Siemens FX300 manual Replacing signal converter / LCD display, Following steps are to be performed

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		SERVICE 7
	SITRANS FX300	SERVICE 7

7.1 Replacing signal converter / LCD display

The signal converter has to be replaced by a converter of the same type. The following parameters have to be observed for it:

•The item number must match: 2.143670.xxx

•The software version 2 must match.

•The basic version has no software identification

•The gas version is marked: "gas"

•The steam version is marked: "steam"

Figure 7-1: Board, example

1Connector for display

2Version number, software identification

3Connector for measuring sensor

4Spacer pins

5Fixing screw (Phillips)

The following steps are to be performed:

•Switch off the power supply.

•Unscrew the front cover.

•Detach the display from the spacer pins.

•Detach the display cable 1.

•Detach the measuring sensor cable 3.

•Loosen the three fixing screws 5 (Phillips).

•Pull out signal converter.

•Insert new signal converter.

•Tighten the three screws.

•Attach measuring sensor cable 3 (Caution: ensure that the measuring sensor cables are not on top of the spacer pins 4 May be damaged).

•Attach display cable 1.

•Attach display in desired position, apply even pressure to the entire surface.

•Screw on cover by hand.

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

www.siemens.com/flow

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Contents Page Imprint Contents Contents Technical data Devices are rated for the following flow velocities Safety InstructionsIntended use Devices are particularly suitable for the measurementCE marking CertificationsSafety instructions from the manufacturer Copyright and data protectionDisclaimer Information concerning the documentation Product liability and warrantySafety warnings are indicated by the following symbols Safety instructions for the operatorFollowing designs are available as options Scope of deliveryInstrument versions Devices come in the following versionsSandwich 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 installationPipelines with control valve Preferred mounting positionPreferred 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-UP StartStart-up and control Display and operating elements OperationFunctional description of the keys Switch from measuring mode to menu modeOperation Operating principlesNavigation within the menu structure Changing the settings in the menuChanging units Example Measures in the event of faulty indicationsTotalizer / pulse output Max. pulses per hourVolume Standard volume Mass Liquids, steams, gases Air Gas Overview of the most important functions and unitsLevel 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 Menu item Tests Level Designation Selection / entry ExplanationTest 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 displayReturning the device to the manufacturer ServiceAvailability of services Spare parts availabilityForm for copying to accompany a returned device Functional principle Technical DataTechnical data Measuring systemMeasuring accuracy Installation conditions Operating conditionsMaterials Process connections Electrical connectionsApprovals and certifications Dimensions and weights Flange versionsFlange version EN Technical Data NPS Flange version Asme B16.5Sandwich version EN Size Pressure Dimensions inches Weight lbs Rating Sandwich version AsmeWith Without Pressure sensor Air Flow tablesMeasuring ranges WaterFlow rate limits Product Nominal sizes Minimum flow rates Maximum flow ratesFt/s 1092-1 Measuring range saturated steam 1...7 barMeasuring range saturated steam 10.5...20 bar Kg/hMeasuring range saturated steam 15...100 psig Measuring range saturated steam 150...300 psigLbs/h Sitrans FX300