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Deltabar S PMD70 - 96 Pages

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Deltabar S PMD70

Catalog excerpts

Level Pressure Flow Temperature Liquid Registration Systems Services Solutions Analysis Components Technical Information Differential pressure measurement Differential pressure transmitter with ceramic and silicon sensors Overload-resistant and function-monitored; Communication via HART, PROFIBUS PA or FOUNDATION Fieldbus The Deltabar S differential pressure transmitter is used for the following measuring tasks: ■ Flow measurement (volume or mass flow) in conjunction with primary devices in gases, vapors and ■ Level, volume or mass measurement in liquids ■ Differential pressure monitoring, e.g. of filters and ■ International usage thanks to a wide range of approvals Your benefits ■ Very good reproducibility and long-term stability ■ High reference accuracy: up to +0.075 %, ■ Turn down up to 100:1, higher on request ■ Used for flow and differential pressure monitoring ■ HistoROM®/M-DAT memory module ■ Function-monitored from the measuring cell to the ■ Continuous modularity for differential pressure, hydrostatics and pressure (Deltabar S, Deltapilot S, - replaceable display - universal electronics ■ Quick commissioning with Quick Setup menu ■ Extensive diagnostic functions People for Process Automation

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Deltabar S Table of contents Function and system design. . . . . . . . . . . . . . . . . . . . . 4 Device selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Measuring principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Flow measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Level measurement (level, volume and mass) . . . . . . . . . . . . . . . . 7 Communication protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Warm-up period – PMD70, FMD76 . . . . . . . . . . . . ....

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Deltabar S high-pressure side (continued) . . . . . . . . . . . . . . . . . . . . . . . . . . Process connections FMD77 with diaphragm seal, high-pressure side (continued) . . . . . . . . . . . . . . . . . . . . . . . . . . FMD78 basic device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Process connections FMD78 with diaphragm seal . . . . . . . . . . . . Process connections FMD78 with diaphragm seal (continued) . . Process connections FMD78 with diaphragm seal (continued) . . Process connections FMD78 with diaphragm seal (continued) . . Process connections FMD78 with...

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Deltabar S Function and system design Device selection Deltabar S – product family PMD70 PMD75 FMD76 FMD77 FMD78 + – + – P01-PMD70xxx-16-xx-xx-xx-000 P01-PMD75xxx-16-xx-xx-xx-000 P01-FMD76xxx-16-xx-xx-xx-000 P01-FMD77xxx-16-xx-xx-xx-000 P01-FMD78xxx-16-xx-xx-xx-003 With ceramic process isolating diaphragms With metal process isolating diaphragms With ceramic process isolating diaphragms With metal process isolating diaphragms and diaphragm seal mounted on one side With metal process isolating diaphragms and capillary diaphragm seals Field of application – Flow – Level – Differential...

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1) OPL: over pressure limit; dependent on the lowest-rated element, with regard to pressure, of the selected components 2) Lower temperatures on request Measuring principle Ceramic process isolating diaphragm used for Metal process isolating diaphragm used for PMD75, FMD77 and FMD78 Ceramic measuring cell PMD70 and FMD76 2 Process isolating diaphragm 4 Glass frit fixes the process isolating diaphragm onto the meter body Metal measuring cell 10 mbar (0.15psi) and 30 mbar Metal measuring cell as of 100 mbarfl.5 psi) 3 Process isolating diaphragm 9 Process isolating diaphragm Ceramic process...

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Deltabar S Advantages: • Standard system pressures: 160 bar (2400 psi) and 420 bar (6300 psi) • High long-term stability • Very high single-sided overload resistance • Secondary containment for enhanced integrity Flow measurement Design and operation mode + Q ~ Δp p1 + – p2 Q Q ~ Δp p1 – p2 Q P01-PMD7xxxx-15-xx-xx-xx-000 Flow measurement with Deltabar S and primary device, left: orifice plate and right: Pitot tube Q Δp Flow Differential pressure, Δp = p1 – p2 Your benefits • Choice of four flow modes of operation: volume flow, corrected volume flow (European norm conditions), standard...

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Deltabar S Level measurement (level, volume and mass) Design and operation mode – – ➀ h ➁ + Δp h= ρ g ➂ + P01xMD7xxxx-15-xx-xx-xx-000 Level measurement with Deltabar S 1 2 3 h Δp ρ g Level measurement via pressure piping and PMD70 Level measurement with FMD76 Level measurement with FMD78 Height (level) Differential pressure Density of the media Gravitation constant Your benefits • • • • • Communication protocol Endress+Hauser Choice of three level operating modes. Volume and mass measurements in any tank shapes by means of a freely programmable characteristic curve. Choice of diverse level...

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Measured variable Differential pressure, from which flow (volume flow or mass flow) and level (level, volume or mass) are derived Measuring range PMD75, FMD77, FMD78 (with metal process isolating diaphragms) PMD70, FMD76 (with ceramic process isolating diaphragms) 1) The MWP (maximum working pressure; MWP = PN) for the measuring device depends on the lowest-rated element, with regard to pressure, of the selected components, i.e. the process connection (-> 1 31 ff) has to be taken into consideration in addition to the measuring cell (-> see Table above). Also observe pressure-temperature...

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Deltabar S Explanation of terms Explanation of the terms "turn down (TD)", "set span" and "zero-based span" Case 1: • ⏐Lower range value (LRV)⏐ ≤ ⏐Upper range value (URV)⏐ Example: • Lower range value (LRV) = 0 mbar • Upper range value (URV) = 100 mbar (1.5 psi) • Nominal value (URL) = 500 mbar (7.5 psi) ➀=➁ LRL LRV URV URL –500 mbar 0 100 +500 mbar ➂ Turn down: • TD = URL / ⏐URV⏐ = 5:1 ➃ Set span: • URV – LRV = 100 mbar (1.5 psi) This span is based on the zero point. ➄ P01-xxxxxxxx-05-xx-xx-xx-001 Example: 500 mbar (7.5 psi) measuring cell Case 2: • ⏐Lower range value (LRV)⏐ ≥ ⏐Upper range...

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