Siemens FX300 manual Device description, Free air delivery measurement FAD optional

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		DEVICE DESCRIPTION 2
	SITRANS FX300	DEVICE DESCRIPTION 2

2.2.3 Device description

Figure 2-4: Device description

1Signal converter

2Cable feedthrough grey, standard version

3Pressure sensor, optional

4Shut-off valve, optional

5Measuring sensor

6Centering ring

2.2.4Free air delivery measurement - FAD (optional)

A (air) compressor draws air from the ambient atmosphere, compresses it and delivers it at the required pressure. Since the ambient atmosphere also contains water vapour, what the compressor draws in is a mixture of air and water vapour. Free air delivery measurement is to be understood under this condition. Most manufacturers specify free air delivery only at standard intake conditions. What the user ultimately requires as process air must first be determined before measuring can take place with an accuracy of ±1%.

The vortex flowmeter with the optional FAD function can measure the free air delivery online, humidity and speed compensated, regardless of its function as standard flowmeter. The integrated software evaluates the free air delivery automatically online.

The menu-driven, user-friendly software prompts the operator to enter the pressure, relative humidity, the required as well as current discharge pressure.

The steam tables and compressibility tables are saved as standard. The measuring device is optionally available with a pressure sensor which measures the discharge pressure online, making manual input of the values unnecessary.

06/2009 - SFIDK.PS.050.F2.02 A5E02100423

www.siemens.com/flow

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Contents Page Imprint Contents Contents Technical data Intended use Safety InstructionsDevices are particularly suitable for the measurement Devices are rated for the following flow velocitiesCE marking CertificationsCopyright and data protection Safety instructions from the manufacturerDisclaimer Information concerning the documentation Product liability and warrantySafety warnings are indicated by the following symbols Safety instructions for the operatorInstrument versions Scope of deliveryDevices come in the following versions Following designs are available as optionsSandwich version Devices with connection flangeFree air delivery measurement FAD optional Gross heat meter Dual seal Nameplate Transport StorageInstallation condtitions InstallationMeasurement of liquids Prohibited installationRecommended installations for measurement of liquids Measurement of vapours and gases Prohibited installationPreferred mounting position Pipelines with control valvePreferred mounting position Allen screws on connection housing Turning the connection housingTurn the display as follows Turning the displayHeat insulation Minimum inlet runs Inlet and outlet runsFlow straightener Minimum outlet runsGeneral installation notes InstallationInstalling devices in flange design Installing devices in sandwich design Electrical Connections Safety instructionsElectrical Connections Following procedures are to be performedMaximum load resistance is calculated as follows Electrical connection of current and pulse outputTotalizer / pulse output Power supplyMaximum frequency of the pulse output is fmax = 0.5 Hz Electrical ConnectionsGrounding connections Therefore it is essential to observe the following points Protection categoryStart START-UPStart-up and control Display and operating elements OperationOperation Switch from measuring mode to menu modeOperating principles Functional description of the keysNavigation within the menu structure Changing the settings in the menuChanging units Totalizer / pulse output Measures in the event of faulty indicationsMax. pulses per hour ExampleOverview of the most important functions and units Volume Standard volume Mass Liquids, steams, gases Air GasLevel Designation Explanation Temp Absolute Power Energy Density Pressure Over Volume Standard volume Mass Liquids, steams, gases GasError message Cause Measure Error messagesOverview of firmware versions Menu structureCharacter selection in change mode Entering values in change modeMenu item Quick Setup Level Designation Selection / entry Explanation Menu item TestsTest current is maintained until the menu has been exited Menu item Setup firmware version basic Hart SV Operation Menu item Setup firmware version steam Reset heat energy Hart tertiary variable Temp. ↑ Pressure ↑ Density Operation Menu item Setup firmware version gas Hart SV RPM Pressure, temperature and density Operation Following steps are to be performed Replacing signal converter / LCD displayAvailability of services ServiceSpare parts availability Returning the device to the manufacturerForm for copying to accompany a returned device Functional principle Technical DataMeasuring system Technical dataMeasuring accuracy Operating conditions Installation conditionsMaterials Electrical connections Process connectionsApprovals and certifications Flange versions Dimensions and weightsFlange version EN Technical Data NPS Flange version Asme B16.5Sandwich version EN Sandwich version Asme Size Pressure Dimensions inches Weight lbs RatingWith Without Pressure sensor Measuring ranges Flow tablesWater AirProduct Nominal sizes Minimum flow rates Maximum flow rates Flow rate limitsFt/s Measuring range saturated steam 10.5...20 bar Measuring range saturated steam 1...7 barKg/h 1092-1Measuring range saturated steam 150...300 psig Measuring range saturated steam 15...100 psigLbs/h Sitrans FX300