Vortex Flow Sensor VA40 ZG8 Ex-d - U3460 pages

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Vortex Flow Sensor VA40 ZG8 Ex-d

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^ hontzsch

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flow measuring technology

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Vortex probe VA for flow measurement of gases with integrated,

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configurable transducer UVA in Ex-d housing

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Probe VA40 ZG8 as an example with flange guide piece SFB

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Measurable variables

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actual flow velocity v [m/s]

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actual flow rate [m3/h] in

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conversion to standard

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velocity/standard volume flow

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by entering working pressure

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and temperature parameters

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Medium

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primarily single-phase gas

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mixtures with air, nitrogen,

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oxygen, methane, natural gas,

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ammonia, argon, carbon

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monoxide, superheated steam ..

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as dominant components,

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biogas.

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Other gases or gas mixtures on

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request.

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Drawing 8

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probe guide

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piece SF

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-ca.205-

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Probe, as an example, with screw

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thread probe guide piece SFB

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Measuring range

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0.5 ... 40 m/s

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Functional principle

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vortex meter for measuring

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flow velocity, flow rate and

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volume

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ultrasonic measuring of the

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vortex shedding

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Kármán vortex street

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Design

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insertion probe with probe guide

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piece and Ex-d housing

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Advantages

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compact measuring instrument

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with optional on-site display in

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Ex-application

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application in category 1 (zones

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0 and 20), transducer housing

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approved for category 2 (zones

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1 and 21)

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no external isolation/supply unit

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necessary

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minimal reaction time (0.5 m/s)

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high measuring dynamics (1:80)

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steady long-term measuring

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no moving parts

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easy to clean

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high fatigue strength

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corrosion resistant

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operates to a large extent

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irrespective of gas composition

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minor pressure drop

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easy configuration via HART6-

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interface

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Examples of application

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flow measurement in Ex-

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application, for example, of air,

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outgoing air, sludge activation air,

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engine intake air, natural gas,

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exhaust gas, process gas, biogas,

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motor car exhaust, torch gas,

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water vapour

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Particles, humidty and

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condensation

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charges in the gas caused by

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particles such as dust and

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fibres do not affect

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measurement, as long as

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abrasion and agglomeration do

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not occur on the sensor

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relative gas humidity of less

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than 100 % and slight

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condensation on the sensor do

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not affect the measurement

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uncertainty

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U346_VAZG8Exd_DoP_e_120417 http://www.hoentzsch.com

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