Measuring Gas Velocity with the D-FL 100 Differential Pressure Bar

D−FL 100 Seite 319.3. Selecting the differential pressure bar materialThe standard material of the differential pressure bar is stainless steel. Special applications with criticalgases may require a differential pressure bar made of a different material. The following table gives arough overview of application ranges of different materials. Other materials can be provided only uponrequest.MaterialCrNiMoTi 17 12 2(standard material)Area of application1.4571 Moderately corrosive environmentNiMo16Cr15WHastelloyC-2762.4819Durable, withstands various chemicalsChemical and petrochemical industriesCurrent plants and waste incinerators running onfossil fuels, as well as smoke gas desulphurizationplantsProduction of organic acidsNiCr15Fe Inconel 6022.4816Can be used up to 850°C (from 600°C)KilnsCatalytic generators in petrochemical processes9.4. Selecting the Type of InstallationDifferential pressure bars are available in various installation designs. They can be delivered with orwithout counter bearings. Use of a counter bearing is recommended for stacks with large innerdiameters and also if unusually large forces in the gas could affect the differential pressure bar andcause resonance. The counter bearing is therefore a standard option for the differential pressure bar.The differential pressure transducer can also be connected directly to the differential pressure bar with aswitching valve and an adapter. If lack of space or other factors make this configuration impossible, adifferential pressure bar with a flange for connecting to a pressure line is available. It, in turn, willconnect the transducer/switching valve to the differential pressure bar (standard).GmbH