticles, humidty and
nnnncondensation
nnnncharges in the gas caused by
nnnnparticles such as dust and
nnnnfibres do not affect
nnnnmeasurement, as long as
nnnnabrasion and agglomeration do
nnnnnot occur on the sensor
nnnnrelative gas humidity of less
nnnnthan 100 % and slight
nnnncondensation on the sensor do
nnnnnot affect the measurement
nnnnuncertainty
nnnnU346_VAZG8Exd_DoP_e_120417 http://www.hoentzsch.com
nnnn1/8
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